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会MYSQL吗?会,我会把我的信息在数据库里插入删除啦cache Class_Cache.php:
<?php
class cache
{
var $cacheDirectory;
var $cacheDuration=3600;
var $cacheFilename;
function cache($cacheDuration=3600,$cacheDirectory='./cache')
{
$this->cacheDuration = 0;
$this->cacheDirectory = '.';
$this->cacheFilename = '';
$this->updateCache($cacheDuration,$cacheDirectory);
}
function getCacheFilename()
{
return $this->cacheFilename;
}
function updateCache($cacheDuration=3600,$cacheFolder='./cache')
{
$this->cacheDuration = $cacheDuration;
$this->cacheDirectory = $cacheFolder;
$this->_makeCacheFolder();
}
function _makeCacheFolder()
{
/*if (!is_dir($this->cacheDirectory))
{
$temp = explode('/',$this->cacheDirectory);
$cur_dir = '';
for($i=0;$i<count($temp);$i++)
{
$cur_dir .= $temp[$i].'/';
if (!is_dir($cur_dir))
{
if (@mkdir($cur_dir,777)&&($cur_dir!=getcwd()))
{
$this->_writeFile($cur_dir.'.htaccess','Deny from all');
$this->_writeFile($cur_dir.'index.html','');
}
}
}
}*/
if (!is_dir($this->cacheDirectory))
{
$cur_dir=$this->cacheDirectory;
//echo $cur_dir;
if (@mkdir($cur_dir,777))
{
$this->_writeFile($cur_dir.'.htaccess','Deny from all');
$this->_writeFile($cur_dir.'index.html','');
}
}
}
function _writeFile($filename,$contents)
{
if (!file_exists($filename))
{
$fp = @fopen($filename,'w');
if ($fp)
{
fputs($fp,$contents);
fclose($fp);
}
}else{
unlink($filename);
$fp = @fopen($filename,'w');
if ($fp)
{
fputs($fp,$contents);
fclose($fp);
}
}
}
function _setCacheFilename($contents)
{
//$this->cacheFilename = $this->cacheDirectory.'/'.md5($contents).'.txt';
/***********/
global $cache_file;
$this->cacheFilename = $this->cacheDirectory.'/'.$cache_file.'.txt';
/***********/
}
function returnCacheTime()
{
//return "asdfd";
$tim=filemtime($this->cacheFilename);
return date('Y年m月d日 H时i分s秒',$tim);
}
function inCache($contents,$sty='')
{
$this->_setCacheFilename($contents);
if($sty==1)
{
return file_exists($this->cacheFilename);
}else{
if(file_exists($this->cacheFilename))
{
$tim=filemtime($this->cacheFilename);
if((time()-$tim)>$this->cacheDuration)
{
return false;
}else{
return true;
}
}else{
return false;
}
}
}
function readCache()
{
$contents = '';
$fp = @fopen($this->cacheFilename,'r');
if ($fp)
{
while(!feof($fp))
$contents .= fread($fp,4096);
fclose($fp);
}
return $contents;
}
function saveInCache($contents,$filename='')
{
if (trim($filename)=='') $filename = $contents;
if ($this->inCache($filename,1))
{
if((time()-filemtime($this->cacheFilename))>$this->cacheDuration)
{
@unlink($this->cacheFilename);
}
}
$this->_writeFile($this->cacheFilename,$contents);
}
}
?>
cache.php:
<?
require_once("Class_Cache.php");?>
<?
