Question

我最近从Ubuntu 12.10升级到14.04。随着升级，PHP从5.3变为5.5。我的一个应用程序使用PHP和Pete Warden编写的ParallelCurl类。不幸的是，根据他的网站，该课程的最后一次更新是在2年前。

升级之后，当我运行我的脚本时，每个请求都会出现在私有函数waitForOutstandingRequestsToDropBelow（$ max）的无限循环中。任何人都可以看到升级导致此问题的原因吗？

parallelcurl.php

<?php
class ParallelCurl {

public $max_requests;
public $options;

public $outstanding_requests;
public $multi_handle;

public function __construct($in_max_requests = 10, $in_options = array()) {
    $this->max_requests = $in_max_requests;
    $this->options = $in_options;

    $this->outstanding_requests = array();
    $this->multi_handle = curl_multi_init();
}

//Ensure all the requests finish nicely
public function __destruct() {
    $this->finishAllRequests();
}

// Sets how many requests can be outstanding at once before we block and wait for one to
// finish before starting the next one
public function setMaxRequests($in_max_requests) {
    $this->max_requests = $in_max_requests;
}

// Sets the options to pass to curl, using the format of curl_setopt_array()
public function setOptions($in_options) {

    $this->options = $in_options;
}

// Start a fetch from the $url address, calling the $callback function passing the optional
// $user_data value. The callback should accept 3 arguments, the url, curl handle and user
// data, eg on_request_done($url, $ch, $user_data);
public function startRequest($url, $callback, $user_data = array(), $post_fields=null) {

    if( $this->max_requests > 0 )
        $this->waitForOutstandingRequestsToDropBelow($this->max_requests);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt_array($ch, $this->options);
    curl_setopt($ch, CURLOPT_URL, $url);

    if (isset($post_fields)) {
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
    }

    curl_multi_add_handle($this->multi_handle, $ch);

    $ch_array_key = (int)$ch;

    $this->outstanding_requests[$ch_array_key] = array(
        'url' => $url,
        'callback' => $callback,
        'user_data' => $user_data,
    );

    $this->checkForCompletedRequests();
}

// You *MUST* call this function at the end of your script. It waits for any running requests
// to complete, and calls their callback functions
public function finishAllRequests() {
    $this->waitForOutstandingRequestsToDropBelow(1);
}

// Checks to see if any of the outstanding requests have finished
private function checkForCompletedRequests() {

    // Call select to see if anything is waiting for us
    if (curl_multi_select($this->multi_handle, 0.0) === -1)
        return;

    // Since something's waiting, give curl a chance to process it
    do {
        $mrc = curl_multi_exec($this->multi_handle, $active);
    } while ($mrc == CURLM_CALL_MULTI_PERFORM);

    // Now grab the information about the completed requests
    while ($info = curl_multi_info_read($this->multi_handle)) {

        $ch = $info['handle'];
        $ch_array_key = (int)$ch;

        if (!isset($this->outstanding_requests[$ch_array_key])) {
            die("Error - handle wasn't found in requests: '$ch' in ".
                print_r($this->outstanding_requests, true));
        }

        $request = $this->outstanding_requests[$ch_array_key];

        $url = $request['url'];
        $content = curl_multi_getcontent($ch);
        $callback = $request['callback'];
        $user_data = $request['user_data'];

        call_user_func($callback, $content, $url, $ch, $user_data);

        unset($this->outstanding_requests[$ch_array_key]);

        curl_multi_remove_handle($this->multi_handle, $ch);
    }

}

// Blocks until there's less than the specified number of requests outstanding
private function waitForOutstandingRequestsToDropBelow($max)
{
    while (1) {
        $this->checkForCompletedRequests();
        if (count($this->outstanding_requests)<$max)
            break;

        usleep(10000);
    }
}

}


?>

从PHP 5.3升级到5.5后，ParallelCurl不再工作

0 个答案: