PHP 系列 (三)

cURL 模拟登录

<?php
$data = [
    'email' => 'test@126.com',
    'password' => '123456',
];
// 模拟登录
$cookie = __DIR__ . '/cookie.txt';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// 连接结束后,保存 cookie 信息的文件
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
$result = curl_exec($ch);

// 采集数据
$url = 'http://xxx.com/login';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// 包含 cookie 数据的文件
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie);
$result = curl_exec($ch);
$result = json_decode($result, true, JSON_UNESCAPED_UNICODE);
var_dump($result);

通过 SSH 拷贝远程文件至本地

<?php

class SSH2
{
    /**
     * @var resource
     */
    private $ssh;

    /**
     * SSH2 constructor.
     *
     * @param string $host
     * @param int    $port
     * @param string $username
     * @param string $password
     */
    public function __construct(string $host, int $port, string $username, string $password)
    {
        $this->ssh = ssh2_connect($host, $port);
        ssh2_auth_password($this->ssh, $username, $password);
    }

    /**
     * Exec.
     *
     * @param string $command
     *
     * @return bool|string
     */
    public function exec(string $command)
    {
        $stream = ssh2_exec($this->ssh, $command);
        stream_set_blocking($stream, true);

        return stream_get_contents($stream);
    }

    /**
     * Scp send.
     *
     * @param string   $local
     * @param string   $remote
     * @param int|null $mode
     *
     * @return bool
     */
    public function scpSend(string $local, string $remote, ?int $mode = null)
    {
        return ssh2_scp_send($this->ssh, $local, $remote, $mode);
    }

    /**
     * Scp recv.
     *
     * @param string $remote
     * @param string $local
     *
     * @return bool
     */
    public function scpRecv(string $remote, string $local)
    {
        return ssh2_scp_recv($this->ssh, $remote, $local);
    }
}

try {
    $ip = '192.168.0.77';
    $username = 'root';
    $password = 'root';
    $ssh2 = new SSH2($ip, 22, $username, $password);
    // 打包远程文件
    $ssh2->exec('cd /data/backup && rm -rf backup.zip && zip -r backup.zip ./');
    // 拷贝远程文件至本地
    $ssh2->scpRecv('/data/backup/backup.zip', 'D:\backup\backup.zip');
} catch (Exception $e) {
    exit($e->getMessage());
}

cURL 代理 (GuzzleHttp)

<?php

require_once 'vendor/autoload.php';

try {
    // curl --proxy 127.0.0.1:58591 https://www.google.com/

    $url = 'https://www.google.com/';
    $client = new GuzzleHttp\Client([
        'timeout' => 3
    ]);
    $response = $client->get($url, [
        'curl' => [
            CURLOPT_SSL_VERIFYPEER => 0,
            CURLOPT_SSL_VERIFYHOST => 0,
            CURLOPT_PROXY => '127.0.0.1',
            CURLOPT_PROXYPORT => '58591',
        ]
    ]);
    var_dump(json_decode($response->getBody()->getContents(), true));

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 3);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_PROXY, '127.0.0.1');
    curl_setopt($ch, CURLOPT_PROXYPORT, '58591');
    $result = curl_exec($ch);
    curl_close($ch);
    var_dump(json_decode($result, true));
} catch (Throwable $t) {
    exit($t->getMessage());
}

合并多维数组

<?php
/**
 * 需求：处理多维数组，并以一维数组的显示如下结果
 * A 品牌 => 一组
 * B 品牌 => 一组
 * ...
 * E 品牌 => 二组
 * ...
 */

$brandArray = [];
$brandGroups = [
    '一组' => [
        ['A 品牌'],
        [
            'B 品牌',
            'C 品牌',
        ],
        ['D 品牌'],
    ],
    '二组' => [
        [
            'E 品牌',
            'F 品牌',
        ],
        ['G 品牌'],
    ]
];

// 第一种：foreach - 数组有几个层级，就得遍历几次
foreach ($brandGroups as $groupName => $groups) {
    foreach ($groups as $brands) {
        $brandArray = array_merge($brandArray, array_fill_keys($brands, $groupName));
    }
}

// 第二种：RecursiveIteratorIterator
foreach ($brandGroups as $groupName => $groups) {
    $it = new \RecursiveIteratorIterator(new \RecursiveArrayIterator($groups));
    $brandArray = array_merge($brandArray, array_fill_keys(iterator_to_array($it, false), $groupName));
}

// 第三种：array_walk_recursive
foreach ($brandGroups as $groupName => $groups) {
    $brands = [];
    array_walk_recursive($groups, function ($arr) use (&$brands) {
        $brands[] = $arr;
    });
    $brandArray = array_merge($brandArray, array_fill_keys($brands, $groupName));
}

dd($brandArray);