PHP学习笔记之全局变量演示

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>全局变量演示</title>
</head>


<body>
<?php 
$var = "ddd";


function getVar()
{
global $var;
return $var . "1234567";
}


echo $var . "<hr />";
echo getVar() . "<hr />";


$var2 = "aaa";


function getVar2()
{
return $GLOBALS['var2'] . "1234";
}


echo $var2 . "<hr />";
echo getVar2() . "<hr />";


?>
</body>
</html>
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