Question

我从客户那里得到命令，要求使用php curl抓取一个网站。我做了工作，脚本在我的本地主机上运行良好。但是，当我将其提供给客户端脚本时，该脚本无法在其本地主机上运行。

<?php

ini_set('display_errors', 'On');
error_reporting(E_ALL);

print "Cascading https://www.autotrader.ca/cars/on/toronto/?rcp=15&rcs=0&prx=100&prv=Ontario&loc=toronto%2C%20on&hprc=True&wcp=True&sts=New-Used&inMarket=basicSearch&mdl=Accent&make=Hyundai&scrladid=11543266:<p>";

$array = [];
$array[] = "/a/hyundai/accent/oshawa/ontario/19_11543266_/?showcpo=ShowCpo&amp;ncse=no&amp;orup=1_15_340&amp;sprx=100";
$array[] = "/a/hyundai/accent/cambridge/ontario/5_48590586_20200220145456261/?showcpo=ShowCpo&amp;ncse=no&amp;orup=2_15_340&amp;sprx=100";
$array[] = "/a/hyundai/accent/mississauga/ontario/19_11536424_/?showcpo=ShowCpo&amp;ncse=no&amp;orup=3_15_340&amp;sprx=100";

foreach ($array as $key=>$value)
{
    $scrape = "https://www.autotrader.ca".$array[$key];
    print "Scraping $scrape<p>";
    echo "<br>";

    $user_agent = 'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Mobile Safari/537.36';

    $headers = [
        'accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
        'accept-encoding: gzip, deflate, br',
        'accept-language: en-US,en;q=0.9',
        'cache-control: max-age=0',
        'sec-fetch-dest: document',
        'sec-fetch-mode: navigate',
        'sec-fetch-site: none',
        'sec-fetch-user: ?1',
        'upgrade-insecure-requests: 1',
        'user-agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Mobile Safari/537.36',
    ];
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $scrape);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
    curl_setopt($ch, CURLOPT_TIMEOUT, 100);
    curl_setopt($ch, CURLOPT_ENCODING, 1);
    curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_VERBOSE, true);
    // curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Length: 0'));
    curl_setopt($ch, CURLOPT_COOKIEJAR, dirname(__FILE__) . '/cookie.txt');
    curl_setopt($ch, CURLOPT_COOKIEFILE, dirname(__FILE__) . '/cookie.txt');

    $contents = curl_exec($ch);
    
    if ($contents === FALSE){
        echo "Error : ".curl_error($ch);
        echo "<br>";
        print "contents returned for $key = FALSE<br>";
    }

    curl_close($ch);
    
    // echo $contents;

    $start_pos = strpos($contents, "<title>", 0);
    $end_pos = strpos($contents, "</title>", 0);
    $title = substr($contents, $start_pos+7, $end_pos-$start_pos);
    
    print "Listing $key: $title<p>";
    echo "<br>";
    echo "<br>";
}

他还告诉自己，他在未使用curl之前而是在使用其他方法之前正在抓取网站，并且他认为他们已将其请求限制在服务器上，但请注意，他仍然可以在浏览器中访问该网站。我检查了他是否将curl替换为google url，从而能够获得正确的响应。

Answer 1

这里最可能的问题是您的客户端安装的PHP没有安装或启用php-curl扩展。取决于您的操作系统和PHP的安装方式，可以用不同的方法实现，但这是一些常见的情况：

对于 Ubuntu 或其他基于Debian的Linux 发行版：

apt-get install php7.4-curl
systemctl restart apache2

用第一个命令中当前使用的PHP版本替换'7.4'

对于Windows上的WAMP ： How to enable curl in Wamp server

对于Windows上的XAMPP ： How to enable cURL in PHP / XAMPP

Answer 2

在代理后面运行它，工作正常。简化并纠正了一些小错误。

尝试此操作，不要忘记注释/编辑CURLOPT_PROXY行。

<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL);

$array = [
    "/a/hyundai/accent/oshawa/ontario/19_11543266_/?showcpo=ShowCpo&amp;ncse=no&amp;orup=1_15_340&amp;sprx=100",
    "/a/hyundai/accent/cambridge/ontario/5_48590586_20200220145456261/?showcpo=ShowCpo&amp;ncse=no&amp;orup=2_15_340&amp;sprx=100",
    "/a/hyundai/accent/mississauga/ontario/19_11536424_/?showcpo=ShowCpo&amp;ncse=no&amp;orup=3_15_340&amp;sprx=100"
];

foreach ($array as $key => $value) {
    $scrape = "https://www.autotrader.ca" . $value;
    echo "Scraping " . $scrape . "<br>\n";
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $scrape);
    curl_setopt($ch, CURLOPT_PROXY, "http://<proxy_url>:80"); // Comment if not behind a proxy
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_COOKIEJAR, dirname(__FILE__) . '/cookie.txt');
    curl_setopt($ch, CURLOPT_COOKIEFILE, dirname(__FILE__) . '/cookie.txt');
    $contents = curl_exec($ch);

    if (curl_error($ch)) {
        echo "Error : " . curl_error($ch) . "<br>\n";
        break;
    }
    curl_close($ch);

    $title = explode("<title>", $contents);
    $title = explode("</title>", $title[1]);
    $title = $title[0];

    echo "Listing " . $key . ": " . $title . "<br>\n";
    echo "<br>\n";
    echo "<br>\n";
}

php curl在一个本地主机上运行，但在另一个本地主机上不工作

2 个答案:

php curl在一个本地主机上运行，​​但在另一个本地主机上不工作

2 个答案:

php curl在一个本地主机上运行，但在另一个本地主机上不工作