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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 |
|---|---|
| 539 | wp_cache_set( 'alloptions', $alloptions, 'options' ); |
| 540 | } else { |
| 541 | wp_cache_set( $option, $_newvalue, 'options' ); |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) ); |
| 546 | |
| 547 | if ( $result ) { |
| 548 | do_action( "update_option_{$option}", $oldvalue, $_newvalue ); |
| 549 | do_action( 'updated_option', $option, $oldvalue, $_newvalue ); |
| 550 | return true; |
| 551 | } |
| 552 | return false; |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * Add a new option. |
| 557 | * |