wp-includes/class-wp-image-editor-imagick.php:906Flips current image.
$horzbool$vertbooltrue|WP_Error public function flip( $horz, $vert ) { try { if ( $horz ) { $this->image->flipImage(); } if ( $vert ) { $this->image->flopImage(); } // Normalize EXIF orientation data so that display is consistent across devices. if ( is_callable( array( $this->image, 'setImageOrientation' ) ) && defined( 'Imagick::ORIENTATION_TOPLEFT' ) ) { $this->image->setImageOrientation( Imagick::ORIENTATION_TOPLEFT ); } } catch ( Exception $e ) { return new WP_Error( 'image_flip_error', $e->getMessage() ); } return true; }Introduced in 3.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-image-editor-imagick.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.