PHP – How to check if a URL exists or NOT? – Three Simple Solutions

1. function test_url($url) {
2. $res = (($ftest = @fopen($url, 'r')) === false) ? false : @fclose($ftest);
3. return ($res == TRUE);
4. }

function test_url($url) {
  $res = (($ftest = @fopen($url, 'r')) === false) ? false : @fclose($ftest);
  return ($res == TRUE);
}

1. function test_url_2($url) {
2. $addr=parse_url($url);
3. $host=$addr['host'];
4. $path = $addr['path'];
6. $headtxt = ";
8. if($sock=fsockopen($host,80, $errno, $errstr, 3)) {
9. fputs($sock, "HEAD $path HTTP/1.0\r\nHost: $host\r\n\r\n");
10. while(!feof($sock)){
11. $headtxt .= fgets($sock);
12. }
13. }
15. $pos1 = stripos($headtxt, "200 OK");
16. return ($pos1 === false) ;
17. }

function test_url_2($url) {
  $addr=parse_url($url);
  $host=$addr['host'];
  $path = $addr['path'];

  $headtxt = ";

  if($sock=fsockopen($host,80, $errno, $errstr, 3)) {
    fputs($sock, "HEAD $path HTTP/1.0\r\nHost: $host\r\n\r\n");
    while(!feof($sock)){
      $headtxt .= fgets($sock);
    }
  }

  $pos1 = stripos($headtxt, "200 OK");
  return ($pos1 === false) ;
}

1. function test_url_3($url) {
2. $ch = curl_init();
3. curl_setopt($ch, CURLOPT_URL, $url);
4. curl_setopt($ch, CURLOPT_NOBODY, true);
5. curl_exec($ch);
6. $response_code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
7. curl_close($ch);
8. return ($response_code == 200);
9. }

function test_url_3($url) {   
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_NOBODY, true);
  curl_exec($ch);
  $response_code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE); 
  curl_close($ch);  
  return ($response_code ==  200);
}