PHP Function Parameter

In this chapter you will learn:

1. What is PHP Function Parameter
2. Syntax for PHP Function Parameter
3. Example - Add parameter to a function

Description

PHP functions can optionally accept one or more arguments, which are values passed to the function.

A parameter is a variable that holds the value passed to it when the function is called.

Syntax

To specify parameters for your function, insert one or more variable names between the parentheses, as follows:

function myFunc( $oneParameter, $anotherParameter,... ) { 
  // (do stuff here) 
}  

Example

We need to give each parameter a name to refer to it inside the function. PHP will copy the values it receives into these parameters:

<?PHP//j a  va2 s .co m
function multiply($num1, $num2) { 
        $total = $num1 * $num2; 
        print $num1;
        print "\n";
        print $num2;
        return $total; 
} 
$mynum = multiply(5, 10); 
echo $mynum;
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. What is PHP Function Default Parameters
2. Syntax for PHP Function Default Parameters
3. Example - Create and use default parameter

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PHP Function Parameter

PHP Function Default Parameters

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PHP Function Reference Parameter

PHP Function Return

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PHP Global Variables

PHP Recursive Functions

PHP Anonymous Function

PHP static variable