(PECL imagick 2 >= 2.3.0, PECL imagick 3)
Imagick::writeImageFile — Writes an image to a filehandle
$filehandle, string $format = ?): boolWrites the image sequence to an open filehandle. The handle must be opened with for example fopen. Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.3.6 ou superior.
filehandleFilehandle where to write the image.
formatThe image format. The list of valid format specifiers depends on the compiled feature set of ImageMagick, and can be queried at runtime via Imagick::queryFormats().
Retorna true em caso de sucesso.