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Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

GD_VERSION (string)
The GD version PHP was compiled against. (Available as of PHP 5.2.4)
GD_MAJOR_VERSION (integer)
The GD major version PHP was compiled against. (Available as of PHP 5.2.4)
GD_MINOR_VERSION (integer)
The GD minor version PHP was compiled against. (Available as of PHP 5.2.4)
GD_RELEASE_VERSION (integer)
The GD release version PHP was compiled against. (Available as of PHP 5.2.4)
GD_EXTRA_VERSION (string)
The GD "extra" version (beta/rc..) PHP was compiled against. (Available as of PHP 5.2.4)
GD_BUNDLE (integer)
When the bundled version of GD is used this is 1 otherwise its set to 0.
IMG_GIF (integer)
Used as a return value by imagetypes()
IMG_JPG (integer)
Used as a return value by imagetypes()
IMG_JPEG (integer)
Used as a return value by imagetypes()

Note: This constant has the same value as IMG_JPG

IMG_PNG (integer)
Used as a return value by imagetypes()
IMG_WBMP (integer)
Used as a return value by imagetypes()
IMG_XPM (integer)
Used as a return value by imagetypes()
IMG_COLOR_TILED (integer)
Special color option which can be used in stead of color allocated with imagecolorallocate() or imagecolorallocatealpha()
IMG_COLOR_STYLED (integer)
Special color option which can be used in stead of color allocated with imagecolorallocate() or imagecolorallocatealpha()
IMG_COLOR_BRUSHED (integer)
Special color option which can be used in stead of color allocated with imagecolorallocate() or imagecolorallocatealpha()
IMG_COLOR_STYLEDBRUSHED (integer)
Special color option which can be used in stead of color allocated with imagecolorallocate() or imagecolorallocatealpha()
IMG_COLOR_TRANSPARENT (integer)
Special color option which can be used in stead of color allocated with imagecolorallocate() or imagecolorallocatealpha()
IMG_ARC_ROUNDED (integer)
A style constant used by the imagefilledarc() function.

Note: This constant has the same value as IMG_ARC_PIE

IMG_ARC_PIE (integer)
A style constant used by the imagefilledarc() function.
IMG_ARC_CHORD (integer)
A style constant used by the imagefilledarc() function.
IMG_ARC_NOFILL (integer)
A style constant used by the imagefilledarc() function.
IMG_ARC_EDGED (integer)
A style constant used by the imagefilledarc() function.
IMG_GD2_RAW (integer)
A type constant used by the imagegd2() function.
IMG_GD2_COMPRESSED (integer)
A type constant used by the imagegd2() function.
IMG_EFFECT_REPLACE (integer)
Alpha blending effect used by the imagelayereffect() function.
IMG_EFFECT_ALPHABLEND (integer)
Alpha blending effect used by the imagelayereffect() function.
IMG_EFFECT_NORMAL (integer)
Alpha blending effect used by the imagelayereffect() function.
IMG_EFFECT_OVERLAY (integer)
Alpha blending effect used by the imagelayereffect() function.
IMG_FILTER_NEGATE (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_GRAYSCALE (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_BRIGHTNESS (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_CONTRAST (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_COLORIZE (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_EDGEDETECT (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_GAUSSIAN_BLUR (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_SELECTIVE_BLUR (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_EMBOSS (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_MEAN_REMOVAL (integer)
Special GD filter used by the imagefilter() function.
IMG_FILTER_SMOOTH (integer)
Special GD filter used by the imagefilter() function.
IMAGETYPE_GIF (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_JPEG (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_PNG (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_SWF (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_PSD (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_BMP (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_WBMP (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_XBM (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_TIFF_II (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_TIFF_MM (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_IFF (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_JB2 (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_JPC (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_JP2 (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_JPX (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_SWC (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions.
IMAGETYPE_ICO (integer)
Image type constant used by the image_type_to_mime_type() and image_type_to_extension() functions. (Available as of PHP 5.3.0)
PNG_NO_FILTER (integer)
A special PNG filter, used by the imagepng() function.
PNG_FILTER_NONE (integer)
A special PNG filter, used by the imagepng() function.
PNG_FILTER_SUB (integer)
A special PNG filter, used by the imagepng() function.
PNG_FILTER_UP (integer)
A special PNG filter, used by the imagepng() function.
PNG_FILTER_AVG (integer)
A special PNG filter, used by the imagepng() function.
PNG_FILTER_PAETH (integer)
A special PNG filter, used by the imagepng() function.
PNG_ALL_FILTERS (integer)
A special PNG filter, used by the imagepng() function.


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