PHP FILTER_SANITIZE_URL Filter

Definition and Usage

The FILTER_SANITIZE_URL filter removes all illegal URL characters from a string.

This filter allows all letters, digits and $-_.+!*'(),{}|\\^~[]`"><#%;/?:@&=

<?php
$var="https://www.w3schoo��ls.co�m";

var_dump(filter_var($var, FILTER_SANITIZE_URL));
?>

The output of the code will be:

string(24) "https://www.w3schools.com"