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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 |
---|---|
508 | return false; |
509 |
|
510 | /** |
511 | * Fires immediately before an option is deleted. |
512 | * |
513 | * @since 2.9.0 |
514 | * |
515 | * @param string $option Name of the option to delete. |
516 | */ |
517 | do_action( 'delete_option', $option ); |
518 |
|
519 | $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); |
520 | if ( ! wp_installing() ) { |
521 | if ( 'yes' == $row->autoload ) { |
522 | $alloptions = wp_load_alloptions(); |
523 | if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) { |
524 | unset( $alloptions[$option] ); |
525 | wp_cache_set( 'alloptions', $alloptions, 'options' ); |
526 | } |