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_BUNDLED ( 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.

IMG_FILTER_PIXELATE ( integer )

Special GD filter used by the imagefilter() function. (Available as of PHP 5.3.0)

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_JPEG2000 ( 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.