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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 |
|---|---|
| 552 | function column_default( $comment, $column_name ) { |
| 553 | /** |
| 554 | * Fires when the default column output is displayed for a single row. |
| 555 | * |
| 556 | * @since 2.8.0 |
| 557 | * |
| 558 | * @param string $column_name The custom column's name. |
| 559 | * @param int $comment->comment_ID The custom column's unique ID number. |
| 560 | */ |
| 561 | do_action( 'manage_comments_custom_column', $column_name, $comment->comment_ID ); |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | /** |
| 566 | * Post Comments List Table class. |
| 567 | * |
| 568 | * @package WordPress |
| 569 | * @subpackage List_Table |
| 570 | * @since 3.1.0 |