以下の定数が定義されています。 この関数の拡張モジュールが PHP 組み込みでコンパイルされているか、 実行時に動的にロードされている場合のみ使用可能です。
GD_VERSION
(string) GD_MAJOR_VERSION
(int) GD_MINOR_VERSION
(int) GD_RELEASE_VERSION
(int) GD_EXTRA_VERSION
(string) GD_BUNDLED
(int) IMG_AVIF
(int) IMG_BMP
(int) IMG_GIF
(int) IMG_JPG
(int) IMG_JPEG
(int) 注意:
この定数の値は
IMG_JPG
と同じです。
IMG_PNG
(int) IMG_WBMP
(int) IMG_XPM
(int) IMG_WEBP
(int) IMG_WEBP_LOSSLESS
(int) IMG_COLOR_TILED
(int) IMG_COLOR_STYLED
(int) IMG_COLOR_BRUSHED
(int) IMG_COLOR_STYLEDBRUSHED
(int) IMG_COLOR_TRANSPARENT
(int) IMG_AFFINE_TRANSLATE
(int) IMG_AFFINE_SCALE
(int) IMG_AFFINE_ROTATE
(int) IMG_AFFINE_SHEAR_HORIZONTAL
(int) IMG_AFFINE_SHEAR_VERTICAL
(int) IMG_ARC_ROUNDED
(int) 注意:
この定数の値は
IMG_ARC_PIE
と同じです。
IMG_ARC_PIE
(int) IMG_ARC_CHORD
(int) IMG_ARC_NOFILL
(int) IMG_ARC_EDGED
(int) IMG_GD2_RAW
(int) IMG_GD2_COMPRESSED
(int) IMG_EFFECT_REPLACE
(int) IMG_EFFECT_ALPHABLEND
(int) IMG_EFFECT_NORMAL
(int) IMG_EFFECT_OVERLAY
(int) IMG_EFFECT_MULTIPLY
(int) IMG_FILTER_NEGATE
(int) IMG_FILTER_GRAYSCALE
(int) IMG_FILTER_BRIGHTNESS
(int) IMG_FILTER_CONTRAST
(int) IMG_FILTER_COLORIZE
(int) IMG_FILTER_EDGEDETECT
(int) IMG_FILTER_GAUSSIAN_BLUR
(int) IMG_FILTER_SELECTIVE_BLUR
(int) IMG_FILTER_EMBOSS
(int) IMG_FILTER_MEAN_REMOVAL
(int) IMG_FILTER_SMOOTH
(int) IMG_FILTER_PIXELATE
(int) IMG_FILTER_SCATTER
(int) IMAGETYPE_GIF
(int) IMAGETYPE_JPEG
(int) IMAGETYPE_JPEG2000
(int) IMAGETYPE_PNG
(int) IMAGETYPE_SWF
(int) IMAGETYPE_PSD
(int) IMAGETYPE_BMP
(int) IMAGETYPE_WBMP
(int) IMAGETYPE_XBM
(int) IMAGETYPE_TIFF_II
(int) IMAGETYPE_TIFF_MM
(int) IMAGETYPE_IFF
(int) IMAGETYPE_JB2
(int) IMAGETYPE_JPC
(int) IMAGETYPE_JP2
(int) IMAGETYPE_JPX
(int) IMAGETYPE_SWC
(int) IMAGETYPE_ICO
(int) IMAGETYPE_WEBP
(int) IMAGETYPE_AVIF
(int) PNG_NO_FILTER
(int) PNG_FILTER_NONE
(int) PNG_FILTER_SUB
(int) PNG_FILTER_UP
(int) PNG_FILTER_AVG
(int) PNG_FILTER_PAETH
(int) PNG_ALL_FILTERS
(int) IMG_FLIP_VERTICAL
(int) IMG_FLIP_HORIZONTAL
(int) IMG_FLIP_BOTH
(int) IMG_BELL
(int) IMG_BESSEL
(int) IMG_BILINEAR_FIXED
(int) IMG_BICUBIC
(int) IMG_BICUBIC_FIXED
(int) IMG_BLACKMAN
(int) IMG_BOX
(int) IMG_BSPLINE
(int) IMG_CATMULLROM
(int) IMG_GAUSSIAN
(int) IMG_GENERALIZED_CUBIC
(int) IMG_HERMITE
(int) IMG_HAMMING
(int) IMG_HANNING
(int) IMG_MITCHELL
(int) IMG_POWER
(int) IMG_QUADRATIC
(int) IMG_SINC
(int) IMG_NEAREST_NEIGHBOUR
(int) IMG_WEIGHTED4
(int) IMG_TRIANGLE
(int)