Curl_errno returns 0 instead of 6

Question

$data_struct = array(); $data_struct[]['opts'] = array( CURLOPT_URL => 'http://www.yahoo.com/', CURLOPT_RETURNTRANSFER => true); $data_struct[]['opts'] = array( CURLOPT_URL => 'http://www.google.com/', CURLOPT_RETURNTRANSFER => true); $data_struct[]['opts'] = array( CURLOPT_URL => 'http://404.php.net/', CURLOPT_RETURNTRANSFER => true); //create the multiple cURL handle $mh = curl_multi_init(); // create and add handles to data structure foreach ($data_struct as $i => $data){ $data_struct[$i]['handle'] = curl_init(); curl_setopt_array($data_struct[$i]['handle'], $data_struct[$i]['opts']); curl_multi_add_handle($mh, $data_struct[$i]['handle']); } $active = null; //execute the handles do { $mrc = curl_multi_exec($mh, $active); } while ($mrc == CURLM_CALL_MULTI_PERFORM); while ($active && $mrc == CURLM_OK) { if (curl_multi_select($mh) != -1) { do { $mrc = curl_multi_exec($mh, $active); } while ($mrc == CURLM_CALL_MULTI_PERFORM); } } foreach ($data_struct as $i => $data){ $row = array(); $row['httpcode'] = curl_getinfo($data_struct[$i]['handle'] , CURLINFO_HTTP_CODE); $row['url'] = $data['opts'][CURLOPT_URL]; $row['error'] = curl_error($data_struct[$i]['handle']); $row['errorno'] = curl_errno($data_struct[$i]['handle']); print_r($row); echo "\n"; curl_multi_remove_handle($mh, $data_struct[$i]['handle']); curl_close($data_struct[$i]['handle']); } 

Exit

 Array ( [httpcode] => 302 [url] => http://www.yahoo.com/ [error] => [errorno] => 0 ) Array ( [httpcode] => 302 [url] => http://www.google.com/ [error] => [errorno] => 0 ) Array ( [httpcode] => 0 [url] => http://404.php.net/ [error] => Couldn't resolve host '404.php.net' [errorno] => 0 ) 

In the same situation, multi curl returns 0 with the curl_errno function, even though curl_error returns an error message.

Answer 1

If you have PHP 5.2.x or higher (better here, but better). In this case, I would suggest using curl_multi_info_read() . (See: curl_multi_info_read () docs .)

You can see the output of curl_multi_info_read() , putting it closer to the end of your code (after the line echo "\n"; ), for example:

 var_dump(curl_multi_info_read($mh)); 

This seems to give the correct errno (in particular, "result" => 6 ):

 Array ( [httpcode] => 0 [url] => http://404.php.net/ [error] => Couldn't resolve host '404.php.net' [errorno] => 0 ) array(3) { ["msg"]=> int(1) ["result"]=> int(6) ["handle"]=> resource(7) of type (curl) } 

Note: tested on installing PHP 5.2.8.

Answer 2

Codes Array:

