Almost all drawing fonctions can be tunned by manually feeding rendering parameters like color, transparency,.. This parameters are given to the function within a 2 dimensionnal array.


Arrays are easy to use in PHP. In this descriptive array, we have to provide a couple of values : the name of the parameters will be used as a key and the value will be provided rawly :

 $myArray = array("Alpha"=>50);

..this will associate the value 50 with the parameter Alpha. Basically, drawing function will at least require a color that will be composed of 3 values R,G,B :

 $myArray = array("R"=>191,"G"=>215,"B"=>59);

You can also use a less compact method to fill the array :

 $myArray["R"]=191;
 $myArray["G"]=215;
 $myArray["B"]=59;

When calling a drawing function refer to its documentation. The drawFilledCircle for example have many parameters that can be tuned :


This may lead in a long configuration array :

 $myOptions=array("R"=>191,"G"=>215,"B"=>59,"BorderR"=>211,"BorderG"=>235,"BorderB"=>79,"Alpha"=>80);