A function that takes a reference for an argument : Parameters « Functions « PHP

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PHP » Functions » Parameters

A function that takes a reference for an argument




<?php

     $my_int = 10;

     print("Before change_value(), \$my_int =" . $my_int . "<br />");

   

     function change_value(&$var) { 

        $var = 15; 

     }

   

     change_value($my_int);

     print("After change_value(), \$my_int = " . $my_int . "<br />");

?>

Related examples in the same category

1.	Functions and References
2.	Declaring a Function with Arguments
3.	Function with default parameters
4.	Passing Variables as a Reference to the Argument of a Function
5.	Passing an Argument to a Function by Value
6.	Using a Function Call to Pass an Argument to a Function by Reference
7.	Declaring a Function That Requires Arguments
8.	Function with an Optional Argument
9.	A Function with an Optional Argument
10.	Accessing Function Parameters
11.	All optional arguments
12.	Capturing a return value
13.	Changing argument values
14.	Defining and Calling a two-argument function,
15.	Function Arguments
16.	Function with two parameters
17.	Creating Functions That Take a Variable Number of Arguments
18.	Creating a capitalize function with a default parameter $each
19.	Default Parameters
20.	Define whether a variable is passed by value or reference
21.	Passing By Reference
22.	Making arguments be passed by reference
23.	Using Optional Parameters

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