PHP 模拟POST请求

/**
 * 模拟post进行url请求
 * @param string $url
 * @param array $post
 */
function request_post($url, $post = array())
{
	if (empty($url) || empty($post))
	{
		return false;
	}
	
	$post_data = http_build_query($post);

	$ch = curl_init();//初始化curl
	curl_setopt($ch, CURLOPT_URL, $url);//抓取指定网页
	curl_setopt($ch, CURLOPT_HEADER, 0);//设置header
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
	curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
	curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
	$data = curl_exec($ch); //运行curl
	
	curl_close($ch);
	
	return $data;
}