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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 |
|---|---|
| 36 | * |
| 37 | * Passing a truthy value to the filter will short-circuit retrieving |
| 38 | * the option value, returning the passed value instead. |
| 39 | * |
| 40 | * @since 1.5.0 |
| 41 | * |
| 42 | * @param bool|mixed $pre_option Value to return instead of the option value. |
| 43 | * Default false to skip it. |
| 44 | */ |
| 45 | $pre = apply_filters( 'pre_option_' . $option, false ); |
| 46 | if ( false !== $pre ) |
| 47 | return $pre; |
| 48 | |
| 49 | if ( defined( 'WP_SETUP_CONFIG' ) ) |
| 50 | return false; |
| 51 | |
| 52 | if ( ! defined( 'WP_INSTALLING' ) ) { |
| 53 | // prevent non-existent options from triggering multiple queries |
| 54 | $notoptions = wp_cache_get( 'notoptions', 'options' ); |