掌握 PHP 和 MySQL：现代开发人员的详尽指南

  // jit configuration (conceptual, in php.ini)
  opcache.enable = 1
  opcache.jit = 1255

  #[route('/api', methods: ['get'])]
  public function apimethod() { /*...*/ }

  class user {
      public function __construct(
          public string $name,
          public int $age,
          public string $email
      ) {}
  }

  $result = match ($input) {
      1 => 'one',
      2 => 'two',
      default => 'other',
  };

  class user {
      public function __construct(
          public readonly string $email
      ) {}
  }

  ; enable opcache in php.ini
  opcache.enable=1
  opcache.memory_consumption=256
  opcache.interned_strings_buffer=16
  opcache.max_accelerated_files=10000
  opcache.revalidate_freq=2

  // xdebug profiling (conceptual)
  xdebug_start_profiler();
  // code to profile
  xdebug_stop_profiler();

  require 'vendor/autoload.php';
  use react\eventloop\factory;

  $loop = factory::create();

  $email = filter_var($_post['email'], filter_sanitize_email);
  if (!filter_var($email, filter_validate_email)) {
      throw new exception("invalid email format");
  }

  $stmt = $pdo->prepare("select * from users where email = :email");
  $stmt->execute(['email' => $email]);

  session_start([
      'cookie_secure' => true,
      'cookie_httponly' => true,
      'cookie_samesite' => 'strict'
  ]);

  header("content-security-policy: default-src 'self'");

  explain select * from orders where status = 'shipped';

  create index idx_status on orders(status);

  create table orders_2024 like orders;
  alter table orders partition by range (year(order_date)) (
      partition p2024 values less than (2025),
      partition p2025 values less than (2026)
  );

  -- configure replication (conceptual)
  change master to master_host='master_host', master_user='replica_user', master_password='password';

  -- example of encrypting data
  create table secure_data (
      id int auto_increment primary key,
      encrypted_column varbinary(255)
  );

  grant select, insert on my_database.* to 'user'@'host';

  mysqldump -u root -p my_database > backup.sql

  class userdto {
      public string $name;
      public int $age;
      public string $email;
  }

  try {
      $pdo = new pdo($dsn, $user, $pass);
  } catch (pdoexception $e) {
      echo "database error: " . $e->getmessage();
  }

  header('content-type: application/json');
  echo json_encode(['status' => 'success', 'data' => $data]);

  // graphql query example (conceptual)
  query {
      user(id: 1) {
          name
          email
      }
  }

  // rabbitmq example (conceptual)
  $channel->basic_publish($message, 'exchange', 'routing_key');

  composer require vendor/package

  phpunit --configuration phpunit.xml

  // example entity (conceptual)
  /** @entity */
  class user {
      /** @id @generatedvalue @column(type="integer") */
      public int $id;
      /** @column(type="string") */
      public string $name;
  }

  from php:8.1-fpm
  run docker-php-ext-install pdo_mysql

  # github actions example
  name: ci

  on: [push]

  jobs:
    build:
      runs-on: ubuntu-latest
      steps:
        - name: checkout code
          uses: actions/checkout@v2
        - name: set up php
          uses: shivammathur/setup-php@v2
          with:
            php-version: '8.1'
        - name: run tests
          run: phpunit

  # Example command for setting up New Relic (conceptual)
  newrelic-admin run-program php myscript.php