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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 |
---|---|
701 | } |
702 |
|
703 | /** |
704 | * Fires immediately before an option is deleted. |
705 | * |
706 | * @since 2.9.0 |
707 | * |
708 | * @param string $option Name of the option to delete. |
709 | */ |
710 | do_action( 'delete_option', $option ); |
711 |
|
712 | $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); |
713 |
|
714 | if ( ! wp_installing() ) { |
715 | if ( 'yes' === $row->autoload ) { |
716 | $alloptions = wp_load_alloptions( true ); |
717 | if ( is_array( $alloptions ) && isset( $alloptions[ $option ] ) ) { |
718 | unset( $alloptions[ $option ] ); |
719 | wp_cache_set( 'alloptions', $alloptions, 'options' ); |