PHP Code Snippet

# https://github.com/illuminate/database/blob/master/README.md
$capsule = new Capsule();
$capsule->addConnection($this->dbConfig);
$capsule->setAsGlobal();
// Setup the Eloquent ORM... (optional; unless you've used setEventDispatcher())
$capsule->bootEloquent();
$capsule->getDatabaseManager()->extend('mongodb', function ($config, $name) {
    $config['name'] = $name;

    return new \Jenssegers\Mongodb\Connection($config);
});

# 查看 PHP 编译时的参数
php -r "phpinfo();" | grep configure

# 查看 .ini 配置文件路径
php --ini
php -r "phpinfo();" | grep "Configuration File"

# 查看 Modules
php -m

# 显示扩展配置
php --ri gd

# 检查扩展是否存在
php --re decimal

# 交互式运行模式。具有函数、常量、类名、变量、静态方法调用和类常量的 `tab` 补全功能
# http://php.net/manual/en/features.commandline.interactive.php
php -a

php -r "echo ini_get('memory_limit');"

php -r "phpinfo();" | grep memory

memory_limit = 1024M;

// 临时设置最大内存占用
ini_set('memory_limit', '1024M');
// 设置脚本最大执行时间为 0 永不过期
set_time_limit(0);

vim php-fpm.conf

;rlimit_files = 1024
rlimit_files = 4096

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

    "config": {
        "disable-tls": true,
        "gitlab-domains": [],
        "optimize-autoloader": true,
        "preferred-install": {
            "*": "dist"
        }
        "secure-http": false,
        "sort-packages": true,
    },
    "repositories": [
        {
            "type": "cvs",
            "url": "..."
        },
        {
            "type": "composer",
            "url": "https://mirrors.tencent.com/composer/"
        },
        {
            "type": "composer",
            "url": "https://mirrors.aliyun.com/composer/"
        },
        {
            "type": "composer",
            "url": "https://asset-packagist.org"
        }
    ]

composer require hellogerard/jobby --ignore-platform-reqs

which composer
# /usr/local/bin/composer

{正确的 PHP 版本}/bin/php /usr/local/bin/composer require hellogerard/jobby

/usr/local/opt/php@7.1/bin/php -d memory_limit=-1 /usr/local/bin/composer update -vvv

php -d memory_limit=-1 /usr/local/bin/composer update

composer update --lock

brew tap shivammathur/php

brew install shivammathur/php/php@8.1 -vvv

brew link --overwrite --force shivammathur/php/php@8.1
php -v

brew untap shivammathur/php

function getRealClientIP(): string
{
    // List of headers to check for IP address
    $ipHeaders = [
        'HTTP_CLIENT_IP',
        'HTTP_X_FORWARDED_FOR',
        'HTTP_X_FORWARDED',
        'HTTP_X_CLUSTER_CLIENT_IP',
        'HTTP_FORWARDED_FOR',
        'HTTP_FORWARDED',
        'REMOTE_ADDR'
    ];

    foreach ($ipHeaders as $header) {
        if (!empty($_SERVER[$header])) {
            // Split for multiple IP addresses
            $ips = explode(',', $_SERVER[$header]);
            // Return the first non-empty value
            foreach ($ips as $ip) {
                $ip = trim($ip);
                if (filter_var($ip, FILTER_VALIDATE_IP,
                    FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
                    return $ip;
                }
            }
        }
    }

    // Fallback to REMOTE_ADDR if no valid IP found
    return $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
}

class Test1{
  public function __construct(){
    echo "Test1<br>";
  }
}

// 方法一
$class1 = "Test1";
new $class1();

// 方法二
$class2 = "Test2";
// 建立类的反射
$class2 = new ReflectionClass($class2);
// 相当于实例化类
$instance = $class2->newInstance();

class Foo {
   public const WHEELER = [
      'car' => 4,
      'bike' => 2,
   ];
}
/**
 * @param key-of<Foo::WHEELER> $type
 * @param value-of<Foo::WHEELER> $wheels
 */
function repair(string $type, int $wheels): void
{
    // $type is 'bike'|'car'
    // $wheels is 2|4
}
repair("bus", 2);
// Parameter #1 $type of function repair expects 'bike'|'car', 'bus' given.