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学习PHP5.3的闭包:function()use(&$param)

时间：2021-07-01 10:21:17 帮助过：19人阅读

function closureCreater(){
$x =1;
return function($fun=null) use(&$x){//按引用传值
echo "
".$x++;
$fun and $fun();
};
}
$x = "hello world";
$test = closureCreater();
$test();
$test(function(){ echo "closure test one"; });
$test(function(){ echo "closure test two"; });
$test(function() use($x){ echo "
".$x;});
//将函数保存为数组元素
$x = 'outer param.';
$arr = array();
$arr[] = function($str)use($x){ return $str.$x; };
echo $arr[0]('test fun in arr,'); //test fun in arr,outer param.
?>

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