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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 |
|---|---|
| 573 | /** |
| 574 | * Filters the display output of custom columns in the Users list table. |
| 575 | * |
| 576 | * @since 2.8.0 |
| 577 | * |
| 578 | * @param string $output Custom column output. Default empty. |
| 579 | * @param string $column_name Column name. |
| 580 | * @param int $user_id ID of the currently-listed user. |
| 581 | */ |
| 582 | $r .= apply_filters( 'manage_users_custom_column', '', $column_name, $user_object->ID ); |
| 583 | } |
| 584 | |
| 585 | if ( $primary === $column_name ) { |
| 586 | $r .= $this->row_actions( $actions ); |
| 587 | } |
| 588 | $r .= '</td>'; |
| 589 | } |
| 590 | } |
| 591 | $r .= '</tr>'; |