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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 |
|---|---|
| 518 | } else { |
| 519 | wp_cache_set( $option, $_newvalue, 'options' ); |
| 520 | } |
| 521 | } |
| 522 | |
| 523 | $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) ); |
| 524 | |
| 525 | if ( $result ) { |
| 526 | do_action( "update_option_{$option}", $oldvalue, $_newvalue ); |
| 527 | do_action( 'updated_option', $option, $oldvalue, $_newvalue ); |
| 528 | return true; |
| 529 | } |
| 530 | return false; |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * Add a new option. |
| 535 | * |
| 536 | * You do not need to serialize values. If the value needs to be serialized, then |