Imagick
PHP Manual

Imagick::flopImage

(PECL imagick 2.0.0)

Imagick::flopImage — Creates a horizontal mirror image

Description

bool Imagick::flopImage ( void )

Creates a horizontal mirror image by reflecting the pixels around the central y-axis.

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Imagick
PHP Manual