PHP curl关于异步提交的有关问题

<?php<br /><br />$url='http://www.xinshangmeng.com/xsm2/index.html?v=20140430';<br />$cookie_file=tempnam('./temp','cookie');<br />$post_fileds='username=1111&password=1111';<br /><br /><br />$ch = curl_init($url);<br />curl_setopt($ch,CURLOPT_HEADER,0);<br />curl_setopt($ch,CURLOPT_RETURNTRANSFER,0);<br />curl_setopt($ch,CURLOPT_POST,1);<br />curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);<br />curl_setopt($ch,CURLOPT_POSTFIELDS,$post_fileds);<br />curl_exec($ch);<br />curl_close($ch);<br />?>