Passing By Reference : Parameters « Functions « PHP

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PHP » Functions » Parameters

Passing By Reference


 

function square1($number) {

            return $number * $number;

    }



    $val = square1($val);



    function square2(&$number) {

            $number = $number * $number;

    }



    square2($val);

Related examples in the same category

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

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