]> git.immae.eu Git - github/shaarli/Shaarli.git/blame - application/Cache.php
Merge pull request #976 from ArthurHoaro/hotfix/url-parentheses
[github/shaarli/Shaarli.git] / application / Cache.php
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1<?php
2/**
3 * Cache utilities
4 */
5
6/**
7 * Purges all cached pages
8 *
9 * @param string $pageCacheDir page cache directory
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10 *
11 * @return mixed an error string if the directory is missing
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12 */
13function purgeCachedPages($pageCacheDir)
14{
15 if (! is_dir($pageCacheDir)) {
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16 $error = 'Cannot purge '.$pageCacheDir.': no directory';
17 error_log($error);
18 return $error;
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19 }
20
aedd62e2 21 array_map('unlink', glob($pageCacheDir.'/*.cache'));
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22}
23
24/**
25 * Invalidates caches when the database is changed or the user logs out.
26 *
27 * @param string $pageCacheDir page cache directory
28 */
29function invalidateCaches($pageCacheDir)
30{
31 // Purge cache attached to session.
32 if (isset($_SESSION['tags'])) {
33 unset($_SESSION['tags']);
34 }
35
36 // Purge page cache shared by sessions.
37 purgeCachedPages($pageCacheDir);
38}