(PHP 5 >= 5.1.0RC1)

imageconvolution --  Apply a 3x3 convolution matrix, using coefficient div and offset


bool imageconvolution ( resource image, array matrix3x3, float div, float offset )

Returns TRUE on success or FALSE on failure.


This function is currently not documented; only the argument list is available.

Note: This function is only available if PHP is compiled with the bundled version of the GD library.