PHP7匿名类的用法示例

<?php
/**
 * Created by PhpStorm.
 * User: Itboot
 * Date: 2019/1/17
 * Time: 18:15
 */
class An
{
  private $num;
  protected $age = 15;
  public function __construct() {
    $this- num = 1;
  }
  protected function bar(): int {
    return 10;
  }
  public function drive() {
    return new class($this- num) extends An{
      protected $id;
      public function __construct($num) {
        $this- id = $num;
      }
      public function ea() {
        return $this- id + $this- age + $this- bar();
      }
    };
  }
}
echo (new An())- drive()- ea();

<?php
$fun = function (){
  print '这是匿名函数'. PHP_EOL;
};
$fun();
class Animal
{
  public $num;
  public function __construct(...$args)
  {
    $this- num = $args[0];
  }
  public function getValue($su): int
  {
    return $this- num + $su;
  }
}
$an = new Animal(4);
echo $an- getValue(12) . PHP_EOL;
echo '匿名类'. PHP_EOL;
echo (new class(11) extends Animal{})- getValue(12);