PHP global 关键字实例 - 自学教程(runoops.com)

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PHP global 关键字 实例 - 自学教程(runoops.com)</title>
</head>
<body>
​
    <?php
    $x = 5;
    $y = 10;
​
    function myTest()
    {
        $GLOBALS['y'] = $GLOBALS['x'] + $GLOBALS['y'];
    }
​
    myTest();
    echo $y;
    ?>
​
​
</body>
​
</html>