php source code,php example, coding,PHP5,PHP script,Free PHP example,Free PHP Script,Free

How to get unique value form PHP array?

2010-01-23T04:56:00.000-08:00

array_unique()

(PHP 4 >= 4.0.1, PHP 5)

array_unique — Removes duplicate values from an array

Description:

Takes an input array and returns a new array without duplicate values.

Note that keys are preserved. array_unique() sorts the values treated as string at first, then will keep the first key encountered for every value, and ignore all following keys. It does not mean that the key of the first related value from the unsorted array will be kept.

Example:

 /*= array("a" => "1", "2", "3" => "1", "2", "3");
$result = array_unique($input);
print_r($result);
*/

Result:

/*Array
(
  [a] => 1
  [0] => 2
  [2] => 3
)*/

Read CSV file through PHP

2009-07-25T05:31:00.000-07:00

Read CSV file through PHP

/*

$file_handles = fopen("my.csv", "r");

while (!feof($file_handles) ) {

$line_of_texts = fgetcsv($file_handles, 1024);

print $line_of_texts[0] . $line_of_texts[1]. $line_of_texts[2] . "
";

}

fclose($file_handle);

Difference between Cookies and Session (Cookies vs sessions) in PHP

2009-07-11T22:15:00.000-07:00

Cookies and Session (Cookies vs sessions) in PHP

Both are use in terms of data storage in programming language...but how ? what is the preferable?, when use session?, when use cookie?, there are some question which arise in the mind at the time of of store data temp. as well as permanent.

There are differences between the two that will make each favorable in their own circumstance.

Cookies can be set to a long lifespan, which means that data stored in a cookie can be stored for months if not years. Cookies, having their data stored on the client, work smoothly when you have a cluster of web servers, whereas sessions are stored on the server, meaning if one of your web servers handles the first request, the other web servers in your cluster will not have the stored information.

Sessions are stored on the server, which means clients do not have access to the information you store about them – this is particularly important if you store shopping baskets or other information you do not want your visitors to be able to edit by hand by hacking their cookies. Session data, being stored on your server, does not need to be transmitted with each page; clients just need to send an ID and the data is loaded from the local file. Finally, sessions can be any size you want because they are held on your server, whereas many web browsers have a limit on how big cookies can be to stop rogue web sites chewing up gigabytes of data with meaningless cookie information.

So, as you can see, each have their own advantages, but at the end of the day it usually comes down to one choice: do you want your data to work when you visitor comes back the next day? If so, then your only choice is cookies – if you have any particularly sensitive information, your best bet is to store it in a database, then use the cookie to store an ID number to reference the data. If you do not need semi-permanent data, then sessions are generally preferred, as they are a little easier to use, do not require their data to be sent in entirety with each page, and are also cleaned up as soon as your visitor closes their web browser.

PHP Issue Trackers software list

2009-06-26T23:18:00.000-07:00

Mantis

* Web: http://www.mantisbt.org/
* Requirements: PHP 4.3
* Supported databases are MySQL with stated support for Postgress, MSSQL, DB2 and Oracle.
* License: GPL

Eventum

* Web: http://dev.mysql.com/downloads/other/eventum/
* Requirements: PHP 5.1
* Supported databases is MySQL.
* License: GPL

Bugs the Bug genie

* Web: http://www.thebuggenie.com/
* Requirements: PHP 5.1.
* Supported databases is MySQL.
* License: MPL 1.1

WHUPS

* Web: http://www.horde.org/whups/
* Requirements: Horder framework 3.2+. PHP 4.3+.
* Most databases are supported.
* License: BSD license

phpBugTracker

* Web: http://phpbt.sourceforge.net/
* Requirements: PHP 4.0.6+.
* Supported databases are MySQL, PostreSQL and Oracle.
* License: BSD license

Other PHP Systems

* Flyspray - http://flyspray.org/
* FireAnt - http://chaozz.nl/software/fireant/
* zenTrack - http://www.zentrack.net

PHP performance tips by google

2009-06-26T23:16:00.000-07:00

1) Upgrade your version of PHP

2) Use caching

3) Use output buffering

4) Don't copy variables for no reason.

5) Avoid doing SQL queries within a loop

6) Use single-quotes for long strings.

7) Use switch/case instead of if/else.

How to read integer value from XML in PHP and after read add those value

2009-05-23T00:52:00.000-07:00

When you read XML in php through simple xml class then at the time of integer value you need to type cast those value in "string", because
when you read through simple xml class object then he return the object(show through the var_dump).

Ex:

your XML look like -

now you want to read both ints tag value and add both value.

/*

$xml->load('abc.xml');

foreach($xml->a[0] as $abTagObj)
{

$ints[] = (String)$abTagObj->ints;
}

array_sum($ints); // show the total of all ints tag.

*/

but if you not type cast ints tag value as "string" then when you go for add then show the total as 0.

If still any question then pleases put your comment i will answer you. or any question regarding PHP, javascript, ajax, css, html, mysql put your comment feel free.

Memcache for Code and Performance

2009-04-25T06:14:00.000-07:00

"Memcache for Code and Performance "

When website has high traffic then continuos every time fetch record from db and show on the client side is tedious job and we need high performance then we use Memcache.

What is Memcache?

"memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load."

What is MemcacheDB?

It's a distributed key-value storage system designed for persistent. It is NOT a cache solution, but a persistent storage engine for fast and reliable key-value based object storage and retrieval. It conforms to memcache protocol(not completed, see below), so any memcached client can have connectivity with it. MemcacheDB uses Berkeley DB as a storing backend, so lots of features including transaction and replication are supported.

Before you get too excited keep in mind this is a key-value store. You read and write records by a single key. There aren't multiple indexes and there's no SQL. That's why it can be so fast.

The original client for memcached was written in Perl by the folks at Danga Interactive. The Python client is now maintained by a 3rd party group. The PHP client is available as a PECL package.PHP client is written in C as a PHP extension. The other two are written in Perl and Python. So, all the complex code has to be interpretted. For PHP however, most of the work happens in the engine, not in PHP code. This makes the PHP client far superior in performance to the other two. By default, memcached uses the port 11211.

