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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 |
---|---|
562 | } |
563 |
|
564 | /** |
565 | * Fires immediately before an option is deleted. |
566 | * |
567 | * @since 2.9.0 |
568 | * |
569 | * @param string $option Name of the option to delete. |
570 | */ |
571 | do_action( 'delete_option', $option ); |
572 |
|
573 | $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); |
574 | if ( ! wp_installing() ) { |
575 | if ( 'yes' == $row->autoload ) { |
576 | $alloptions = wp_load_alloptions(); |
577 | if ( is_array( $alloptions ) && isset( $alloptions[ $option ] ) ) { |
578 | unset( $alloptions[ $option ] ); |
579 | wp_cache_set( 'alloptions', $alloptions, 'options' ); |
580 | } |