Determines whether the current request is inside the Customizer preview.

If true — the current request is inside the Customizer preview, then the object cache gets suspended and widgets should check this to decide whether they should store anything persistently to the object cache, to transients, or anywhere else.

bool True if within the Customizer preview, false if not.

File: wp-includes/class-wp-widget.php. View all references

public function is_preview() {
	global $wp_customize;
	return ( isset( $wp_customize ) && $wp_customize->is_preview() );
}