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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 |
---|---|
503 | return false; |
504 |
|
505 | /** |
506 | * Fires immediately before an option is deleted. |
507 | * |
508 | * @since 2.9.0 |
509 | * |
510 | * @param string $option Name of the option to delete. |
511 | */ |
512 | do_action( 'delete_option', $option ); |
513 |
|
514 | $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); |
515 | if ( ! wp_installing() ) { |
516 | if ( 'yes' == $row->autoload ) { |
517 | $alloptions = wp_load_alloptions(); |
518 | if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) { |
519 | unset( $alloptions[$option] ); |
520 | wp_cache_set( 'alloptions', $alloptions, 'options' ); |
521 | } |