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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 |
|---|---|
| 988 | } |
| 989 | |
| 990 | /** |
| 991 | * Filter the wp_dropdown_users() HTML output. |
| 992 | * |
| 993 | * @since 2.3.0 |
| 994 | * |
| 995 | * @param string $output HTML output generated by wp_dropdown_users(). |
| 996 | */ |
| 997 | $html = apply_filters( 'wp_dropdown_users', $output ); |
| 998 | |
| 999 | if ( $r['echo'] ) { |
| 1000 | echo $html; |
| 1001 | } |
| 1002 | return $html; |
| 1003 | } |
| 1004 | |
| 1005 | /** |
| 1006 | * Sanitize user field based on context. |