<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<?php
// 局部变量
$x = 4;
function assignx($y) {
$x = $y;
echo "$x<br>";
}
assignx(0);
echo $x . "<br>";
// 全局变量
$somevar = 15;
function addit() {
global $somevar;
$somevar++;
echo $somevar . "<br>";
}
addit();
// 静态变量
function keep_track() {
static $count = 0;
$count++;
echo $count . '<br>';
}
keep_track();
keep_track();
keep_track();
$links = array("The Apache Web Server" => "www.apache.org",
"Apress" => "www.apress.com");
foreach($links as $title => $link) {
echo "<a href="http://$link">$title</a><br>";
}
?>
</body>
</html>