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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 |
|---|---|
| 3871 | * Filter an option value following sanitization. |
| 3872 | * |
| 3873 | * @since 2.3.0 |
| 3874 | * @since 4.3.0 Added the `$original_value` parameter. |
| 3875 | * |
| 3876 | * @param string $value The sanitized option value. |
| 3877 | * @param string $option The option name. |
| 3878 | * @param string $original_value The original value passed to the function. |
| 3879 | */ |
| 3880 | return apply_filters( "sanitize_option_{$option}", $value, $option, $original_value ); |
| 3881 | } |
| 3882 | |
| 3883 | /** |
| 3884 | * Maps a function to all non-iterable elements of an array or an object. |
| 3885 | * |
| 3886 | * This is similar to `array_walk_recursive()` but acts upon objects too. |
| 3887 | * |
| 3888 | * @since 4.4.0 |
| 3889 | * |