一、JAVASCRIPT：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()输出：

ab二、PHP：代码：

<?phpclass 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;输出：

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