php ob_start() ob_end_flush()缓存技术简单应用

2024-05-04 21:58:56

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本文章介绍了一个简单的关于php入门篇-缓存技术简单应用,有需要的朋友可以看看,这里是利用了ob_start(); ob_end_flush(); 来实例的,代码如下:

<?php

// define the path and name of cached file

$cachefile = 'cached-files/'.date('M-d-Y').'.php';

// define how long we want to keep the file in seconds. I set mine to 5 hours.

$cachetime = 18000;

// Check if the cached file is still fresh. If it is, serve it up and exit.

if (file_exists($cachefile) && time() - $cachetime < filemtime($cachefile)) {

include($cachefile);

exit;

}

// if there is either no file OR the file to too old, render the page and capture the HTML. //开源代码Vevb.com

ob_start();

?>

<html>

output all your html here.

</html>

<?php

// We're done! Save the cached content to a file

$fp = fopen($cachefile, 'w');

fwrite($fp, ob_get_contents());

fclose($fp);

// finally send browser output

ob_end_flush();

?>