Php performance optimization on basic syntax and core here are some performance

PHP Performance Optimization on Basic Syntax and Core 
   
Here are some performance/optimization tips, tricks and best practices to keep in mind when developing in PHP.
 The list will be updated on a regular basis, so check back for updates 

 Basic Syntax & Core 
• Use single quotes instead o...

Mohammad Towhidul Islam

02-Oct-13 05:44:42 pm

Expose php credits adding phpb8b5f2a0 3c92 11d3 a3a9 4c7b08c10000 at the

Expose  PHP credits 
   
Adding ?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000 at the end of the URL of PHP scripts will expose the PHP credits....

Mohammad Towhidul Islam

02-Oct-13 05:38:27 pm

Get the apache version which are we using heres a quick way

Get the Apache version 
   
 Which Apache version are we using? 
 Here's a quick way to find out:
 
<?= apache_get_version(); ?>
 
 It will print something like this: 

Apache/1.3.31 (Debian GNU/Linux) mod_throttle/3.1.2 PHP/4.3.9-1...

Mohammad Towhidul Islam

02-Oct-13 05:29:54 pm

Create an image on the fly with php gd library we already know

Create an image on the fly with the PHP GD library 
We already know how to return an already made image; here's how to create an image on the fly:
   
 
<?php
header ("Content-type: image/png");
$im = @imagecreate (150, 50)
   or die ("Couldn't create image!");
$bac...

Mohammad Towhidul Islam

02-Oct-13 05:28:31 pm

Error reporting with php depending on whether youre programming debbuging or installing

Error reporting with PHP 
   
Depending on whether you're programming/debbuging or installing a script on a production server, you may want error reporting more or less verbose.

Here's how to change it:
 
<?
// Disable all error reporting
error_reporting(0);

// Default configuration
...

Mohammad Towhidul Islam

02-Oct-13 05:12:35 pm

Display currencies with php sometimes we must display a number as money

Display currencies with PHP  

Sometimes we must display a number as a money amount, but we can know what's the correct way to display each possible currency. Nevermind, PHP will do that for you: 
   
 
<?php
$number = 1234.56;

// USA (USD 1,234.56)
setlocale(LC_MONETARY, 'en_US'...

Md Fahad

01-Oct-13 04:41:52 pm

How to make pagination with php if isset getpg pg int

How to make pagination with php? 
 
if(isset($_GET['pg'])){
                     $pg=(int)$_GET['pg'];
						}else{
					 $pg=1;
						 }
	
				 // i want to show 16 row on a page, so the limit is also 16		
	            $start_from=($pg-1)*16;
                   			   

					$im...

Mohammad Towhidul Islam

01-Oct-13 01:35:33 am

Detecting visitors real ip address mobile web browser opera mini is well

Detecting Visitors Real IP Address  

   

Mobile web browser opera mini is well known for a similar IP
address for different users. Detecting the real ip address of an
operamini user becomes hard while using the $_SERVER["REMOTE_ADDR"] php
command.

But we can detect the real ip using a ...

Mohammad Towhidul Islam

01-Oct-13 01:24:33 am

Check if website is available with php performs a curl request to check

Check if website is available with PHP 
Performs a cURL-Request to check, if a website exists / is online
   
 Technique #1 
 

    <?php

           if (isDomainAvailible('/'))
           {
                   echo "Up and running!";
           }
           else
           {
...

Mohammad Towhidul Islam

01-Oct-13 01:17:27 am

Cleaning variables that are submitted via web forms variables always need to

Cleaning variables that are submitted via web forms 
   
Variables that are submitted via web forms always need to be cleaned/sanitized before use in any way, to prevent against all kinds of different malicious intent.
    
 function clean($value) {

           // If magic quotes not turned on add ...

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