PHP get_headers to determine if the 200 encountered a non-existent script execution timeout

PHP get_headers to determine if the return is 200 encountered a non-existent script execution timeout
A nonexistent IP URL will wait for a response until the function times out, causing the page to be too slow to display.

Failed to open Stream:http request failed!
Fatal error:maximum execution time of seconds exceeded

Set the Ini_set (' Max_execution_time ', 10);

Do not use this function to write the socket itself, with this function of the curl_init, trouble, what do you have a good way not


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discuss

I'm not going to let him do that all the time. Execute for up to 5 seconds, let him stop, but don't hold the wrong

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discuss

Dizzy, csdn original more dull, old, reply to how long time has not come out

I don't want to let PHP go on, give him a time like 5 seconds, no results, no, directly judge the following on the line
Set_time_limit (5) If you use this, the program stops directly.

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Resource Fsockopen (string $hostname [, int $port =-1 [, int & $errno [, String & $errstr [, float $timeout = ini_ Get ("Default_socket_timeout")]])
The last parameter $timeout set to 5, the maximum connection time is 5 seconds, the expiration function returns, and the program does not exit
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Thinking is upstairs, get_headers can only say PHP this function is not perfect, we only use the socket to write their own
Because I can not give their own points, I use another account landing, the following is the complete code, but also to others to contribute to the

PHP Code

function Doget ($url) {$url 2 = Parse_url ($url);    if (!isset ($url 2[' path ')) $url 2[' path ']= '; $url 2["path"] = ($url 2["path"] = = ""? "    /": $url 2[" path "]);    $url 2["port"] = (isset ($url 2["port")? $url 2["Port"]:80);    $host _ip = @gethostbyname ($url 2["host"]);  $fsock _timeout = 2; 2 Second if (! (        $fsock = Fsockopen ($host _ip, $url 2["Port"], $errno, $errstr, $fsock _timeout)) {//echo ' Fsockopen fail ';    return false; } $request = $url 2["path"]. (Isset ($url 2["Query"])? "?".            $url 2["Query"]: ""); $in = "GET". $request.    "Http/1.0\r\n";    $in. = "Accept: */*\r\n";    $in. = "user-agent:payb-agent\r\n"; $in. = "Host:". $url 2["Host"].    "\ r \ n";            $in. = "connection:close\r\n\r\n";        Stream_set_timeout ($fsock, $fsock _timeout);        if (! @fwrite ($fsock, $in, strlen ($in))) {//echo ' fwrite fail ';        Fclose ($fsock);    return false;    } $status = Stream_get_meta_data ($fsock); Send data timeout if ($status [' Timed_out ']) {//echo "Write Time Out";        Fclose ($fsock);    return false;    } $out = null;        while ($buff = @fgets ($fsock, 2048)) {$out. = $buff;    Read Only header information if (False!==strpos ($out, "\r\n\r\n")) break;    } $status = Stream_get_meta_data ($fsock);        Read Data timeout if ($status [' timed_out ']) {//echo "Read Time Out";        Fclose ($fsock);    return false;        } fclose ($fsock);    $pos = Strpos ($out, "\r\n\r\n");    $head = substr ($out, 0, $pos); HTTP head return $head;}  $rs = doget ("http://www.ba05afasdfsiddf08usfa.com"), if (! $rs) echo ' fail '; else echo $rs;
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