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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 |
---|---|
631 | * |
632 | * @since 2.8.0 |
633 | * |
634 | * @see set_screen_options() |
635 | * |
636 | * @param bool|int $value Screen option value. Default false to skip. |
637 | * @param string $option The option name. |
638 | * @param int $value The number of rows to use. |
639 | */ |
640 | $value = apply_filters( 'set-screen-option', false, $option, $value ); |
641 |
|
642 | if ( false === $value ) |
643 | return; |
644 | break; |
645 | } |
646 |
|
647 | update_user_meta($user->ID, $option, $value); |
648 |
|
649 | $url = remove_query_arg( array( 'pagenum', 'apage', 'paged' ), wp_get_referer() ); |