WP_Customize_Setting::post_value( mixed $default = null )
Fetch and sanitize the $_POST value for the setting.
Description
During a save request prior to save, post_value() provides the new value while value() does not.
Parameters
- $default
 -  
(mixed) (Optional) A default value which is used as a fallback.
Default value: null
 
Return
(mixed) The default value on failure, otherwise the sanitized and validated value.
Source
File: wp-includes/class-wp-customize-setting.php
final public function post_value( $default = null ) {
		return $this->manager->post_value( $this, $default );
	}  Changelog
| Version | Description | 
|---|---|
| 3.4.0 | Introduced. | 
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Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/classes/wp_customize_setting/post_value