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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 |
|---|---|
| 1012 | * |
| 1013 | * @param array $update_data { |
| 1014 | * Fetched update data. |
| 1015 | * |
| 1016 | * @type int[] $counts An array of counts for available plugin, theme, and WordPress updates. |
| 1017 | * @type string $update_title Titles of available updates. |
| 1018 | * } |
| 1019 | * @param array $titles An array of update counts and UI strings for available updates. |
| 1020 | */ |
| 1021 | return apply_filters( 'wp_get_update_data', $update_data, $titles ); |
| 1022 | } |
| 1023 | |
| 1024 | /** |
| 1025 | * Determines whether core should be updated. |
| 1026 | * |
| 1027 | * @since 2.8.0 |
| 1028 | */ |
| 1029 | function _maybe_update_core() { |
| 1030 | $current = get_site_transient( 'update_core' ); |