//非阻塞请求
function sock_data($url) {
$host = parse_url($url,PHP_URL_HOST);
$port = parse_url($url,PHP_URL_PORT);
$port = $port ? $port : 80;
$scheme = parse_url($url,PHP_URL_SCHEME);
$path = parse_url($url,PHP_URL_PATH);
$query = parse_url($url,PHP_URL_QUERY);
if($query) $path .= '?'.$query;
if($scheme == 'https') {
$host = 'ssl://'.$host;
}
$fp = fsockopen($host,$port,$error_code,$error_msg,1);
if(!$fp) {
return array('error_code' => $error_code,'error_msg' => $error_msg);
}
else {
stream_set_blocking($fp,0);//开启了非阻塞模式
stream_set_timeout($fp,1);//设置超时
$header = "GET $path HTTP/1.1\r\n";
$header.="Host: $host\r\n";
$header.="Connection: close\r\n\r\n";//长连接关闭
fwrite($fp, $header);
usleep(1000); // 如果没有这延时,可能在nginx服务器上就无法执行成功
fclose($fp);
return array('error_code' => 0);
}
}
测试一下:
echo date('Y-m-d H:i:s'), PHP_EOL; sock_data("http://www.baidu.com"); echo date('Y-m-d H:i:s'), PHP_EOL;