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<?php
// Sample website url
$url = "http:://www.example.com";
// Remove all illegal characters from url
$url = filter_var($url, FILTER_SANITIZE_URL);
// Validate website url
if(filter_var($url, FILTER_VALIDATE_URL)){
echo "The $url is a valid website url";
} else{
echo "The $url is not a valid website url";
}
?>