PHP Reference call method Parsing, PHP reference call _php Tutorial

PHP Reference call method Parsing, PHP reference call

This example describes the invocation method for PHP references. Share to everyone for your reference, as follows:

Example 1:

Example 2:

Examples 1 and 2 are the same effect.

Example 3:

Summary: The reference is returned only when the method is defined with the & and the method in front of the method name plus & when it is called.

Example 4:

When $ A and $b are not re-assigned, that is, when a write operation occurs, the same as the $a=& $b, which is equivalent to an assignment reference.

Copies a copy of a value of $ A only when a $ A or $b change occurs

I hope this article is helpful to you in PHP programming.

http://www.bkjia.com/PHPjc/1123839.html www.bkjia.com true http://www.bkjia.com/PHPjc/1123839.html techarticle PHP refers to the invocation method analysis, PHP reference calls the example of this article describes the method of invoking the PHP reference. Share to everyone for reference, as follows: Example 1:function Test ($arr) {} e ...

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