Simple PHP cache design implementation code_PHP tutorial

Copy code The code is as follows:

//This function mainly uses the file modification time function filemtime and now Time is subtracted to determine whether to update the content.
$cahetime=2;//Set expiration time
$cahefile="cahe.txt";//Read and write text

if(file_exists($cahefile) && time()-$cahetime< ; filemtime($cahefile)){

echo file_get_contents($cahefile);
}
else {
file_put_contents($cahefile,date("y-m-d H:i:s",time ()));
}
?>

http://www.bkjia.com/PHPjc/324401.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/324401.htmlTechArticleCopy the code as follows: ?php //This function mainly uses the file modification time function filemtime to subtract the current time Determine whether to update content. $cahetime=2;//Set the expiration time $cah...