<?php
class Cache_File {
var $filename;
var $tempfilename;
var $expriration;
var $fp;
var $cachedir = '/cache';
function Cache_File($file, $exp=false) {
$this->filename = $file;
$this->expiration = $exp;
}
function getLoc() {
return "{$this->cachedir}/{$this->filename}";
}
function begin() {
$this->tempfilename = $this->cachedir . '/' .
$this->filename . '.' .
getmypid();
$this->fp = fopen($this->tempfilename, "w");
if ($this->fp === false) {
return false;
}
ob_start();
}
function end() {
$buffer = ob_get_contents();
ob_end_flush();
if(strlen($buffer)) {
fwrite($this->fp, $buffer);
fclose($this->fp);
rename($this->tempfilename, $this->getLoc());
return true;
}
else {
fclose($this->fp);
unlink($this->tempfilename);
return false;
}
}
function put($buffer) {
$this->fp = fopen($this->tempfilename, "w");
if ($this->fp === false) {
return false;
}
fwrite($this->fp, $buffer);
fclose($this->fp);
rename($this->tempfilename, $this->getLoc());
return true;
}
function get() {
$filename = $this->getLoc();
if($this->expiration) {
$stat = @stat($filename);
if($stat[9]) {
if(time() > $stat[9] + $this->expiration) {
unlink($filename);
return false;
}
}
}
return @file_get_contents($filename);
}
}
?>
