php

PHP Functions

Passing Parameters to a Functions

Parameters (or arguments as they are more frequently known) can be passed into a function. There are no significant restrictions of the number of arguments which can be passed through to the function. A function can be designed to accept parameters by placing the parameter names inside the parentheses of the function definition.

Those variables can then be accessed from within the function body as follows:

<HTML>
<HEAD>
<TITLE>PHP Function: Passing Parameter
</TITLE></HEAD>
<BODY>
<?php
function sum ($val1, $val2)
{
	$result=$val1+$val2;
    	echo $result;
}
?>
<hr>
 <CENTER><H3>PHP Function: Passing Parameter</H3></CENTER>
<hr>
<p>Sum of 21 and 79 =<?php sum(21,79);?></p>
</BODY>
</HTML>

Type the above script and save it as function-parameter.php and open the page in the browser to view the output.

In the above example the sum () function accepts two parameters as arguments, adds them together and returns the result.