//---------页面缓存----------
$is_cache=1;//是不是缓存
$cache_time=300;//缓存工夫
if ((strstr($script_name,"/member/") == true) || (strstr($script_name,"/common/") == true))
$is_cache=0;
$cacheDirectory=$_SERVER['DOCUMENT_ROOT']."/cache/";
if($_SERVER['QUERY_STRING']=='')
$cache_file=$_SERVER['PHP_SELF'];
else
$cache_file=$_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
if($_SERVER['PHP_SELF']=="/index.php")
$cache_file="___index.php";
$cache_file=preg_replace(array("/\//","/\?/"),array("",""),$cache_file);
//echo $cache_file;
if($is_cache==1)
{
$cache=new cache($cache_time,$cacheDirectory);
if($cache->incache($cache_file))
{
$output=$cache->readcache();
$CacheTime=$cache->returnCacheTime();
unset($cache);
//if( function_exists(return_execute_time()) )
$execute_time=return_execute_time();
$output=str_replace("<!--show_execute_time-->",$execute_time."<br>缓存版本:".$CacheTime,$output);
print($output);
exit;
}else
ob_start();
}
function all_cache()
{
global $is_cache;
global $cache_file;
global $cache;
if($is_cache==1)
{
//这里是输入的内容
$output = ob_get_clean();
ob_end_clean();
$cache->saveInCache($output,$cache_file);
$CacheTime=$cache->returnCacheTime();
unset($cache);
//if( function_exists(return_execute_time()) )
$execute_time=return_execute_time();
$output=str_replace("<!--show_execute_time-->",$execute_time."<br>缓存版本:".$CacheTime,$output);
print($output);
//exit;
}
}
?>
用法
在页面开首援用
<?
require("cache.php")?>
在页面最初加上
<?
all_cache();?>
实践使用http://www.scmetals.com
class_cache类 原贴:http://www.phpx.com/happy/thr83014.html
class_cache.php内容以下
<?php
class cache
{
var $cacheDirectory;
var $cacheDuration=3600;
var $cacheFilename;
function cache($cacheDuration=3600,$cacheDirectory='./cache')
{
$this->cacheDuration = 0;
$this->cacheFilename = '';
$this->cacheDirectory = '.';
$this->updateCache($cacheDuration,$cacheDirectory);
}
function _makeCacheFolder()
{
if (!is_dir($this->cacheDirectory))
{
$temp = explode('/',$this->cacheDirectory);
$cur_dir = '';
for($i=0;$i<count($temp);$i++)
{
$cur_dir .= $temp[$i].'/';
if (!is_dir($cur_dir))
{
if (@mkdir($cur_dir,777)&&($cur_dir!=getcwd()))
{
$this->_writeFile($cur_dir.'.htaccess','Deny from all');
$this->_writeFile($cur_dir.'index.html','');
}
}
}
}
}
function getCacheFilename()
{
return $this->cacheFilename;
}
function _setCacheFilename($contents)
{
$this->cacheFilename = $this->cacheDirectory.'/'.md5($contents).'.txt';
}
function inCache($contents,$sty='')
{
$this->_setCacheFilename($contents);
if($sty==1)
{
return file_exists($this->cacheFilename);
}
else
{
if(file_exists($this->cacheFilename))
{
$tim=filemtime($this->cacheFilename);
if((time()-$tim)>$this->cacheDuration)
{
return false;
}
else
{
return true;
}
}
else
{
return false;
}
}
}
function readCache()
{
$contents = '';
$fp = @fopen($this->cacheFilename,'r');
if ($fp)
{
while(!feof($fp)) $contents .= fread($fp,4096);
fclose($fp);
}
return $contents;
}
function updateCache($cacheDuration=3600,$cacheFolder='./cache')
{
$this->cacheDuration = $cacheDuration;
$this->cacheDirectory = $cacheFolder;
$this->_makeCacheFolder();
}
function saveInCache($contents,$filename='')
{
if (trim($filename)=='') $filename = $contents;
if ($this->inCache($filename,1))
{
if((time()-filemtime($this->cacheFilename))>$this->cacheDuration)
{
@unlink($this->cacheFilename);
}
}
$this->_writeFile($this->cacheFilename,$contents);
}
function _writeFile($filename,$contents)
{
if (!file_exists($filename))
{
$fp = @fopen($filename,'w');
if ($fp)
{
fputs($fp,$contents);
fclose($fp);
}
}
else
{
unlink($filename);
$fp = @fopen($filename,'w');
if ($fp)
{
fputs($fp,$contents);
fclose($fp);
}
}
}
}
?>
工具程序用来显示 Rasmus Lerdorf 的个人履历,以及统计网页流量。 |
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