使用cURL从PHP触发页面脚本的最快方法，不要等待响应

Question

Right now I am using cURL and something like that:

foreach ($urls as $url) {

    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url ); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_exec($ch);

}

to trigger a php script on a remote server.

My thing is I just want to trigger that script and doesn't care at all what it returns and I want to trigger another address that is in my loop.

So, how can I eliminate waiting for the response and just trigger the scripts on the servers (I have about 200 urls in my array I need to loop through and trigger each of these urls).

So, basically I want just to trigger the script and move to the next one and don't care what it returns.

And another concern of mine is that if I can move the curl_init() outside of the loop like that:

$ch = curl_init(); 

foreach ($urls as $url) {

    curl_setopt($ch, CURLOPT_URL, $url ); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_exec($ch);

}

If there is a faster way how to achieve this without using cURL, please let me know. I just need to trigger 100 scripts on remote servers from one loop inside one file.

Answer 1

<?php
$fp = fsockopen("mesela.dom", 80, $errno, $errstr, 30);
if (!$fp) {
    echo "$errstr ($errno)<br />\n";
} else {
    $out = "GET / HTTP/1.1\r\n";
    $out .= "Host: mesela.dom\r\n";
    $out .= "Connection: Close\r\n\r\n";
    fwrite($fp, $out);
    fclose($fp);
}
?>

Answer 2

You can use a queue system with your code adding these URLs to be called as jobs and multiple workers doing the CURL calls.

This will make your code asynchronous ( not wait for response from the curl call).

A good PHP library you can use https://github.com/chrisboulton/php-resque

Answer 3

curl multi

<?php
    function setcurloptions( $handle=false, $url=false, $cacert=false ){
        if( $handle && $url ){
            if( parse_url( $url, PHP_URL_SCHEME )=='https' ){
                curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, FALSE );
                curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, 2 );
                curl_setopt( $handle, CURLOPT_CAINFO, realpath( $cacert ) );
            }
            curl_setopt( $handle, CURLOPT_URL, $url );
            curl_setopt( $handle, CURLOPT_HEADER, false );
            curl_setopt( $handle, CURLOPT_FRESH_CONNECT, true );
            curl_setopt( $handle, CURLOPT_FORBID_REUSE, true );
            curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
            curl_setopt( $handle, CURLOPT_CLOSEPOLICY, CURLCLOSEPOLICY_OLDEST );
            curl_setopt( $handle, CURLOPT_BINARYTRANSFER, true );
            curl_setopt( $handle, CURLOPT_AUTOREFERER, true );
            curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, 30 );
            curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
            curl_setopt( $handle, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT'] );
        }
    }


    $cacert='c:/wwwroot/cacert.pem';
    $urls=array(
        'http://www.example.com',
        'http://www.example.com',
        'http://www.example.com'
    );

    $multi = curl_multi_init();
    $handles = array();


    foreach( $urls as $i => $url ){
        $handle = curl_init();
        setcurloptions( $handle, $url, $cacert );
        curl_multi_add_handle( $multi, $handle );
        $handles[]=$handle;
    }


    $active=null;
    do {
        $mrc = curl_multi_exec( $multi, $active );
        usleep(100);
    } while( $mrc == CURLM_CALL_MULTI_PERFORM );


    while( $active && $mrc == CURLM_OK ) {
        if( curl_multi_select( $multi ) != -1 ) {
            do {
                $mrc = curl_multi_exec( $multi, $active );
            } while( $mrc == CURLM_CALL_MULTI_PERFORM );
        }
        usleep( 100 );
    }


    foreach( $handles as $i => $handle ){
        /*
        if you want to do something at all with response 
        $response=curl_multi_getcontent( $handle );
        */
        curl_multi_remove_handle( $multi, $handle );
        curl_close( $handle );
        usleep(100);
    }



    curl_multi_close( $multi );
?>