php閉包實驗

class IArray extends ArrayObject  {      static function make($array)      {          return new self($array);      }function map($func)      {          $res = new self();foreach ($this as $k => $v)   {   $res[$k] = $func($k, $v);          }return $res;      }function filter($func)      {          $res = new self();foreach ($this as $k => $v)   {              if ($func($k, $v))   {                  $res[$k] = $v;             }      }return $res;      }}$nums = array(10,20,30,40);$res = IArray::make($nums)->filter(function($k, $v) { return $v > 15; })->map(function($k, $v) { return $v * 2; });print_r($res);

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