PHP: Cache a tidy parsed string
At the top of my pa开发者_运维问答ge I have this piece of code to check cache and initiate output buffering:
ob_start( );
$cache_time = 3600;
$cache_folder = $_SERVER['DOCUMENT_ROOT'].'/cache';
$cache_filename = $cache_folder.md5($_SERVER['REQUEST_URI']);
$cache_created = (file_exists($cache_filename)) ? filemtime($cache_filename->filename) : 0;
if ((time() - $cache_created) < $cache_time) {
readfile($cache_filename);
die();
}
Then at the bottom I use this to tidy the output buffer and cache the page, but it nothing appears to be cached...
$html = ob_get_clean();
$config = array('indent' => TRUE,
'drop-empty-paras' => FALSE,
'output-xhtml' => TRUE,
'quote-ampersand' => TRUE,
'indent-cdata' => TRUE,
'tidy-mark' => FALSE,
'wrap' => 200);
$tidy = tidy_parse_string($html, $config, 'UTF8');
file_put_contents($cache_filename, $tidy);
echo $tidy;
Anyone know what to do?
There were some errors in your code:
- $cache_filename is a string, not an object
- the $tiny()-object can't be simply put into a file - you need to take the value
I fixed them like so, taking the example of the php manual page:
<?php
$cache_time = 10;
$cache_folder = '/tmp/';
$cache_filename = $cache_folder.md5($_SERVER['REQUEST_URI']);
$cache_created = (file_exists($cache_filename)) ? filemtime($cache_filename) : 0;
var_dump(time() - $cache_created);
if ((time() - $cache_created) < $cache_time) {
readfile($cache_filename);
exit();
}
?>
<?php
ob_start();
?>
<html>
<head>
<title>test</title>
</head>
<body>
<p>error<br>another line</i>
</body>
</html>
<?php
$buffer = ob_get_clean();
$config = array('indent' => TRUE,
'output-xhtml' => TRUE,
'wrap' => 200);
$tidy = tidy_parse_string($buffer, $config, 'UTF8');
$tidy->cleanRepair();
file_put_contents($cache_filename, $tidy->value);
echo $tidy;
?>
加载中,请稍侯......
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