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(PECL imagick 2, PECL imagick 3)
Imagick::getImageType — Gets the image type
Returns the type of the image, derived from its colorspace, its storage class and whether it carries an alpha channel. The pixels themselves are not examined, so the value reflects how the image is currently held rather than the smallest type it could be reduced to.
此函数没有参数。
Returns one of the following
imagick::IMGTYPE_*
constants. imagick::IMGTYPE_UNDEFINED and
imagick::IMGTYPE_OPTIMIZE are never returned.
错误时抛出 ImagickException。
