PHP $GLOBALS 实例 - 自学教程(runoops.com)

xxxxxxxxxx
 
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PHP $GLOBALS 实例 - 自学教程(runoops.com)</title>
</head>
<body>
​
<?php 
$x = 75; 
$y = 25;
 
function addition() 
{ 
    $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y']; 
}
 
addition(); 
echo $z; //输出：100
?>
​
</body>
​
</html>