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WP_Customize_Manager::is_preview()

Is it a theme preview?

Return

(bool) True if it's a preview, false if not.

Source

File: wp-includes/class-wp-customize-manager.php

public function is_preview() {
		return (bool) $this->previewing;
	}

Changelog

Version Description
3.4.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_customize_manager/is_preview