代码之家 › 专栏 › 技术社区 › Brian Bruman

从外部PHP类返回用于If条件的值

oop php

2

Brian Bruman · 技术社区 · 7 年前

仍在学习OOP编程,但我正在使用 proxy-scraper

test.php 我希望从外部php文件中的类返回变量的脚本:

<?php

use GuzzleHttp\Client as GuzzleClient;
use Vantoozz\ProxyScraper\HttpClient\GuzzleHttpClient;
use Vantoozz\ProxyScraper\Scrapers;

$scraper = new Scrapers\HideMyIpScraper($httpClient);

foreach ($scraper->get() as $proxy2) {

    $proxyexplode = explode(':', $proxy2);
    $ipv4proxy = (string)$proxyexplode [0];
    $portproxy = (int)$proxyexplode [1];

    $proxy = new Proxy(new Ipv4($ipv4proxy), new Port($portproxy));

}

现在,它与本地主机上的文件交互 Scrapers/HideMyIpScraper.php . 可以查看整个php文件 here

无论何时 $proxy

/**
 * @return \Generator|Proxy[]
 * @throws \Vantoozz\ProxyScraper\Exceptions\ScraperException
 */
public function get(): \Generator
{
    try {
        $html = $this->httpClient->get($this->makeUrl());
    } catch (HttpClientException $e) {
        throw new ScraperException($e->getMessage(), $e->getCode(), $e);
    }

    foreach ($this->extractData($html) as $item) {

        $countrycode = $item['c']['f'];
        var_dump($countrycode);

        if (!\is_array($item)) {
            continue;
        }
        try {
            yield $this->makeProxy($item);
        } catch (InvalidArgumentException $e) {
            continue;
        }
    }
}

我在上面添加的唯一内容是 $countrycode = $item['c']['f'];

test.php 在 foreach 循环,所以是这样的

$array = array();
foreach ($scraper->get() as $proxy2) {
    $proxy = new Proxy(new Ipv4($ipv4proxy), new Port($portproxy));
    // $countrycode is var_dumped here from `HideMyIpScraper.php`
    if ($countrycode == 'us') {
        $array[] = $proxy2;
    }

但当然 $countrycode 在另一个php文件的外部函数中,因此这是无效的,并抛出一个错误。

return $countrycode 但这打破了传统 foreach ($this->extractData($html) as $item) { 在第一次迭代后循环。

我怎样才能拿到票 $countrycode 变量在我的 test.php 条件逻辑脚本?

1 回复 | 直到 7 年前

1

2

Barmar 7 年前

从生成器返回包含代理和国家/地区代码的数组。

public function get(): \Generator
{
    try {
        $html = $this->httpClient->get($this->makeUrl());
    } catch (HttpClientException $e) {
        throw new ScraperException($e->getMessage(), $e->getCode(), $e);
    }

    foreach ($this->extractData($html) as $item) {

        $countrycode = $item['c']['f'];
        var_dump($countrycode);

        if (!\is_array($item)) {
            continue;
        }
        try {
            yield array($this->makeProxy($item), $countrycode);
        } catch (InvalidArgumentException $e) {
            continue;
        }
    }
}

然后将结果分成两部分 foreach 环

$array = array();
foreach ($scraper->get() as $val) {
    list ($proxy2, $countrycode) = $val;
    $proxy = new Proxy(new Ipv4($ipv4proxy), new Port($portproxy));
    // $countrycode is var_dumped here from `HideMyIpScraper.php`
    if ($countrycode == 'us') {
        $array[] = $proxy2;
    }