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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 |
|---|---|
| 5865 | |
| 5866 | /** |
| 5867 | * Filters whether to trigger deprecated hook errors. |
| 5868 | * |
| 5869 | * @since 4.6.0 |
| 5870 | * |
| 5871 | * @param bool $trigger Whether to trigger deprecated hook errors. Requires |
| 5872 | * `WP_DEBUG` to be defined true. |
| 5873 | */ |
| 5874 | if ( WP_DEBUG && apply_filters( 'deprecated_hook_trigger_error', true ) ) { |
| 5875 | $message = empty( $message ) ? '' : ' ' . $message; |
| 5876 | |
| 5877 | if ( $replacement ) { |
| 5878 | $message = sprintf( |
| 5879 | /* translators: 1: WordPress hook name, 2: Version number, 3: Alternative hook name. */ |
| 5880 | __( 'Hook %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), |
| 5881 | $hook, |
| 5882 | $version, |
| 5883 | $replacement |