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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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Release： 2016-06-13 13:22:45
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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

Related labels：
amp function str
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