记住用户名密码
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'])){
$cookArray=explode("\t",$_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."\t".$_SERVER['REQUEST_TIME']."\t".(string)((int)$cookArray[2]+1),0,'/');
return (int)$cookArray[2];
}else{
setcookie('refreshTimes',$currentUrl."\t".$_SERVER['REQUEST_TIME']."\t1",0,'/');
return 0;
}
}else{
setcookie('refreshTimes',$currentUrl."\t".$_SERVER['REQUEST_TIME']."\t1",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'; ?>
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