Manuál PHP | ||
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PÅ™edcházejÃcà | Dalšà |
imagefilter
Popis
bool imagefilter ( resource image, int filtertype [, int arg1 [, int arg2 [, int arg3]]] )
imagefilter() applies the given filter
filtertype
on the image
.
Seznam parametrů
image
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
filtertype
filtertype
can be one of the following:IMG_FILTER_NEGATE: Reverses all colors of the image.
IMG_FILTER_GRAYSCALE: Converts the image into grayscale.
IMG_FILTER_BRIGHTNESS: Changes the brightness of the image. Use
arg1
to set the level of brightness.IMG_FILTER_CONTRAST: Changes the contrast of the image. Use
arg1
to set the level of contrast.IMG_FILTER_COLORIZE: Like IMG_FILTER_GRAYSCALE, except you can specify the color. Use
arg1
,arg2
andarg3
in the form ofred
,blue
,green
. The range for each color is 0 to 255.IMG_FILTER_EDGEDETECT: Uses edge detection to highlight the edges in the image.
IMG_FILTER_EMBOSS: Embosses the image.
IMG_FILTER_GAUSSIAN_BLUR: Blurs the image using the Gaussian method.
IMG_FILTER_SELECTIVE_BLUR: Blurs the image.
IMG_FILTER_MEAN_REMOVAL: Uses mean removal to achieve a "sketchy" effect.
IMG_FILTER_SMOOTH: Makes the image smoother. Use
arg1
to set the level of smoothness.
arg1
arg2
arg3
PÅ™Ãklady
Poznámky
Poznámka: Tato funce je k dispozici jen tehdy, bylo-li PHP zkompilováno s přibalenou verzà knihovny GD.
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