php curl 发布两次

Question

I know this is duplicate question. I tried all solutions from stackoverflow.com but I could not resolve it. This is very random behavior. When php curl post to destination server api, sometimes same request get posted twice to destination. I checked if source php is refreshed, but php is not refreshed. Another strange thing I noticed that, I get curl output of re-post request only. I don't get curl output of first original request.

$curl_unit = curl_init($URL);

curl_setopt($curl_unit, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl_unit, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl_unit, CURLOPT_POST, 1);
curl_setopt($curl_unit, CURLOPT_POSTFIELDS, $postdata);
curl_setopt($curl_unit, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl_unit, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl_unit, CURLOPT_INTERFACE, gethostbyname($_SERVER['HTTP_HOST']));
curl_setopt($curl_unit, CURLOPT_REFERER, $_SERVER['HTTP_HOST']);
curl_setopt($curl_unit, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

$curl_output = curl_exec($curl_unit);
$code = curl_getinfo($curl_unit, CURLINFO_HTTP_CODE);

curl_close($curl_unit);
SaveMyLog("DATA RECEIVED FROM destination: \r\n" . $curl_output . "\r\n Http code response: " . $code . "\r\n");

Above mentioned code is general code for curl in all php pages of the project. Later I tried different curl code when I found some solutions on stackoverflow. Following is new curl code which is also not working sometimes and same random strange behavior happens.

$curl_unit = curl_init($URL);

curl_setopt($curl_unit, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl_unit, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl_unit, CURLOPT_POST, 1);
curl_setopt($curl_unit, CURLOPT_POSTFIELDS, $postdata);
curl_setopt($curl_unit, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($curl_unit, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl_unit, CURLOPT_INTERFACE, gethostbyname($_SERVER['HTTP_HOST']));
curl_setopt($curl_unit, CURLOPT_REFERER, $_SERVER['HTTP_HOST']);
curl_setopt($curl_unit, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

ob_start(); 
curl_exec($curl_unit);
$code = curl_getinfo($curl_unit, CURLINFO_HTTP_CODE);
curl_close($curl_unit);
$curl_output = ob_get_contents(); 
ob_end_clean();         

SaveMyLog("DATA RECEIVED FROM destination: \r\n" . $curl_output . "\r\n Http code response: " . $code . "\r\n");
ob_end_flush();

Please note $URL and $postdata is already defined. SaveMyLog function is used for logging purpose.

function SaveMyLog($lin, $deprecated = 'mylog.log')
{
    $logid = '';
    $date = getdate();
    $fileName = basename($_SERVER['SCRIPT_FILENAME']);
    $file = str_replace('.php', '', $fileName);

    $logfile = $file . "_" . $date['year'] . "-" . $date['mon'] . "-" . $date['mday'] . ".log";

    $fd = fopen('./logs/application_logs/' . $logfile, 'a+');
    fwrite($fd, date('Y-m-d H:i:s') . $logid . "\t" . $lin . "\n");
    fclose($fd);
    @chmod('../logs/application_logs/' . $logfile, 0666);
}

Answer 1

您可以尝试使用 CSRF 令牌，这会在每次请求后更改。

Answer 2

from your code i see no reason why it should behave in such strange manner.

So there can be some other problem. If you are calling the script from a browser, make sure the browser calls it just once.

Why does a browser send two requests for the same page when it's refreshed?

Answer 3

我们遇到了同样的问题，我们通过禁用或卸载 Firebug Lite 扩展来解决它。