PHP：如何通过curl登录聊天室

Question

i want to play with curl functions for different examples!
for example i want to login to chatrooms by this code:

<?php
$url = 'http://www.lxchat.ir/';
    $postVars = array('username'=>'Alberto','password'=>'','gender'=>'1');
    $tmpfname = dirname(__FILE__).'/cookie.txt';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch,CURLOPT_TIMEOUT, 60);
    curl_setopt($ch,CURLOPT_POST,TRUE);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$postVars);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $tmpfname);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $tmpfname);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    $run = curl_exec($ch);
    $info = curl_getinfo($ch);
    curl_close($ch);
    echo $info['redirect_url'];
?>

but this code didn't work!!! how to resolve this problem?
1- Login to chatroom
2- send a message
please help me ...
Thanks

Answer 1

if you want to provide post data you should use http_build_query. I mean use:

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postVars));

instead of

curl_setopt($ch,CURLOPT_POSTFIELDS, $postVars);

It may be your problem.