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<?php $urls = array( "http://backend_dev.ms.ji-dev1.bgcc.at/", "asdf.bc", "http://google.at", "www.google.at", "https://service.justimmo.at/objekt" ); foreach ($urls as $url) { if (filter_var($url, FILTER_VALIDATE_URL) === false) { echo("$url ########################### INVALID"); } else { echo("$url -- VALID"); } echo "\n"; var_dump(is_url($url)); } function is_url($uri){ if(preg_match( '/^(http|https):\\/\\/[a-z0-9_]+([\\-\\.]{1}[a-z_0-9]+)*\\.[_a-z]{2,5}'.'((:[0-9]{1,5})?\\/.*)?$/i' ,$uri)){ return $uri . " -- VALID"; } else{ return false; } }