| A | When creating any image, the start points and drawing lengths do not need to be statically indicatedthey can be variables whose values are determined by a database, user input, or calculations within the script. For example, this code creates a red, filled arc of 90°: ImageFilledArc($myImage,50,50,100,50,0,90,$red,IMG_ARC_PIE);
You could set this up so that the red filled arc at the top of the pie will hold the percentage of the total for May Sales in a variable called $may_sales_pct. The line then becomes something like this: ImageFilledArc($myImage,50,50,100,50,0,$may_sales_pct,$red,IMG_ARC_PIE);
The number then is filled in from the calculations or database queries in your script. Be sure to add code to verify that all your arcs add up to 360. |
