Php - Find an url exists in php or not, Search fo url in a file

Find an url exists in php or not

Check wheather a url exists in a files or not.

 function urlOK($url)
 {
 $url_data = parse_url ($url);
 if (!$url_data) return FALSE;
 
 $errno="";
 $errstr="";
 $fp=0;
 
 $fp=fsockopen($url_data['host'],80,$errno,$errstr,30);
 
 if($fp===0) return FALSE;
 $path ='';
 if (isset( $url_data['path'])) $path .= $url_data['path'];
 if (isset( $url_data['query'])) $path .= '?' .$url_data['query'];
 
 $out="GET /$path HTTP/1.1rn";
 $out.="Host: {$url_data['host']}rn";
 $out.="Connection: Closernrn";
 
 fwrite($fp,$out);
 $content=fgets($fp);
 $code=trim(substr($content,9,4));
 fclose($fp);
 return ($code[0] == 2 || $code[0] == 3) ? TRUE : FALSE;
 }
 if (urlOK($url)) echo " is a working URL";
 else echo " is a bad URL";
 ?>

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