The system is used by several very large, well-known sites including YouTube, LiveJournal, Slashdot, Wikipedia, SourceForge, ShowClix, GameFAQs, Facebook, Digg, Twitter, Fotolog, BoardGameGeek, NYTimes.com, deviantART, Jamendo, Kayak and in our Mobshare too.

PHP provides support for the Memcache functions through a PECL extension. To enable the PHP memcache extensions, you must build PHP using the --enable-memcache option to configure when building from source.

A few important things about memcache:

Memcache is a daemon, meaning it runs as a separate service on your machine. Just like MySQL runs as a separate service. In fact, to use memcache in PHP you have to connect to it, just like MySQL.

Think of memcache as the $_SESSION variable for PHP, but instead of it working on a per-user basis, it runs over the entire application — like MySQL. In fact, you can use memcache as you session handler for PHP.

Memcache to work on windows machine:

Download memcache [grab the 'win32 binary' version]

Install memcache as a service:

Unzip and copy the binaries to your desired directory (eg. c:\memcached) [you should see one file, memcached.exe] - thanks to Stephen for the heads up on the new version

If you’re running Vista, right click on memcached.exe and click Properties. Click the Compatibility tab. Near the bottom you’ll see Privilege Level, check “Run this program as an administrator”.

Install the service using the command: c:\memcached\memcached.exe -d install from the command line

Start the server from the Microsoft Management Console or by running one of the following commands: c:\memcached\memcached.exe -d start, or net start "memcached Server"

Now that you have memcache installed, you’ll have to tie it in with PHP in order to use it.

1. Check your php extensions directory [should be something like: C:\php\ext] for php_memcache.dll
If you don’t have any luck finding it, try looking here: pecl4win.php.net/ext.php/php_memcache.dll [or look here for PHP 5.2.*]

2. Now find your php.ini file [default location for XP Pro is C:\WINDOWS\php.ini] and add this line to the extensions list:

extension=php_memcache.dll

3. Restart apache

4. Run this code to test the installation:

/*

$memcache = new Memcache;
$memcache->connect("localhost",11211);

"Server's version: " . $memcache->getVersion();

$tmp_object = new stdClass;
$tmp_object->str_attr = "test";
$tmp_object->int_attr = 123;

$memcache->set("key",$tmp_object,false,10);
echo "Store data in the cache (data will expire in 10 seconds)";

echo "Data from the cache:";
var_dump($memcache->get("key"));
*/

If you see anything but errors, you are now using memcache!

EDIT

Memcached, by default, loads with 64mb of memory for it’s use which is low for most applications. To change this to something else, navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\memcached Server in your registry, find the ImagePath entry and change it to look something like this:

“C:\memcached\memcached.exe” -d runservice -m 512

Now when you start the service via net start “memcached Server”, it will run with 512mb of memory at it’s disposal.

Memcache Functions:

The memcache object has several methods. With the Memcache::set method we can add an entry to the cache. The method had four arguments:

a key

any serializable variable we'd like to cache, in this case it's a string

a boolean whether we want to use on-the-fly zip compression using libz

the cache expiry measured in seconds

Ex: - $memcache->set("key",$tmp_object,false,10);

Memcache::add — Add an item to the server

Memcache::addServer — Add a memcached server to connection pool

Memcache::close — Close memcached server connection

Memcache::connect — Open memcached server connection

memcache_debug — Turn debug output on/off

Memcache::decrement — Decrement item's value

Memcache::delete — Delete item from the server

Memcache::flush — Flush all existing items at the server

Memcache::get — Retrieve item from the server

Memcache::getExtendedStats — Get statistics from all servers in pool

Memcache::getServerStatus — Returns server status

Memcache::getStats — Get statistics of the server

Memcache::getVersion — Return version of the server

Memcache::increment — Increment item's value

Memcache::pconnect — Open memcached server persistent connection

Memcache::replace — Replace value of the existing item

Memcache::setCompressThreshold — Enable automatic compression of large values

Memcache::setServerParams — Changes server parameters and status at runtime

The data is converted into a string with the serialize() function, so numbers, strings, arrays, and most objects will be stored easily… only resources (file descriptors, database connections, MemCache connections) can not be stored effectively.

It is important to keep in mind that if the MemCached server crashes or the process dies, all your cache data will be lost. Always store the actual data in a database server or another persistent storage system.

Conclusion

While the example we created is fairly trivial, it’s easy to see how this technique can be expanded throughout your site. Other queries and other data can be cached with similar benefits. Obviously, MemCached isn’t the only solution to web scaling and data caching, but it can be a pretty useful. Often, as seen in our example, a MemCached solution can be implemented and put in place with minimal code changes, minimal time, and, hopefully, minimum downtime for your users!

Future of Web Development with Hypertext Preprocessor V6

2009-04-25T06:11:00.000-07:00

"Future of Web Development with Hypertext Preprocessor V6"

Are you ready for PHP V6? If you were upgrading tomorrow, would your scripts execute just fine or would you have work to do?

With the "PHP 6 Developers Meeting Notes" out I finally took a while to go and read through them and figure out what is the best way to move forward and start writing code that will be compatible not only for 4x and 5x but continue on though 6x.

New PHP V6 features

Unicode support:
The primary alteration in PHP6 is support for Unicode(

"Unicode is a computing industry standard allowing computers to consistently represent and manipulate text expressed in most of the world's writing systems.An encoding scheme that allows for virtually all major world languages to be encoded into a single character set. " )

Much improved for PHP V6 is support for Unicode strings in many of the core functions. This new feature has a big impact because it will allow PHP to support a broader set of characters for international support. So, if you're a developer or architect using a different language, such as the Java™ programming language, because it has better internationalization (i18n) support than PHP, it'll be time to take another look at PHP when the support improves.

