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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 |
|---|---|
| 413 | } elseif ( 'link_category' == $taxonomy ) { |
| 414 | /** |
| 415 | * Fires before the link category form. |
| 416 | * |
| 417 | * @since 2.3.0 |
| 418 | * @deprecated 3.0.0 Use {$taxonomy}_pre_add_form instead. |
| 419 | * |
| 420 | * @param object $arg Optional arguments cast to an object. |
| 421 | */ |
| 422 | do_action( 'add_link_category_form_pre', (object) array( 'parent' => 0 ) ); |
| 423 | } else { |
| 424 | /** |
| 425 | * Fires before the Add Tag form. |
| 426 | * |
| 427 | * @since 2.5.0 |
| 428 | * @deprecated 3.0.0 Use {$taxonomy}_pre_add_form instead. |
| 429 | * |
| 430 | * @param string $taxonomy The taxonomy slug. |
| 431 | */ |