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php 缓存技术实例

Jun 13, 2016 am 09:57 AM
phpkeepExampletechnologyBundledatadocumentarticleyesgeneratecachewant

php 缓存技术实例 本文章要讲的php 缓存技术是讲把数据生成一个临时缓存文件保存到硬盘,然后根据缓存文件设定的时间删除缓存文件再次生成新的缓存文件哦。

php教程 缓存技术实例
本文章要讲的php 缓存技术是讲把数据生成一个临时缓存文件保存到硬盘,然后根据缓存文件设定的时间删除缓存文件再次生成新的缓存文件哦。
*/

$filename = 'cachefile.php';
$str ='echo "bb";';
if( is_file( $filename ) )
{
 $tmp = readcache( $filename ) ;
}
else
{
 createcache( $filename,$str );
}

//写缓存文件

function createcache($filename,$str)
{
 if( $str =='' ){ return false;}
 $fp = fopen($filename,"w+") or die('缓存目录不可能,请设置/www.bKjia.c0m/cache为可写权限!');
 if( ! fwrite($fp,$str) )
 {
  echo '不能创建缓存文件!';
  exit;
 }
 fclose($fp);  
}

//读取缓存文件

function readcache($filename)
{
 $str = file_get_contents($filename);
 if( $str == "" )
 {
  echo "缓存文件读取失败!";
  exit;
 }
 return $str;
}

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*/

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