Namespaces:
Namespaces are a way of avoiding name collisions between functions and classes without using prefixes in naming conventions that make the names of your methods and classes unreadable. So by using namespaces, you can have class names that someone else might use, but now you don't have to worry about running into any problems.

Move XML extension :
The XMLReader and XMLWriter extensions will move into the core distribution and will be on by default.

Move Fileinfo exntesion :
The extremely useful Fileinfo exntesion will move into the core distribution and enabled by default.

Static Binding :
A new keyword will be created to allow for late static binding - static::static2(), this will perform runtime evaluation of statics.

FastCGI always on :
The FastCGI code will be cleaned up and always enabled for the CGI SAPI, it will not be able to be disabled.

64 bit integers added :
64 bit integers added(int64), no int32(it is assumed unless you specify int64).

"break" keyword extended :
break keyword will be extended with a static label - so you could do 'break first' and it'll jump to the label first: in your code.

foreach multi-dim arrays :
foreach multi-dim arrays - you'll be able to foreach through array lists, i.e. "foreach( $a as $k => list($a, $b))".

{} vs [] :
You can currently use both {} and [] to access string indexes. But the {} notation will raise an E_STRICT in PHP5.1 and will be gone totally in PHP6. Also the [] version will gain substr and array_slice functionality directly - so you could do "[2,]" to access characters 2 to the end, etc.

E_STRICT merges into E_ALL :
This is quite a serious one! E_STRICT level messages will be added to E_ALL by default. This shows a marked move by the PHP team to educate developers on 'best practises' and displaying language-level warnings.

dl() only enable it when a SAPI(Server API) layer registers it explicitly

Make "var" an alias for "public" and remove the warning for it

Things removed from PHP V6

In addition to having new features, PHP V6 will not have some other functions and features that have been in previous versions. Most of these things, such as register_globals and safe_mode, are widely considered "broken" in current PHP, as they may expose security risks.

Features that will be removed from the PHP version include:

Magic Quotes to go :
The magic quotes feature of PHP will be going, and as with register globals it's going to raise an E_CORE_ERROR if the setting is found anywhere. This will affect magic_quotes, magic_quotes_sybase and magic_quotes_gpc.

Register Globals to go :
It will no longer be an ini file setting, and if found it will raise an E_CORE_ERROR,finally break all PHP3 era scripts with no recourse at all but to re-code it.

Register Long Arrays to go :
Remember the HTTP_*_VARS globals from yesteryear? Well if you're not already using $_GET, $_POST, etc - start doing so now, because the option to enable long arrays is going (and will throw an E_CORE_ERROR).

Safe Mode to go :
This may please developers who have web hosts that insist upon safe mode! But it will now go totally, again raising an E_CORE_ERROR if found. The reason is that apparently they felt it gave the 'wrong signal', implying that it made PHP secure, when infact it didn't at all. open_basedir will (thankfully) be kept.

Short php tags :
Microsoft Active Server Pages (ASP)-style tags — the shorter version of the PHP tags — are no longer supported

ereg extension :
The ereg extension, which supports Portable Operating System Interface (POSIX) regular expressions, is being removed from core PHP support.

Return by Reference will error :
Don't initiate objects with the reference operator(E_STRICT error)

Stop Freetype 1 and GD 1 support
Stop Freetype 1(TrueType rendering engine library) and GD 1(dynamic creation of images library) support

Some of the features mentioned here have also been ported to PHP V5.3, so that when you move to V6 of PHP, it'll be less of a jump.
The following list of features have been back-ported to V5.3, such as - " Namespaces"

Conclusions

That is about all If you are still using php4 to php5 compatibility, you might want to think about removing PHP5 in the coming months since there is already 6.0 dev versions out. Yes I know you guys do not like to give up your old ways(adoption of PHP6 even slower than that of PHP5 becuase of no backward compatibility) but it is time to move on.

Now PHP is becoming closer to enterprise apps. PHP6 is not a software revolution, but rather a standards evolution, which is sometimes more important in enterprise applications.

PHP classes question

2009-03-21T03:58:00.000-07:00

1) class myclass{

}

if you run this code then what you get ?

Guesss ... answer in last

2) class parent{

$a = 2;
}

$obj_parent = parent();

if you run this code then what you get ?

Guesss ... answer in last

Answer :

1) Fatel error
2) Parent word is reserve so again Fatel error.

Famous javascript Library list and javascript framework

2009-01-11T01:49:00.000-08:00

Famous javascript Library list -

* Ample SDK
* Backbase
* Clean AJAX
* Dojo Toolkit
* Echo
* Ext
* Himle
* JQuery
* Joose (framework)
* Microsoft AJAX Library
* midori
* Mochikit
* MooTools
* My Library
* Morfik
* OpenLink AJAX Toolkit
* Prototype JavaScript Framework
* qooxdoo
* Rialto Toolkit
* Rico
* Script.aculo.us
* SmartClient
* Spry framework
* Yahoo! UI Library

PHP MVC Framework list

2009-01-11T01:46:00.000-08:00

10- Ambivalence: A Java-Maverick Port
9- WACT: Web Application Component Toolkit
8- Achievo: A good RAD framework
7- Phrame: A Java-Struts port
6- Studs: A Java-Struts port to PHP
5- Prado: The winner of Zend coding contest
4- PHPOnTrax: a Rails port - PHP5 Only
3- CakePHP: Inspired by Rails PHP4/5
2- Mojavi: The first MVC framework I fell in love with

and the winner is:

1- Symfony: Based on Mojavi and inspired by Rails

This list is based on my personal tests and use. I have tested and played with many others, but I think these are the best frameworks out there.
- The first framework I fell in love with was Mojavi because of its elegant way to implement the MVC model.
- Symfony corrected some problems in Mojavi and improved it by taking the good sides of RubyOnRails and Propel.
- CakePHP is very promising, the only problem - really, I don't know if it is a problem - is: the development process is very slow.

