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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 |
|---|---|
| 1541 | } |
| 1542 | |
| 1543 | /** |
| 1544 | * Filter a user's display name before the user is created or updated. |
| 1545 | * |
| 1546 | * @since 2.0.3 |
| 1547 | * |
| 1548 | * @param string $display_name The user's display name. |
| 1549 | */ |
| 1550 | $display_name = apply_filters( 'pre_user_display_name', $display_name ); |
| 1551 | |
| 1552 | $description = empty( $userdata['description'] ) ? '' : $userdata['description']; |
| 1553 | |
| 1554 | /** |
| 1555 | * Filter a user's description before the user is created or updated. |
| 1556 | * |
| 1557 | * @since 2.0.3 |
| 1558 | * |
| 1559 | * @param string $description The user's description. |