How do I determine the client IP type (IPv4/IPv6) in PHP In the PHP, there are filters which can determine IPv4 and IPv6: FILTER_VALIDATE_IP, FILTER_FLAG_IPV4, FILTER_FLAG_IPV6.Below code shows how to determine the client protocol:This code snippet checks whether the client's IP address is IPv4 or IPv6 using fil... |
How to ban / block IP addresses This example gets the users IP address and exits the page if it matches a banned number. |
How to send email in PHP ? Send an email from PHP - one line example. |
How to pass variables via url Pass variables to a page using the question mark, for example mypage.php?value=hello.Access these variables with the _GET command. |
How to declare array in PHP like C/C++ simple php array declaration: 'Do', 'Re', 'Me');//print out arrayprint_r($notes);?> |
PHP date and time formatting The Smarty date_format function returns a formatted string showing date, time and/or seconds.index.php:assign('yesterday', strtotime('-1 day'));$smarty->display('index.tpl');?>index.tpl:{$smarty.now|date_format}{$smarty.n... |
How to redirect browser in PHP ? Using the php header function, a browser can be redirected to another page. |
How to get current filename as variable ? Sometimes you need just the filename of the current script, without the path. This snippet does just that using the SCRIPT_NAME and explode function. $currentFile = $_SERVER["SCRIPT_NAME"]; $parts = Explode('/', $currentFile);&n... |
email validation, simple Validate an email address - returns TRUE or FALSE. Checks format only, does not use any networking functions to verify the account actually exists. |
for loop - simple for loop - basic control structure. This example loops until the variable hits 10 and then breaks out. 10) { break; } echo $i;}?>sample output :12345678910 |
form action - detect form post There are several ways to process a php form. This example looks for the existance (regardless of value) of the Submit _POST variable.//check if the submit variable existsif ($_POST['Submit']) { echo " |
How to make random number ? Generate a random number using mt_rand. From the php documentation- "If called without the optional min, max arguments mt_rand() returns a pseudo-random value between 0 and RAND_MAX. If you want a random number between 5 and 15 (inclusive), for example, us... |
How to check if a file exists ? To determine whether a file exists on the server, PHP has a simple function: file_exists. |
How to include a file with error reporting ? Sometimes you want to be able to give some feedback if a PHP include has failed. Here is a version using the fopen command, which can search the include path. |
PHP if...else... example Followings are the basic example of an if then else control structure. |
PHP form handling example in single page This example shows a very simple form together with the form handling process on a single page.//check if the submit variable existsif ($_POST['Submit']) { $mytext=$_POST['mytext']; echo " |
How to get reffering URL ? Grabs the referring URL - get the HTTP_REFERER and save it to a variable.code snippet:$ref = getenv("HTTP_REFERER");echo $ref;?> |
How to convert formatted date time string to datetime? Whatever the formatted string is, strtotime() function convert the formatted date time string to datetime.Following example shows the simple reference can convert date time string whatever the formatted input is...function foo($formatted_time){ retur... |
How to remove or set time limit that defined as max_execution_time in php.ini PHP provides the alternate function which can control time limit that defined in php.ini. Following is the alternate function can control time limit.void set_time_limit (int seconds);Set the number of seconds a script is allowed to run. If this is reached,... |
Adding and Subtracting Time The time () function generates a long string of numbers representing how many seconds have passed since January 1, 1970. It is possible to add and subtract time by adding and subtracting seconds. |
The three simplest regular expressions you will use in PHP The three most basic searches using regular expressions are searching for the strings start, the strings end, or for characters it contains. We can do these using the following symbols:^ indicates the string starts with the specified characters, so "^strcp... |
Send email Message With PHP This source code describes how to send email with php with headers |
Array_count_values This code prints array count values$array = array(1,"hello",1,"world","hello");print_r(array_count_values($array));?> |
Calculator with basic four functions See below as calculator with basic four functions. |
Number Format In this article we'll make number format like 0001, 0002, 0003 in stead of 1, 2 ,3. It's very easy to do this for your counter, category or product ID. etc.
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A Function Returns Large Random Numbers This basically randomly pick a number between the min and max values. This is made because the rand() and mt_rand() function can not accept numbers larger than 2^31 or 2^63,depend on your processor and complier. |
Function AccountCryptPassword($password,$salt) Encryption and password account accessFunction AccountCryptPassword($password,$salt) { if($salt=="") { srand(time()); $random=rand(); $itoa64="./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; &n... |
Cardinal Endings This php based script will find numbers and give them a cardinal ending. This can be useful for displaying rankings or results of a competition. The script is easy to install and use
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URL Rewriter PHP URL Rewriter PHP is a short code that can be used to rewrite dynamic PHP urls as URL's that link to static html pages. Increases search engine ranksings by creating a static system of page linking as well as making all content available |
Browser detection in PHP Sometimes, you may want to know what kind of browser is connecting to your web site. Actually such kind of information is usually stored in $_SERVER. Below is the reference: |