PHP - CHECK IF A URL IS VALID

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function isvalidURL($url) { $check = 0; if (filter_var($url, FILTER_VALIDATE_URL) !== false) {   $check = 1; } return $check; }

Syntax

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<?php $url = "http://koonk.com"; $check = checkvalidURL($url); echo $check; //if returns 1 then URL is valid. ?>