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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 |
|---|---|
| 87 | |
| 88 | foreach ( $network_ids as $id ) { |
| 89 | /** |
| 90 | * Fires immediately after a network has been removed from the object cache. |
| 91 | * |
| 92 | * @since 4.6.0 |
| 93 | * |
| 94 | * @param int $id Network ID. |
| 95 | */ |
| 96 | do_action( 'clean_network_cache', $id ); |
| 97 | } |
| 98 | |
| 99 | wp_cache_set( 'last_changed', microtime(), 'networks' ); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Updates the network cache of given networks. |
| 104 | * |
| 105 | * Will add the networks in $networks to the cache. If network ID already exists |