WP_Customize_Manager::is_preview()

Determines whether it is a theme preview or not.

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;
	}

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Changelog

Changelog
Version Description
3.4.0 Introduced.