Revision: 65844
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at January 28, 2014 22:49 by apphp-snippets
Initial Code
<?php
$ip_address = '127.0.0.1';
if(preg_match('/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $ip_address)){
echo 'IP address is valid!';
}else{
echo 'IP address is NOT valid!';
}
?>
Initial URL
http://www.apphp.com/index.php?snippet=php-validate-ip-address
Initial Description
This code demonstrates a simple way to validate IP address using preg_match() PHP function. This is a very simple code, that allows you to perform this task quickly with a minimum lines of code.
Initial Title
Validate IP Address in PHP
Initial Tags
php, validation
Initial Language
PHP