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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 |
|---|---|
| 930 | /** |
| 931 | * Filters whether to show the Screen Options tab. |
| 932 | * |
| 933 | * @since 3.2.0 |
| 934 | * |
| 935 | * @param bool $show_screen Whether to show Screen Options tab. |
| 936 | * Default true. |
| 937 | * @param WP_Screen $this Current WP_Screen instance. |
| 938 | */ |
| 939 | $this->_show_screen_options = apply_filters( 'screen_options_show_screen', $show_screen, $this ); |
| 940 | return $this->_show_screen_options; |
| 941 | } |
| 942 | |
| 943 | /** |
| 944 | * Render the screen options tab. |
| 945 | * |
| 946 | * @since 3.3.0 |
| 947 | * |
| 948 | * @param array $options { |