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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 |
|---|---|
| 1043 | |
| 1044 | /** |
| 1045 | * Filters the query arguments for the user drop-down. |
| 1046 | * |
| 1047 | * @since 4.4.0 |
| 1048 | * |
| 1049 | * @param array $query_args The query arguments for wp_dropdown_users(). |
| 1050 | * @param array $r The default arguments for wp_dropdown_users(). |
| 1051 | */ |
| 1052 | $query_args = apply_filters( 'wp_dropdown_users_args', $query_args, $r ); |
| 1053 | |
| 1054 | $users = get_users( $query_args ); |
| 1055 | |
| 1056 | $output = ''; |
| 1057 | if ( ! empty( $users ) && ( empty( $r['hide_if_only_one_author'] ) || count( $users ) > 1 ) ) { |
| 1058 | $name = esc_attr( $r['name'] ); |
| 1059 | if ( $r['multi'] && ! $r['id'] ) { |
| 1060 | $id = ''; |
| 1061 | } else { |