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