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！声明函数时，函数名前面带个&是什么意思？

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Release： 2016-06-13 11:43:19
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求助！声明函数时，函数名前面带个&是什么意思？？？

本帖最后由 zx11307 于 2013-12-24 17:57:24 编辑 如题所述：
例如
<br />function &ret_ref(){<br />$var="php";<br />return $var;<br />}<br />$v=&ret_ref();
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函数前面带&和不带&有什么区别么？为什么要加个&

Related labels：
amp nbsp ref var
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