#关于php curl的并发代码

1.先写个核心的时间的文件名为.test.php 代码如下

list($usec, $sec) = explode(" ", microtime());
$str= date("Y-m-d H:i:s.").(float)$usec;
file_put_contents("./test.txt",$str."\n",FILE_APPEND);
echo $str;

2,curl并发核心代码

$urls=[            
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
            "http://127.0.0.10/tp5/pay/public/test.php",
        ];
        $handle=[];
        $running = 0;
        $wait_usec = intval(30);
        $mh = curl_multi_init(); // multi curl handler
        foreach($urls as $key=>$url) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return don't print
            curl_setopt($ch, CURLOPT_TIMEOUT, 30);
            curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Linux; U; Android 6.4.4; zh-CN; Che1-CL10 Build/Che1-CL10) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/10.10.0.800 U3/0.8.0 Mobile Safari/534.30');
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // 302 redirect
            //if ($post_data[$key]){curl_setopt ( $ch, CURLOPT_POSTFIELDS, $post_data[$key]);}
            curl_setopt($ch, CURLOPT_MAXREDIRS, 7);
            curl_multi_add_handle($mh, $ch); // 把 curl resource 放进 multi curl handler 里
            $handle[$key] = $ch;
        }
        /* 执行 */
        do {
            curl_multi_exec($mh, $running);
            if ($wait_usec > 0) /* 每个 connect 要间隔多久 */
                usleep($wait_usec); // 250000 = 0.25 sec
        } while ($running > 0);
        foreach($handle as $i => $ch) {
            $content  = curl_multi_getcontent($ch);
            if (curl_errno($ch) == 0){
                 dump($content);
            }
        }
        /* 移除 handle*/
        foreach($handle as $ch) {
            curl_multi_remove_handle($mh, $ch);
        }
        curl_multi_close($mh);

#返回结果

string(26) "2018-05-14 02:01:08.0.3482"
string(26) "2018-05-14 02:01:08.0.3482"
string(26) "2018-05-14 02:01:08.0.3572"
string(26) "2018-05-14 02:01:08.0.3632"
string(26) "2018-05-14 02:01:08.0.3582"
string(26) "2018-05-14 02:01:08.0.3532"
string(26) "2018-05-14 02:01:08.0.3582"
string(26) "2018-05-14 02:01:08.0.3602"
string(26) "2018-05-14 02:01:08.0.3652"
string(26) "2018-05-14 02:01:08.0.3642"
string(26) "2018-05-14 02:01:08.0.3572"
string(26) "2018-05-14 02:01:08.0.3672"
string(26) "2018-05-14 02:01:08.0.3592"
string(26) "2018-05-14 02:01:08.0.3602"
string(26) "2018-05-14 02:01:08.0.3582"
string(26) "2018-05-14 02:01:08.0.3642"