Warning: This function is
currently not documented; only the argument list is
available.
Warning: This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Implements direct to memory image formats. It returns the image
sequence as a string. The format of the image determines the
format of the returned blob (GIF, JPEG, PNG, etc.). To return a
different image format, use Imagick::SetImageFormat().
Return Values
Returns a string containing the image. On failure, throws
ImagickException.