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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 |
|---|---|
| 1446 | } |
| 1447 | |
| 1448 | /** |
| 1449 | * Filter the wp_dropdown_users() HTML output. |
| 1450 | * |
| 1451 | * @since 2.3.0 |
| 1452 | * |
| 1453 | * @param string $output HTML output generated by wp_dropdown_users(). |
| 1454 | */ |
| 1455 | $html = apply_filters( 'wp_dropdown_users', $output ); |
| 1456 | |
| 1457 | if ( $r['echo'] ) { |
| 1458 | echo $html; |
| 1459 | } |
| 1460 | return $html; |
| 1461 | } |
| 1462 | |
| 1463 | /** |
| 1464 | * Sanitize user field based on context. |