_flip_image_resource( resource|GdImage $img, bool $horz, bool $vert ): resource|GdImage

572function _flip_image_resource( $img, $horz, $vert ) {573	_deprecated_function( __FUNCTION__, '3.5.0', 'WP_Image_Editor::flip()' );574 575	$w   = imagesx( $img );576	$h   = imagesy( $img );577	$dst = wp_imagecreatetruecolor( $w, $h );578 579	if ( is_gd_image( $dst ) ) {580		$sx = $vert ? ( $w - 1 ) : 0;581		$sy = $horz ? ( $h - 1 ) : 0;582		$sw = $vert ? -$w : $w;583		$sh = $horz ? -$h : $h;584 585		if ( imagecopyresampled( $dst, $img, 0, 0, $sx, $sy, $w, $h, $sw, $sh ) ) {586			if ( PHP_VERSION_ID < 80000 ) { // imagedestroy() has no effect as of PHP 8.0.587				imagedestroy( $img );588			}589 590			$img = $dst;591		}592	}593 594	return $img;595}