Only selected are print through javascript

2008-09-27T05:40:00.000-07:00

Hi friends

If you want to take only selected area print out not whole web page then use the following guidelines and enjoy :-

Take a print are in a single div and any event like onclick , onblur what ever you eant call the below javascript function -

/* function fnPrintArea()
{
var DocumentContainer = document.getElementById('print_table_div_id');
var WindowObject = window.open('', "printarea",
"width=850,height=850,top=200,left=250,toolbars=no,scrollbars=yes,status=no,resizable=no");
WindowObject.document.writeln(DocumentContainer.innerHTML);
WindowObject.document.close();
WindowObject.focus();
WindowObject.print();
WindowObject.close();
}

*/

Multiple date selection javascript calendar

2008-09-27T05:34:00.000-07:00

Hi all There is a link please vistite for multiple date selection calendar in javascript

http://www.dynarch.com/projects/calendar/

If you face some issue(not sure may be , because i am facing when i have implement this) on there like

calender not show in IE7 properly ?

or

you want to disabler older date or range of dates ?

Or

Single click problem ?

then use the same site forum for all your question passionaly and still you are face problem then fill free comment here i will answer all your question as soon as possible.

how Same session Id in http:// and https://

2008-09-27T05:27:00.000-07:00

If you have the condition like that you want same session id in the http and HTTPS prtocal the simple one line solution:-

Just make it one .htaccess file and upload in your server top root directory

and write the .htaccess like this -

"

php_value session.cookie_domain ".domain_name.com"

"

so now save the .htaccess file and upload on the server and check the cookie of your web browser , when you redirect from http to https or vicecersa your session id remain same.

Or any question regarding this feel free comment here.....

phpcamppune08 - PHP camp at pune 2008

2008-09-09T08:46:00.000-07:00

PHPCamp is a ‘ad-hoc gathering’ for PHP community. It similar to barcamp , but more focused towards PHP based web application development. This means that anyone can come to PHPCamp and participate.

Event Details

Date: 20th September 2008 (saturday) .

Time: 10:00am to 6:00pm (Whole day event) .

To register for PHPCamp register yourself at PHPCamp.org

To know more join phpcamp on google groups.

PHP with smarty template engine installation

2008-08-30T23:34:00.000-07:00

PHP with smarty installation is so easy....

just download the stable version of smarty package and unzip the folder and rename folder name "smarty"

and now you create four directory in your application folder

1) config
2) templates_c
3) templates
4) cache

and just create one php file and here just specify the pathe of smaty.connect.php file and all four directory path

like the pls see example below

// put full path to Smarty.class.php
require('/usr/local/lib/php/Smarty/Smarty.class.php');
$smarty = new Smarty();

$smarty->template_dir = '/web/www.domain.com/smarty/templates';
$smarty->compile_dir = '/web/www.domain.com/smarty/templates_c';
$smarty->cache_dir = '/web/www.domain.com/smarty/cache';
$smarty->config_dir = '/web/www.domain.com/smarty/configs';

$smarty->assign('name', 'MANISH');
$smarty->display('index.tpl');

now include above php file anywhere and use the smartyy template magic.

any question then pls cooment here....i will give u the answer...thanks

Connect Mysql database in php

2008-08-30T23:26:00.000-07:00

PHP main target is to make possible build dynamic web sites.
This possibility is available by using some database system to store information and manipulate them, when system and user needs it.
On PHP a large number of database systems come by default embbed as libraries.
On this article we will learn how to use one of the most used on data handling - MySQL.
MySQL can be installed easly, by downloading EasyPHP.
This application installs Mysql on a web based version, it means that you can manage all database processes on your browser.
It allows to create databases, and tables, edit fields , backup tables system database and a large option of new features.
To access the interface that allows you to create database click with the right button of mouse on tray icon "Administration".
Right next click

MySQL MANAGER

it will open the window where you must the name of your database and next it will ask for your table name.

Check how many fields you need on your table and build it.

Now the database and table are created let´s configure the conection to the mysql server using PHP.
Remember that server is configured with an default username and password.
You can make secure by changing it at your choice.

Follows the PHP code generated to build the table

CREATE TABLE `admin` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(40) NOT NULL,
`password` varchar(16) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM

and now time to connect with php this table.....

$con = mysql_connect("localhost","database usernam","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}

Major Changes betwwen PHP4 and PHP5 XML support

2008-07-26T00:38:00.000-07:00

Two extensions have changed.The XSLT extension present in PHP4 is not the XSL extension in PHP 5.Additionally, the XML-DOM extension in PHP 4 is not the DOM extensionis PHP 5. What this means is that the syntax of the functions in theseextensions have changed but the purpose of the extensions has notchanged.

PHP 5 Object Model

2008-07-26T00:36:00.000-07:00

PHP 5 there is a new Object Model. PHP's handling of objects has been completely rewritten, allowing for better performance and more features. In previous versions of PHP, objects were handled like primitive types (for instance integers and strings). The drawback of this method was that semantically the whole object was copied when a variable was assigned, or passed as a parameter to a method. In the new approach, objects are referenced by handle, and not by value (one can think of a handle as an object's identifier).Many PHP programmers aren't even aware of the copying quirks of the old object model and, therefore, the majority of PHP applications will work out of the box, or with very few modificationsThe new Object Model is documented at the http://www.php.net/manual/en/language.oop5.php

PHP 5 array types

2008-07-26T00:35:00.000-07:00

Types of arrays:

Numerically indexed arrays
Associative arrays
Multidimensional arrays
Sorting arrays

how write javascript code into PHP code ?

2008-07-26T00:33:00.000-07:00

You just echo / print the javascript like you would do with html, like:

echo and then start script tag here

write the code echo alert();

echo and script tag end here

PHP stand for?

