<!DOCTYPE html>
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<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;
