Todo List
IMAGETYPE_BMP = 6
IMAGETYPE_GIF = 1
IMAGETYPE_IFF = 14
IMAGETYPE_JB2 = 12
IMAGETYPE_JP2 = 10
IMAGETYPE_JPC = 9
IMAGETYPE_JPEG = 2
IMAGETYPE_JPX = 11
IMAGETYPE_PNG = 3
IMAGETYPE_PSD = 5
IMAGETYPE_SWC = 13
IMAGETYPE_SWF = 4
IMAGETYPE_TIFF_II = 7
IMAGETYPE_TIFF_MM = 8
IMAGETYPE_WBMP = 15
IMAGETYPE_XBM = 16
void image_type_to_mime_type( $imagetype)
void php_compat_image_type_to_mime_type( $imagetype)