PHP 5.3闭包语法的具体讲解

PHP 5.3闭包语法就是一个匿名函数，它可以为开发者带来很多不同的体验。本文就介绍了它的几种使用方法。它与JavaScript的闭包相比稍微有点不同，不过，相对于比如你现在就可以这样使用PHP 5.3闭包语法

1. $closure = function($param) { echo $param; };
3. //This one takes value of someVar and "stores" it in the closure's scope even if
4. //we later change the value of someVar outside it. We assume that $somerVar is defined before this
5. $closure2 = function($param) use ($someVar) { echo $param . ' ' . $someVar; };

比如PHP 5.3闭包语法在输出HTML中闭包很有用：

1. function item_list(array $items, $formatter = null) {
2. //create the default formatter