javascript与php单例模式

一、JAVASCRIPT：

1. 代码：

   var test = function (){ this.str = '', this.a = function (){ this.str += "a" return this }, this.b = function(){ this.str += "b" return this } this.out = function(){ console.log(this.str) } } var entity = new test() entity.a().b().out()

2. 输出：

   ab

   二、PHP：

3. 代码：

   <?php class single{ public $out; public function a($a){ $this->out .= $a; return $this; } public function b($b){ $this->out .= $b; return $this; } public function say(){ echo $this->out.PHP_EOL; } public function get(){ return $this->out; } } $single = new single(); $out = $single->a('a')->b('b')->say(); $get = $single->a('a')->b('b')->get(); echo $get;

4. 输出：

   ab abab