Related issues in PHP

Source: Internet
Author: User
Questions in PHP
There is a definition of a method in the PHP face relative to the idol development:

public static function &object () {

What does &object mean!
Please explain!

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The manual says very detailed reference back

Function test (& $param) {
I just know this thing. Referring to the original variable of $param, if the $param is modified within the function, then the $param original variable will be affected, do not know whether the function reference is a meaning
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