| 1 | <?php
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| 2 | /*
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| 3 | Plugin Name: Simple Cache
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| 4 | Version: 1.0
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| 5 | Plugin URI:
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| 6 | Description: Simple set of caching functions. Useful for plugin authors to build off of.
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| 7 | Author: Jeff Minard
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| 8 | Author URI: http://creatimation.net/
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| 9 | */
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| 10 |
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| 11 |
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| 12 | define(CACHE_DIR, ABSPATH . 'wp-content/simple-cache');
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| 13 |
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| 14 | if ( !file_exists(CACHE_DIR) ) {
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| 15 | //ack, no cache dir created - try to make one
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| 16 | if ( is_writable( dirname(CACHE_DIR) ) ) {
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| 17 | // parent folder is writeable, try to make a dir.
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| 18 | $dir = @mkdir( CACHE_DIR, 0666);
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| 19 | if($dir == false) {
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| 20 | // tried to make cache folder and failed.
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| 21 | die("Your cache directory (<code>" . CACHE_DIR . "</code>) needs and be writable for this plugin to work. Double-check it. <a href='" . get_settings('siteurl') . "/wp-admin/plugins.php?action=deactivate&plugin=simple-cache.php'>Deactivate the Simple Cache plugin</a>.");
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| 22 | }
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| 23 | } else {
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| 24 | // parent is unwrite able, and we have no chache folder.
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| 25 | die("The simple-cache plugin cache directory (<code>" . CACHE_DIR . "</code>) needs to exist and be writable for this plugin to work. Double-check it. <a href='" . get_settings('siteurl') . "/wp-admin/plugins.php?action=deactivate&plugin=simple-cache.php'>Deactivate the Simple Cache plugin</a>.");
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| 26 | }
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| 27 | }
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| 28 |
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| 29 |
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| 30 | function cache_recall($func_call, $stale_age=15) {
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| 31 |
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| 32 | $filename = CACHE_DIR . md5($func_call) . '.txt';
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| 33 |
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| 34 | if( !file_exists($filename) ) {
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| 35 | // this function call has not been cached before
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| 36 | return false;
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| 37 | }
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| 38 |
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| 39 | if ( filemtime($filename) < strtotime("$stale_age minutes ago") ) {
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| 40 | // file contents are too old!
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| 41 | return false;
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| 42 | }
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| 43 |
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| 44 | $cached_content = file_get_contents($filename);
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| 45 |
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| 46 | return $cached_content;
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| 47 |
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| 48 | }
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| 49 |
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| 50 | function cache_store($func_call, $content) {
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| 51 |
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| 52 | $filename = CACHE_DIR . md5($func_call) . '.txt';
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| 53 |
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| 54 | if (!$handle = @fopen($filename, 'w')) {
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| 55 | // Can't open file?
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| 56 | return false;
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| 57 | }
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| 58 |
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| 59 | if (fwrite($handle, $content) === FALSE) {
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| 60 | // Write fail?
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| 61 | return false;
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| 62 | }
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| 63 |
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| 64 | fclose($handle);
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| 65 |
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| 66 | return true;
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| 67 |
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| 68 | }
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| 69 |
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| 70 |
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| 71 | ?> |
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