2008-07-26T00:31:00.000-07:00

PHP is short for "PHP: Hypertext Preprocessor".

include path settings , without access to php.ini

2008-07-25T23:48:00.000-07:00

If you are hosting on a Linux server you may (Depending on your host) be able to use .htaccess this file must be in the root of the web directory.The format is along the lines of (For PHP4 Module):-php_value include_path .:/path/that/you/want/to/usephp_value magic_quotes_gpc "off"php_value track_errors "on"

Pear Package PHP Description

2008-07-25T23:45:00.000-07:00

What is PEAR?
how install the PEAR?
Quoted from PEAR's homepage at http://pear.php.net/"PEAR is a framework and distribution system for reusable PHP components."So what can PEAR be used for?In short it's will be a full framework for building php applications, meaning there will be classes for most purposes you can use instead of writing your own code. If you are a current/former perl programmer PEAR has simalaraties to perl's CPAN framework. For more information about PEAR and how you get started look at the following articles:
http://www.onlamp.com/pub/a/php/2001/05/24/pear.html
http://www.onlamp.com/pub/a/php/2001/07/19/pear.html
The official PEAR homepage is found here

how to convert PHP array in to PHP object ?

2008-06-07T04:51:00.000-07:00

$a = $array("a"=> 1, "b"=> 2);

now type cast array in to object...

$arrayObj = (object)$a;

now u able to use like object and method.....

echo $arrayObj->a; // output 1
echo $arrayObj->b;// output 2

but only work with key as a string.....not work with indexed array.

How to get current date..in PHP..?????

2008-06-07T04:50:00.000-07:00

just simple

use a inbuilt PHP date() function and pass the time() function as a parameter....

like...

echo date("y/m/d",time());

first parameter is date format.

and second is PHP inbuilt time() function.

List of Output Control Functions in PHP 5

2008-06-07T04:49:00.000-07:00

o flush — Flush the output buffer
o ob_clean — Clean (erase) the output buffer
o ob_end_clean — Clean (erase) the output buffer and turn off output buffering
o ob_end_flush — Flush (send) the output buffer and turn off output buffering
o ob_flush — Flush (send) the output buffer
o ob_get_clean — Get current buffer contents and delete current output buffer
o ob_get_contents — Return the contents of the output buffer
o ob_get_flush — Flush the output buffer, return it as a string and turn off output

buffering
o ob_get_length — Return the length of the output buffer
o ob_get_level — Return the nesting level of the output buffering mechanism
o ob_get_status — Get status of output buffers
o ob_gzhandler — ob_start callback function to gzip output buffer
o ob_implicit_flush — Turn implicit flush on/off
o ob_list_handlers — List all output handlers in use
o ob_start — Turn on output buffering
o output_add_rewrite_var — Add URL rewriter values
o output_reset_rewrite_vars — Reset URL rewriter values

List of Predefined variables in PHP 5 and PHP 4

2008-06-07T04:48:00.000-07:00

PHP5 and PHP4 provides a large number of predefined variables to all scripts.

* Superglobals — Superglobals are built-in variables that are always available in all scopes
* $GLOBALS — References all variables available in global scope
* $_SERVER — Server and execution environment information
* $_GET — HTTP GET variables
* $_POST — HTTP POST variables
* $_FILES — HTTP File Upload variables
* $_REQUEST — HTTP Request variables
* $_SESSION — Session variables
* $_ENV — Environment variables
* $_COOKIE — HTTP Cookies
* $php_errormsg — The previous error message
* $HTTP_RAW_POST_DATA — Raw POST data
* $http_response_header — HTTP response headers
* $argc — The number of arguments passed to script
* $argv — Array of arguments passed to script

PHP5 Encapsulation Surprises to you ..........

2008-06-07T04:45:00.000-07:00

In PHP5, unlike Java or C++, $this has to be explicitly used to refer to variables within a

class.

The value of $this is determined by the context in which it is called. In certain situations

$this may actually refer to the invoking class rather then the current class. This breaks object

encapsulation.

$this pseudo-variable is not defined if the method in which it is located is called statically

with an exception as noted below.

$this is defined if a method is called statically from within another object. In this case, the

value of $this is that of the calling object.

The following example from PHP manual will clarify this:

foo();
A::foo();
$b = new B();
$b->bar();
B::bar();
?>

Output:

$this is defined (a)
$this is not defined.
$this is defined (b)
$this is not defined.

How do I send mails with PHP?

2008-02-28T07:18:00.000-08:00

PHP has a function called mail for that purpose, example (from php.net):

mail("nobody@example.com", "the subject", $message,
"From: webmaster@$SERVER_NAME\r\n"
."Reply-To: webmaster@$SERVER_NAME\r\n"
."X-Mailer: PHP/" . phpversion());

For more information about the function look here:
http://www.php.net/manual/en/ref.mail.php

I have lost my MySQL root password, how can I get in?

2008-02-28T07:17:00.000-08:00

If you have forgotten the root user password for MySQL, you can restore it with the following procedure:

Take down the mysqld server by sending a kill (not kill -9) to the mysqld server.

The pid is stored in a .pid file, which is normally in the MySQL database directory:
kill `cat /mysql-data-directory/hostname.pid`

You must be either the Unix root user or the same user the server runs as to do this.

Restart mysqld with the --skip-grant-tables option.

Connect to the mysqld server with mysql -h hostname mysql and change the password with a GRANT command.

See section 7.35 GRANT and REVOKE Syntax http://www.mysql.com/doc/G/R/GRANT.html

You can also do this with mysqladmin -h hostname -u user password 'new password'

Load the privilege tables with: mysqladmin -h hostname flush-privileges or with the SQL command FLUSH PRIVILEGES.

Note that after you started mysqld with --skip-grant-tables, any usage of GRANT commands will give you an Unknown command error until you have executed FLUSH PRIVILEGES.

PHP - File Upload

2007-12-19T08:31:00.000-08:00

When the uploader.php file is executed, the uploaded file exists in a temporary storage area on the server. If the file is not moved to a different location it will be destroyed! To save our precious file we are going to need to make use of the $_FILES associative array.

