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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 |
|---|---|
| 1661 | } |
| 1662 | |
| 1663 | /** |
| 1664 | * Filter a user's display name before the user is created or updated. |
| 1665 | * |
| 1666 | * @since 2.0.3 |
| 1667 | * |
| 1668 | * @param string $display_name The user's display name. |
| 1669 | */ |
| 1670 | $display_name = apply_filters( 'pre_user_display_name', $display_name ); |
| 1671 | |
| 1672 | if ( empty($description) ) |
| 1673 | $description = ''; |
| 1674 | |
| 1675 | /** |
| 1676 | * Filter a user's description before the user is created or updated. |
| 1677 | * |
| 1678 | * @since 2.0.3 |
| 1679 | * |