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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 { |