Imagefilter Php. Since php version 5 a new feature has appeared. Description bool imagefilter resource image int filtertype int arg1 int arg2 int arg3 imagefilter applies the given filter filtertype on the image.
The documentation misses the exact meaning and valid ranges of the arguments for imagefilter. This function is only available if php is compiled with the bundled version of the gd library. 5 2 imagefilter php what can this extension do.
5 2 imagefilter php what can this extension do.
Use arg1 arg2 and arg3 in the form of red green blue and arg4 for the alpha channel. See also imageconvolution apply a 3x3 convolution matrix using coefficient and offset. The portion defined will be copied onto the x y coordinates dst x and dst y. Use arg1 to set the level of contrast.
