max_execution 时间限制 php

Posted 2023-02-25

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【中文标题】max_execution 时间限制 php【英文标题】：max_execution time limit php 【发布时间】：2015-01-12 08:42:30 【问题描述】：

过去几天我一直在努力解决一个问题。我有一个网站可以抓取新闻，而且效果很好。然而，最近，我的analyzer_script 遇到了一个问题，因为它似乎超过了我的网络主机设置的时间限制。显然 max_execution 时间大约为 1 分钟，而我的脚本花费的时间比这更长。而且我无法在 php.ini 脚本中调整它，因为我将我的网站托管在公共服务器上。我能做些什么？我需要重写我的脚本吗？

感谢您的帮助！我的脚本如下：

<?php
    $array = array();
    $sub_array = array();
    $analyzer_ids = array();

$res5 = mysqli_query($con,"SELECT id,status FROM statuz ORDER BY id DESC LIMIT 1");
$row5 = mysqli_fetch_array($res5);

$status = $row5['status'];
$status_id = $row5['id'];

if($status == 2) 

    $res1 = mysqli_query($con,"SELECT tag, id FROM tags");
    while($row1 = mysqli_fetch_array($res1)) 
        $tag = $row1['tag'];
        $id = $row1['id'];

        $res2 = mysqli_query($con,"SELECT sub_tag FROM sub_tags WHERE tag_id = '$id'");
        while($row2 = mysqli_fetch_array($res2)) 
            $sub_tag = $row2['sub_tag'];
            $sub_tag = strtolower($sub_tag);
            $sub_array[] = $sub_tag;
        

        $array[] = array('tag_id' => $id, 'tag' => $tag, 'sub_tag' => $sub_array);
        $sub_array = array();
    

    mysqli_query($con,"INSERT INTO analyzer_queue (crawler_id, status)
    (SELECT id,0 FROM crawlers)");

    $initial_res = mysqli_query($con,"SELECT crawler_id,id FROM analyzer_queue WHERE status = '0'");
    while($initial_row = mysqli_fetch_array($initial_res)) 

        $analyzer_id = $initial_row['id'];
        $start_crawler_id = $initial_row['crawler_id'];
        mysqli_query($con,"UPDATE analyzer_queue SET status = '1' WHERE crawler_id = '$start_crawler_id' ORDER BY id DESC LIMIT 1");
        $analyzer_ids[] = $analyzer_id;

                $res = mysqli_query($con,"SELECT cr.title, cr.content, cr.id
                FROM crawler_results cr
                INNER JOIN crawlers c
                ON c.newspaper_id = cr.newspaper_id
                WHERE c.id = '$start_crawler_id'
                AND status = '3'
                LIMIT 10");
                while($row = mysqli_fetch_array($res)) 

                    $article_id = $row['id'];
                    $title = $row['title'];
                    $content = $row['content'];

                    $content = strip_tags($content);
                    $content = strtolower($content);
                    $title = strtolower($title);


                    $count = array();
                    foreach ($array as $tag) 
                        $regex = '/(?:\b' . preg_quote($tag['tag'], '/');
                        foreach ($tag['sub_tag'] as $sub) 
                            $regex .= '\b)|(?:\b' . preg_quote($sub, '/');
                        
                        $regex .= '\b)/i';
                        $count_content = preg_match_all($regex, $content, $count_content);
                        $count_title = preg_match_all($regex, $title, $count_title);
                        $count_total[$tag['tag']] = $count_content + $count_title;
                        $total_count = $count_total[$tag['tag']];

                        $tag_name = $tag['tag'];

                        $res5 = mysqli_query($con,"SELECT id FROM tags WHERE tag = '$tag_name'");
                        $row5 = mysqli_fetch_array($res5);

                        $tag_id = $row5['id'];


                        if($total_count != 0) 
                            mysqli_query($con,"INSERT INTO article_tags (article_id,tag_id,count_tags) VALUES('$article_id','$tag_id','$total_count')");
                        

                        echo$count_total[$tag['tag']];
                        echo"<br /><br />";
                    

                    echo"<pre>";
                    print_r($count_total);
                    echo"</pre>";

                    mysqli_query($con,"UPDATE crawler_results SET status = '2', analyzer_id = '$analyzer_id' WHERE id = '$article_id'");
                
                mysqli_query($con,"UPDATE analyzer_queue SET status = '2' WHERE crawler_id = '$start_crawler_id' ORDER BY id DESC LIMIT 1");

        
        mysqli_query($con,"UPDATE crawler_results SET status = '4' WHERE analyzer_id NOT IN (".implode(',',$analyzer_ids).")");
        mysqli_query($con,"UPDATE statuz SET status = '3' WHERE id = '$status_id'");
        print_r($analyzer_ids);

 else 
    echo"Not ready yet";





?>

【问题讨论】：

使用mysqli 时，您应该使用参数化查询和bind_param 将用户数据添加到您的查询中。请勿使用字符串插值来完成此操作，因为您将创建严重的SQL injection bugs。 【参考方案1】：

试试这个：