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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
GD_VERSION
( string )
GD_MAJOR_VERSION
( integer )
GD_MINOR_VERSION
( integer )
GD_RELEASE_VERSION
( integer )
GD_EXTRA_VERSION
( string )
GD_BUNDLED
( integer )
IMG_GIF
( integer )
IMG_JPG
( integer )
IMG_JPEG
( integer )
Note:
本常量值同
IMG_JPG
IMG_PNG
( integer )
IMG_WBMP
( integer )
IMG_XPM
( integer )
IMG_COLOR_TILED
( integer )
IMG_COLOR_STYLED
( integer )
IMG_COLOR_BRUSHED
( integer )
IMG_COLOR_STYLEDBRUSHED
( integer )
IMG_COLOR_TRANSPARENT
( integer )
IMG_ARC_ROUNDED
( integer )
Note:
此常量值同
IMG_ARC_PIE
IMG_ARC_PIE
( integer )
IMG_ARC_CHORD
( integer )
IMG_ARC_NOFILL
( integer )
IMG_ARC_EDGED
( integer )
IMG_GD2_RAW
( integer )
IMG_GD2_COMPRESSED
( integer )
IMG_EFFECT_REPLACE
( integer )
IMG_EFFECT_ALPHABLEND
( integer )
IMG_EFFECT_NORMAL
( integer )
IMG_EFFECT_OVERLAY
( integer )
IMG_FILTER_NEGATE
( integer )
IMG_FILTER_GRAYSCALE
( integer )
IMG_FILTER_BRIGHTNESS
( integer )
IMG_FILTER_CONTRAST
( integer )
IMG_FILTER_COLORIZE
( integer )
IMG_FILTER_EDGEDETECT
( integer )
IMG_FILTER_GAUSSIAN_BLUR
( integer )
IMG_FILTER_SELECTIVE_BLUR
( integer )
IMG_FILTER_EMBOSS
( integer )
IMG_FILTER_MEAN_REMOVAL
( integer )
IMG_FILTER_SMOOTH
( integer )
IMG_FILTER_PIXELATE
( integer )
IMAGETYPE_GIF
( integer )
IMAGETYPE_JPEG
( integer )
IMAGETYPE_JPEG2000
( integer )
IMAGETYPE_PNG
( integer )
IMAGETYPE_SWF
( integer )
IMAGETYPE_PSD
( integer )
IMAGETYPE_BMP
( integer )
IMAGETYPE_WBMP
( integer )
IMAGETYPE_XBM
( integer )
IMAGETYPE_TIFF_II
( integer )
IMAGETYPE_TIFF_MM
( integer )
IMAGETYPE_IFF
( integer )
IMAGETYPE_JB2
( integer )
IMAGETYPE_JPC
( integer )
IMAGETYPE_JP2
( integer )
IMAGETYPE_JPX
( integer )
IMAGETYPE_SWC
( integer )
IMAGETYPE_ICO
( integer )
PNG_NO_FILTER
( integer )
PNG_FILTER_NONE
( integer )
PNG_FILTER_SUB
( integer )
PNG_FILTER_UP
( integer )
PNG_FILTER_AVG
( integer )
PNG_FILTER_PAETH
( integer )
PNG_ALL_FILTERS
( integer )
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
( 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 )
[#1] webmaster at alexventure dot com [2011-08-08 18:25:44]
In case anyone is wondering what these filters are for, have a look at the W3C's specification:
http://www.w3.org/TR/PNG-Filters.html