The $_FILES array is where PHP stores all the information about files. There are two elements of this array that we will need to understand for this example.

uploadedfile - uploadedfile is the reference we assigned in our HTML form. We will need this to tell the $_FILES array which file we want to play around with.
$_FILES['uploadedfile']['name'] - name contains the original path of the user uploaded file.
$_FILES['uploadedfile']['tmp_name'] - tmp_name contains the path to the temporary file that resides on the server. The file should exist on the server in a temporary directory with a temporary name.

Now we can finally start to write a basic PHP upload manager script! Here is how we would get the temporary file name, choose a permanent name, and choose a place to store the file.

PHP Code:

// Where the file is going to be placed
$target_path = "uploads/";

/* Add the original filename to our target path. 
Result is "uploads/filename.extension" */
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
$_FILES['uploadedfile']['tmp_name'];

NOTE: You will need to create a new directory in the directory where uploader.php resides, called "uploads", as we are going to be saving files there.

We now have all we need to successfully save our file to the server. $target_path contains the path where we want to save our file to.

E-mail With PHP

2007-11-19T04:32:00.000-08:00

Introduction

One of the major uses of a server side scripting language is to provide a way of sending e-mail from the server and, in particular, to take form input and output it to an e-mail address. In this part I will show you how to send e-mail messages using PHP.

The Mail Command

Mail is extremely easy to send from PHP, unlike using scripting languages which require special setup (like CGI). There is actually just one command, mail() for sending mail. It is used as follows:

mail($to,$subject,$body,$headers);

In this example I have used variables as they have descriptive names but you could also just place text in the mail command. Firstly, $to. This variable (or section of the command) contains the e-mail address to which the mail will be sent. $subject is the section for the subject of the e-mail and $body is the actual text of the e-mail.

The section $headers is used for any additional e-mail headers you may want to add. The most common use of this is for the From field of an e-mai but you can also include other headers like cc and bcc.

Sending An E-mail

Before sending your mail, if you are using variables, you must, of course, set up the variable content beforehand. Here is some simple code for sending a message:

$to = "php@gowansnet.com";
$subject = "PHP Is Great";
$body = "PHP is one of the best scripting languages around";
$headers = "From: webmaster@gowansnet.com\n";
mail($to,$subject,$body,$headers);
echo "Mail sent to $to";

This code will acutally do two things. Firstly it will send a message to php@gowansnet.com with the subject 'PHP Is Great' and the text:

PHP is one of the best scripting languages around

and the e-mail will be from webmaster@gowansnet.com. It will also output the text:

Mail sent to php@gowansnet.com

to the browser.

Formatting E-mail

Something you may have noticed from the example is that the From line ended with \n. This is acutally a very important character when sending e-mail. It is the new line character and tells PHP to take a new line in an e-mail. It is very important that this is put in after each header you add so that your e-mail will follow the international standards and will be delivered.

The \n code can also be used in the body section of the e-mail to put line breaks in but should not be used in the subject or the To field.

Mail Without Variables

The e-mail above could have been sent using different variable names (it is the position of the variables in relation to the commas, not the name of them which decides on their use). It could also have been done on one line using text like this:

mail("php@gowansnet.com","PHP Is Great","PHP is one of the best scripting languages around","From: webmaster@gowansnet.com\n");

But that would make your code slightly harder to read.

Error Control

As anyone who has been scripting for a while will know, it is extremely easy to make mistakes in your code and it is also very easy to input an invalid e-mail address (especially if you are using your script for form to mail). Because of this, you can add in a small piece of code which will check if the e-mail is sent:

if(mail($to,$subject,$body,$headers)) {
echo "An e-mail was sent to $to with the subject: $subject";
} else {
echo "There was a problem sending the mail. Check your code and make sure that the e-mail address $to is valid";
}

Testing For PHP and MySQL install successfully or not......

2007-11-19T04:26:00.000-08:00

There is a simple test for both PHP and MySQL. Open a text editor and type in the following:

phpinfo();

and save it as phpinfo.php

and run in the browser...display the all information about php version, mysql version and other apache setting.

mainly the display file is information about php.ini file....

The Include Function in PHP5

2007-11-19T04:22:00.000-08:00

The include function takes a file name and simply inserts that file's contents into the script that calls used the include function.

Well, first of all, this means that you can type up a common header or menu file that you want all your web pages to include. When you add a new page to your site, instead of having to update the links on several web pages, you can simply change the Menu file.

 include('header.php');

The include command simply takes all the text that exists in the specified file and copies
it into the file that uses the include function.  Include is quite useful when you want
to include the same PHP, HTML, or text segment on multiple pages of a website.  The include
function is used widely by PHP web developers.

Connecting to ODBC and PHP

2007-11-14T21:13:00.000-08:00

# connect to a DSN "mydb" with a user and password "marin"
$connect = odbc_connect("mydb", "marin", "marin");

# query the users table for name and surname
$query = "SELECT name, surname FROM users";


# perform the query
$result = odbc_exec($connect, $query);


# fetch the data from the database
while(odbc_fetch_row($result)){
 $name = odbc_result($result, 1);
 $surname = odbc_result($result, 2);
 print("$name $surname\n");
}


# close the connection
odbc_close($connect);
?>

What is ODBC?

2007-11-14T21:12:00.000-08:00

Open DataBase Connectivity is an Application Programming Interface (API) that allows a programmer to abstract a program from a database. When writing code to interact with a database, you have to add code that talks to a particular database using a proprietary API. If you want your program to talk to an Access, FoxPro and Oracle databases you have to code your program with three different database API's. This can be quite the daunting task causing much grief. Now, enter ODBC...

When programming to interact with ODBC you only need to use the ODBC API (a combination of ODBC extension function calls and the SQL language) to talk to different database products. The ODBC Manager will figure out how to contend with the type of database you are targeting. Regardless of the database type you are using, all of your calls will be to the ODBC API. All that you need to do is have installed an ODBC driver that is specific to the type of database you will be using.

PHP Database ODBC Connection

2007-11-14T21:08:00.000-08:00

ODBC is an Application Programming Interface (API) that allows you to connect to a data source (e.g. an MS Access database).