 $codes_texts = [ 0 => 'OK', 1 => 'UNSUPPORTED_PROTOCOL', 2 => 'FAILED_INIT', 3 => 'URL_MALFORMAT', 4 => 'URL_MALFORMAT_USER', 5 => 'COULDNT_RESOLVE_PROXY', 6 => 'COULDNT_RESOLVE_HOST', 7 => 'COULDNT_CONNECT', 8 => 'FTP_WEIRD_SERVER_REPLY', 9 => 'FTP_ACCESS_DENIED', 10 => 'FTP_USER_PASSWORD_INCORRECT', 11 => 'FTP_WEIRD_PASS_REPLY', 12 => 'FTP_WEIRD_USER_REPLY', 13 => 'FTP_WEIRD_PASV_REPLY', 14 => 'FTP_WEIRD_227_FORMAT', 15 => 'FTP_CANT_GET_HOST', 16 => 'FTP_CANT_RECONNECT', 17 => 'FTP_COULDNT_SET_BINARY', 18 => 'PARTIAL_FILE', 19 => 'FTP_COULDNT_RETR_FILE', 20 => 'FTP_WRITE_ERROR', 21 => 'FTP_QUOTE_ERROR', 22 => 'HTTP_NOT_FOUND', 23 => 'WRITE_ERROR', 24 => 'MALFORMAT_USER', 25 => 'FTP_COULDNT_STOR_FILE', 26 => 'READ_ERROR', 27 => 'OUT_OF_MEMORY', 28 => 'OPERATION_TIMEOUTED', 29 => 'FTP_COULDNT_SET_ASCII', 30 => 'FTP_PORT_FAILED', 31 => 'FTP_COULDNT_USE_REST', 32 => 'FTP_COULDNT_GET_SIZE', 33 => 'HTTP_RANGE_ERROR', 34 => 'HTTP_POST_ERROR', 35 => 'SSL_CONNECT_ERROR', 36 => 'FTP_BAD_DOWNLOAD_RESUME', 37 => 'FILE_COULDNT_READ_FILE', 38 => 'LDAP_CANNOT_BIND', 39 => 'LDAP_SEARCH_FAILED', 40 => 'LIBRARY_NOT_FOUND', 41 => 'FUNCTION_NOT_FOUND', 42 => 'ABORTED_BY_CALLBACK', 43 => 'BAD_FUNCTION_ARGUMENT', 44 => 'BAD_CALLING_ORDER', 45 => 'HTTP_PORT_FAILED', 46 => 'BAD_PASSWORD_ENTERED', 47 => 'TOO_MANY_REDIRECTS', 48 => 'UNKNOWN_TELNET_OPTION', 49 => 'TELNET_OPTION_SYNTAX', 50 => 'OBSOLETE', 51 => 'SSL_PEER_CERTIFICATE', 52 => 'GOT_NOTHING', 53 => 'SSL_ENGINE_NOTFOUND', 54 => 'SSL_ENGINE_SETFAILED', 55 => 'SEND_ERROR', 56 => 'RECV_ERROR', 57 => 'SHARE_IN_USE', 58 => 'SSL_CERTPROBLEM', 59 => 'SSL_CIPHER', 60 => 'SSL_CACERT', 61 => 'BAD_CONTENT_ENCODING', 62 => 'LDAP_INVALID_URL', 63 => 'FILESIZE_EXCEEDED', 64 => 'FTP_SSL_FAILED', ]; 

Script:

 $urls = array( "http://php.net/", "http://404.php.net/", "httpnot://php.net/", ); $mh = curl_multi_init(); $codes = []; $result = []; $connects = []; foreach ($urls as $i => $url) { $connects[$i] = curl_init($url); curl_setopt($connects[$i], CURLOPT_RETURNTRANSFER, 1); curl_multi_add_handle($mh, $connects[$i]); } do { $status = curl_multi_exec($mh, $active); $info = curl_multi_info_read($mh, $count); if ($info !== false) { $codes[(int)$info['handle']] = (int)$info['result']; } } while ($status === CURLM_CALL_MULTI_PERFORM || $active || $count); foreach ($connects as $i => $connect) { $result[$i] = [ 'url' => $urls[$i], 'code' => $codes[(int)$connect], // 0 - 64 = curl_errno 'code_text' => $codes_texts[$codes[(int)$connect]], 'body_len' => strlen(curl_multi_getcontent($connect)), ]; curl_close($connect); } curl_multi_close($mh); echo "<pre>" . var_export($result, 1) . "</pre>"; 

Result:

 array ( 0 => array ( 'url' => 'http://php.net/', 'code' => 0, 'code_text' => 'OK', 'body_len' => 34462, ), 1 => array ( 'url' => 'http://404.php.net/', 'code' => 6, 'code_text' => 'COULDNT_RESOLVE_HOST', 'body_len' => 0, ), 2 => array ( 'url' => 'httpnot://php.net/', 'code' => 1, 'code_text' => 'UNSUPPORTED_PROTOCOL', 'body_len' => 0, ), )