Solution to php curl obtaining web page content (timeout under IPV6)_PHP tutorial

<?<span php
</span><span /*</span><span *
* IPV6下curl超时问题
* edit by www.jbxue.com
</span><span */</span>
<span $ch</span> =<span  curl_init();
curl_setopt (</span><span $ch</span>, CURLOPT_URL, <span $url</span><span );
curl_setopt (</span><span $ch</span>, CURLOPT_RETURNTRANSFER, <span true</span><span );
</span><span //</span><span 设置curl默认访问为IPv4</span>
<span if</span>(<span defined</span>('CURLOPT_IPRESOLVE') && <span defined</span>('CURL_IPRESOLVE_V4'<span )){
curl_setopt(</span><span $ch</span>, CURLOPT_IPRESOLVE,<span  CURL_IPRESOLVE_V4);
}
</span><span //</span><span 设置curl请求连接时的最长秒数，如果设置为0，则无限</span>
curl_setopt (<span $ch</span>, CURLOPT_CONNECTTIMEOUT, <span $timeout</span><span );
</span><span //</span><span 设置curl总执行动作的最长秒数，如果设置为0，则无限</span>
curl_setopt (<span $ch</span>, CURLOPT_TIMEOUT,<span $timeout</span>*3<span );
</span><span $file_contents</span> = curl_exec(<span $ch</span><span );
curl_close(</span><span $ch</span>);