php fsockopen异步请求非阻塞模式执行
//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;