Create an ODBC Connection

With an ODBC connection, you can connect to any database, on any computer in your network, as long as an ODBC connection is available.

Here is how to create an ODBC connection to a MS Access Database:

Open the Administrative Tools icon in your Control Panel.
Double-click on the Data Sources (ODBC) icon inside.
Choose the System DSN tab.
Click on Add in the System DSN tab.
Select the Microsoft Access Driver. Click Finish.
In the next screen, click Select to locate the database.
Give the database a Data Source Name (DSN).
Click OK.

Connecting to a mySQL database using PHP

2007-10-29T22:04:00.000-07:00

SHOW available tables in mySQL database

Similar to opening a file to write to it, you have to open a connection to mySQL before you can do anything. The syntax of this function is as follows:

mysql_connect("localhost OR hostname:port", "httpd OR username", "" or "password");

$mysql_access = mysql_connect("localhost", "username", "password");
mysql_close($mysql_access);
?>

The function mysql_close is unnecessary unless you are setting a persistent connection. To set a persistent mySQL connection use:

mysql_pconnect("localhost", "username", "password");

You would want to use persistent connections where you would have a lot of simulataneous connections from the same user through the script.

The following script below will open your mySQL database connection and show the tables available to you in your mySQL database. You must always open a connection to the mySQL database before doing anything else (you only need to open it at the beginning of a script, and then you can run multiple queries if you want). This is good for testing your ability to successfully access the mySQL database.

$mysql_access = mysql_connect("localhost", $user, $pw);
mysql_select_db($db, $mysql_access);

$result = mysql_query("SHOW tables", $mysql_access);
while($row = mysql_fetch_row($result))
{
print("$row[0]
");
}

in above script

$user is a mysql username.

$pw is mysql password.

$db is mysql database name

php programme first php script

2007-10-26T07:35:00.000-07:00

The Most Basic Computer Program
So how do I do it in PHP? Well the two simplest ways are using Print or Echo.

PHP5 and mysql and apache in one pack-WAMP Server installation on windows

2007-10-26T07:32:00.000-07:00

PHP5 and mysql and apache in one pack-WAMP Server installation on windows

You can install Apache Server, MySQL, and PHP in one step using WAMP. WAMP is a freeware package that bundles Apache, MySQL, and PHP into one executable. You can download WAMP from the project homepage. Once you download WAMP, double click the icon and begin the install process.
Click Next to begin:After agreeing to the WAMP license, select the destination location. Leave the default location as "c:\wamp" and click Next:Leave the default Start Menu shortcut as "WampServer" and click Next:Select automatically launch WAMP5 on startup. This will allow Vista to act as a server whenever it is started. Select the check box and click Next:WAMP will summarize your selections. Click Install and WAMP will begin the install process:WAMP will extract and install itself. The process should only take a few seconds, and WAMP will prompt you to choose a folder for your "DocumentRoot." Leave the default folder as "www" and click Ok:WAMP will prompt you to enter the SMTP server to be used by PHP to send emails. Leave the default value as "localhost" and click Next:WAMP will then prompt you to enter the default email address to be used by PHP to send emails. Put your email address in this field and click Next:If you have Firefox installed, WAMP will ask you if you would like to use Firefox as the default browser with WAMP. This is a personal preference, so feel free to choose "Yes" or "No." I will choose "Yes" and then click Next:You will likely be prompted by Vista whether the Windows Firewall should allow or block the features of WAMP. You want to allow all of the features of WAMP, so click Unblock:Congratulations, the installation process is complete, click Finish and Launch WAMP5 now:Open a browser and enter "localhost" as the URL, and you will see a summary of the installation process:now go to browser… and type in the address bar…..

http://localhost/

and press inter..default wamp server page is open……
now u go to c:/wamp/www/myfolder

myfolder is ur web folder where u put on ur .php pages.

And now run ur php page like this…

Go to Browser address bar

http://localhost/myfolder/ index.php

now happy and enjoy…..now read the other post from my blog and enjoy…and expert in the php script…..

php on IIS 6 intallation

2007-10-26T07:26:00.000-07:00

PHP is a really cool server side scripting interface with loads of options and modules and is relatively easier than ASP (the only other server side scripting language I've used). IIS 6 is also a cool web server with loads of new options. So here is how you configure php on IIS:(I'm assuming IIS is already installed on your box)
1. Download php from this location2. Unzip the package to some location(c:\php or whatever)3. Copy the php.ini-recommended file to your %systemroot% directory(usually C:\Windows) or to the %PHPRC% location, if %PHPRC% variable is set.4. Rename the file as php.ini5. Edit the file to make your config. I usually do the following(only minimal stuff):a. Open short tags ("" should work for me, I'm too lazy)b. Edit my extension_dir to the right location("c:\php\ext\" or whatever)** DO NOT FORGET TO PUT THE TRAILING BACKSLASH.**c. Enable my extensions...like php_ldap etc...d. other stuff...error handling, session mgmt etc etc....please read the docs. :-)6. Open your IIS snap-in (inetmgr in "Run")7. Create your website/virtual directory.8. Enable php on the entire website or your virtual directory:a. Go to the directory tab, click configuration, click Add.b. Put in ".php" (without the quotes) in the extension box.c. Point the Executable file to "php5isapi.dll" (in your php directory)d. Give your verbs(usually GET,HEAD,POST,TRACE would do)e. Ensure "Check that file exists" is checked. (saves time and resources)9. Only for IIS 6:a. Click on "Web Service Extensions".b. Click "Add new web service extension"c. Give some name and add the php5isapi.dll file and select allow.10. Add the php directory to your path(sysdm.cpl in "Run",Environment Variables under the Advanced tab, under "System Variables", edit the Path variable and append the path to your php directory to it(like C:\php where C:\php is the location of your php source).11. Restart IIS and enjoy.
Update(thanks to 'anonymous' :-): One important point I forgot to mention - You need to give the user IIS is running as (usually IUSR_MACHINENAME) permissions on your php directory and files, other wise you will end up with 403 or 404 errors.
I've seen on a lot of posts where people mention that they need to copy some files to system32 directory, and I do not think that its required. Here is a filemon snapshot of the location my IIS is finding the extensions:

