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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 |
|---|---|
| 275 | 0 => '', // Unused. Messages start at index 1. |
| 276 | 1 => __( 'Tag added.' ), |
| 277 | 2 => __( 'Tag deleted.' ), |
| 278 | 3 => __( 'Tag updated.' ), |
| 279 | 4 => __( 'Tag not added.' ), |
| 280 | 5 => __( 'Tag not updated.' ), |
| 281 | 6 => __( 'Tags deleted.' ) |
| 282 | ); |
| 283 | |
| 284 | $messages = apply_filters( 'term_updated_messages', $messages ); |
| 285 | |
| 286 | $message = false; |
| 287 | if ( isset( $_REQUEST['message'] ) && ( $msg = (int) $_REQUEST['message'] ) ) { |
| 288 | if ( isset( $messages[ $taxonomy ][ $msg ] ) ) |
| 289 | $message = $messages[ $taxonomy ][ $msg ]; |
| 290 | elseif ( ! isset( $messages[ $taxonomy ] ) && isset( $messages['_item'][ $msg ] ) ) |
| 291 | $message = $messages['_item'][ $msg ]; |
| 292 | } |
| 293 | |