文件缓存

不多说，看代码

Head.php

<?php
define('CACHE_EXPIRE',1800);  //设置过期时间
define('CACHE_PATH',$_SERVER['DOCUMENT_ROOT'].'/cache/'); //设置缓存目录
define('REFRESH_EXPIRE',10);  
is_dir(CACHE_PATH) or mkdir(CACHE_PATH,0777);

//该方法是获得用户的刷新次数，如果用户连续两次刷新，那么就显示最新内容
function refreshTimes(){
    $currentUrl='http://'.$_SERVER["HTTP_HOST"].$_SERVER['REQUEST_URI'];
    if(isset($_COOKIE['refreshTimes'])){
        $cookArray=explode("	",$_COOKIE['refreshTimes']);
        if(isset($cookArray[1]) and $_SERVER['REQUEST_TIME'] - (int)$cookArray[1] < REFRESH_EXPIRE and isset($cookArray[0]) and $cookArray[0] == $currentUrl){
            setcookie('refreshTimes',$currentUrl."	".$_SERVER['REQUEST_TIME']."	".(string)((int)$cookArray[2]+1),0,'/');
            return (int)$cookArray[2];
        }else{
            setcookie('refreshTimes',$currentUrl."	".$_SERVER['REQUEST_TIME']."	1",0,'/');
        return 0;
        }
    }else{
        setcookie('refreshTimes',$currentUrl."	".$_SERVER['REQUEST_TIME']."	1",0,'/');
        return 0;
    }
}
 
$key = md5($_SERVER['REQUEST_URI']);
$path = CACHE_PATH.$key;

if(is_file($path)
 and filemtime($path)+CACHE_EXPIRE > $_SERVER['REQUEST_TIME']
 and refreshTimes() == 0
 ){
    readfile($path);
    exit();
}

ob_start();
?>

foot.php

<?php

$html = ob_get_contents();
ob_clean();

file_put_contents($path,$html);

echo $html;

?>

test.php

<?php
include 'head.php';

$title = "Hello world~";
?>
<!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=gb2312" />
<title><?php echo $title?></title>
</head>

<body>
<?php
echo "是大方大方";
?>
</body>
</html>
<?php
include 'foot.php';
?>

//其他看到的很全的php文件缓存

看http://www.cnblogs.com/coolid/archive/2012/09/14/2684373.html 链接

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原文地址：https://www.cnblogs.com/zhenghongxin/p/5282489.html