Validate کردن آدرس IP

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.

<?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!';
    }
    ?>