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在函数定义时函数明前加个&是什么意思啊解决方法

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WBOYOriginal
2016-06-13 10:34:281167browse

在函数定义时函数明前加个&是什么意思啊?
举个例子function &segment($str, $cb = ''){}。其中的&有什么用啊,代表什么?

------解决方案--------------------
function &segment($str, $cb = ''){}
& 表示函数segment可以返回引用

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