测试ArrayAccess

<?php
class tes implements \ArrayAccess{
    public $vari = [];
    public function offsetExists($offset){
		return isset($this->vari[$offset])?true:false;
	}
    public function offsetGet($offset){
		return $this->vari[$offset];
	}
    public function offsetSet($offset, $value){
		$this->vari[$offset] = $value;
	}
    public function offsetUnset($offset){
		unset($this->vari[$offset]);
	}
}
$t = new tes;
$t['s'] = 'aaaaaa';
echo $t['s'];