This is just a simple PHP function that verify a input string to see if it’s a valid URL with right format or not. It uses regex expression to match.
This function works for almost cases (website url) but it’s not exhaustive, I’m sure 🙂
PHP Validate URL function
<?php function validate_url($url) { if (!preg_match("#^http(s)?://[a-z0-9-_.]+\.[a-z]{2,4}#i",$url)) return "0"; return "1"; } ?> |
Usage
<?php $url = "http://4rapiddev.com"; if(validate_url($url) == "1") echo "It's a valid URL"; else echo "It is NOT a valid URL"; ?> |
Output
It's a valid URL |
