The difference between global and reference in a reference pass-php

Source: Internet
Author: User
PHP Reference Delivery

I feel the meaning of both operations is to modify the variables outside the function inside the function Ah, what is the difference?

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The difference between a value in PHP and a pass-through reference
PHP References and global
Using references and Global in PHP
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http://blog.csdn.net/anlukun/article/details/8684668

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