Each time you make any changes to the php.ini file, you need to restart your webserver.
UPDATE: If you get a prompt for username and password in Firefox even though you enabled just anonymous access, you need to enable the following:a. In your Firefox window,type in 'about:config' without the quotesb. You will find a text box called Filter, type in 'auth' without the quotesc. You'll find an entry called network-automatic-ntlm-auth.trusted-urisd. Double-click on it. It will open a small input window.e. Enter the name of the website (usually if you're having issues with http://localhost), enter localhost and click OK. (You can enter multiple sites by separating them with commas)

how to start php coding and setup and installation,

2007-10-26T06:31:00.000-07:00

Install an Apache server on a Windows or Linux machine
Install PHP on a Windows or Linux machine
Install MySQL on a Windows or Linux machine

PHP + MySQL

2007-10-26T06:25:00.000-07:00

Why PHP?

PHP runs on different platforms (Windows, Linux, Unix, etc.)
PHP is compatible with almost all servers used today (Apache, IIS, etc.)
PHP is FREE to download from the official PHP resource: www.php.net
PHP is easy to learn and runs efficiently on the server side

PHP scripting----------

PHP is now officially known as “PHP: HyperText Preprocessor”. It is a server-side scripting language usually written in an HTML context. Unlike an ordinary HTML page, a PHP script is not sent directly to a client by the server; instead, it is parsed by the PHP binary or module, which is server-side installed. HTML elements in the script are left alone, but PHP code is interpreted and executed. PHP code in a script can query databases, create images, read and write files, talk to remote servers - the possibilities are endless. The output from PHP code is combined with the HTML in the script and the result sent to the user?s web-browser, therefore it can never tell the user whether the web-server uses PHP or not, because all the browser sees is HTML.
PHP’s support for Apache and MySQL further increases its popularity. Apache is now the most-used web-server in the world, and PHP can be compiled as an Apache module. MySQL is a powerful free SQL database, and PHP provides a comprehensive set of functions for working with it. The combination of Apache, MySQL and PHP is all but unbeatable.
That doesn?t mean that PHP cannot work in other environments or with other tools. In fact, PHP supports an extensive list of databases and web-servers. The rise in popularity of PHP has coincided with a change of approach in web-publishing. While in the mid-1990s it was ok to build sites, even relatively large sites, with hundreds of individual hard-coded HTML pages, today?s webmasters are making the most of the power of databases to manage their content more effectively and to personalize their sites according to individual user preferences.

Reasons for using PHP

There are some indisputable great reasons to work with PHP. As an open source product, PHP is well supported by a talented production team and a committed user community. Furthermore, PHP can be run on all the major operating systems with most servers.
The speed of development is also important. Because PHP allows you to separate HTML code from scripted elements, you will notice a significant decrease in development time on many projects. In many instances, you will be able to separate the coding stage of a project from the design and build stages. Not only can this make life easier for you as a programmer, but it also can remove obstacles that stand in the way of effective and flexible design.
Well-maintained open source projects offer users additional benefits. You benefit from an accessible and committed community who offer a wealth of experience in the subject, as fast and as cheap as possible. Chances are that any problem you encounter in your coding can be answered swiftly and easily with a little research. If that fails, a question sent to a mailing list or forum can have an intelligent, authoritative response. You also can be sure that bugs will be addressed as they are found, and that new features will be made available as the need is defined. You will not have to wait for the next commercial release before taking advantage of improvements, and there is no hidden interest in a particular server product or operating system. You are free to make choices that suit your needs or those of your clients and incorporate whatever components you want.

Why MySQL?

Choosing a database system depends on three main factors; the platform on which you work, your finances and what you want to achieve. The reason I chose MySQL is because, I work mostly on the Linux system and MySQL is free for Linux. Also, I am an ardent supporter of Open Source Software movement and firmly believe that the combination of Linux, Apache, MySQL and PHP (LAMP) is hard to beat.

What is MySQL?

2007-10-26T06:22:00.001-07:00

MySQL is a simple, yet powerful Open Source Software relational database management system that uses SQL.

MYSQL(pronounced "My ess cue el") is an open source Relational Database Management System that uses Structured Query Language. Information is stored in "Tables" which can be thought of as the equivalent of Excel spreadsheets. A single MySQL database can contain many tables at once and store thousands of individual records. It's fast, reliable and flexible.

What Is PHP?

2007-10-26T06:15:00.000-07:00

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

The endless possibilities of the PHP scripting language and a great community of users has made it one of the most popular open-source languages. For all you people living outside the UNIX world, Open Source means it doesn?t cost anything. You can use it as much as you want and where you want, and nobody will ever charge you thousands of dollars for licenses and support. Even though it was originally conceived as a set of macros to help coders maintain personal home pages, its name grew a lot more from its purpose. Since then, PHP?s capabilities have been extended, taking it beyond a set of utilities to a full-featured programming language, capable of managing huge database-driven online environments.

PHP stands for PHP: Hypertext Preprocessor
PHP is a server-side scripting language, like ASP
PHP scripts are executed on the server
PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.)
PHP is an open source software (OSS)
PHP is free to download and use

A PHP file may contain text, HTML tags and scripts. Scripts in a PHP file are executed on the server.

That's a mouthful, but if we break the definition down into smaller pieces, it is easier to understand.
server-side: This means that PHP scripts execute on the Web server, not within the browser on your local machine.
cross-platform: Cross-platform means that PHP scripts can run on many different operating systems and Web servers. PHP is available for the two most popular Web server configurations (IIS running on Windows NT and Apache running on UNIX).
HTML embedded scripting language: This means that PHP statements and commands are actually embedded in your HTML documents. When the Web server sees the PHP statements in the Web page, the server executes the statements and sends the resulting output along with the rest of the HTML. PHP commands are parsed by the server much like Active Server Pages or Cold Fusion tags.