<!DOCTYPE html> <!-- To change this license header, choose License Headers in Project Properties. To change this template file, choose Tools | Templates and open the template in the editor. --> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <?php /** * * @param int $arg */ //&->reference function ChangeValue(&$arg){....} function changeValue($arg) { $arg += 100; } $num = 2; echo $num . "<br/>"; changeValue($num); echo $num; ?> </body> </html>
<?php function changeValue(&$y) { $y = $y + 5; } $myNumber = 8; changeValue($myNumber); echo $myNumber;