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# Vordefinierte Konstanten

Folgende Konstanten werden von dieser Erweiterung definiert und stehen nur zur Verfügung, wenn die Erweiterung entweder statisch in PHP kompiliert oder dynamisch zur Laufzeit geladen wurde.

`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()

  > Hinweis: 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.

  > Hinweis: 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.

Ressource-Typen
Beispiele
Image
PHP Manual