PHP7匿名类用法分析

<?php
/
  Created by PhpStorm.
  User: bee
  Date: 2016/4/24
  Time: 00:17
 /
echo '匿名函数';
$anonymous_func = function(){return 'function';};
echo $anonymous_func();
echo '<br>';
echo '<hr>';
class mon {
  public $default = 10;
  function __construct($key){
    $this->getVal($key);
  }
  public function getVal(int $i):int{
    $this->default += $i;
    return $this->default+0.1;
  }
}
echo '有名函数';echo '<br>';
$ = new mon(1);
echo $->getVal(2.2).'--';
echo $->getVal(2.2).'--';
echo (new mon(1))->getVal(8.9);
echo '<hr>';echo '匿名类';
//定义匿名类需继承
echo (new class(1) extends mon{})->getVal(90);echo '<br>';
echo (new class(2) extends mon{})->getVal(90);

<?php
class Outer
{
  private $prop = 1;
  protected $prop2 = 2;
  protected function func1()
  {
    return 3;
  }
  public function func2()
  {
    return new class($this->prop) extends Outer {
      private $prop3;
      public function __construct($prop)
      {
        $this->prop3 = $prop;
      }
      public function func3()
      {
        return $this->prop2 + $this->prop3 + $this->func1();
      }
    };
  }
}
echo (new Outer)->func2()->func3();//6

<?php
/
  Created by PhpStorm.
  User: bee
  Date: 2016/4/24
  Time: 1:51
 /
$arr = array();
for ($i=0; $i<3; $i++){
  $arr[] = new class($i){
    public $index=0;
    function __construct($i)
    {
      $this->index = $i;
      echo 'create</br>';
    }
    public function getVal(){
      echo $this->index;
    }
  };
}
$arr[2]->getVal();
echo '<br>';
var_dump($arr[1]);