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Url exists function to check remote url

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If you have to test if a remote url is correct you can use CURL and get the headers returned by the http request. If you receive a 200 code, than it’s ok, else the url is not correct:

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  1. function url_exists($url) {
  2. 	$ch = @curl_init($url);
  3. 	@curl_setopt($ch, CURLOPT_HEADER, TRUE);
  4. 	@curl_setopt($ch, CURLOPT_NOBODY, TRUE);
  5. 	@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
  6. 	@curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
  7. 	$status = array();
  8. 	preg_match('/HTTP\/.* ([0-9]+) .*/', @curl_exec($ch) , $status);
  9. 	return ($status[1] == 200);
  10. }

URL: http://www.barattalo.it/2010/01/06/test-if-a-remote-url-exists-with-php-and-curl/

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