$arg = ‘text‘;
$test = function () use ($arg){
var_dump($arg);
};
$test();
//输出text
$arg = ‘text‘;
$test = function () use ($arg){
var_dump($arg);
$arg = ‘text2‘;
};
$test(); //输出text
$arg = ‘text3‘;
$test(); //输出text
php【闭包语法】function() use ($arg) {}
原文：http://www.cnblogs.com/wy04313/p/6186465.html