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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 61 | $lifetime = $this->lifetime; |
| 62 | /** |
| 63 | * Filters the transient lifetime of the feed cache. |
| 64 | * |
| 65 | * @since 2.8.0 |
| 66 | * |
| 67 | * @param int $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours). |
| 68 | * @param string $name Unique identifier for the cache object. |
| 69 | */ |
| 70 | $this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $name ); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Saves data to the transient. |
| 75 | * |
| 76 | * @since 2.8.0 |
| 77 | * |
| 78 | * @param array|SimplePie\SimplePie $data Data to save. If passed a SimplePie object, |
| 79 | * only cache the `$data` property. |