php generate image curly arrow

is it possible to create this image in PHP using GD ? i know i need to use GD and imagecreate, imagecolorallocate, imagedestroy etc... but i have no idea how to do the curve

i need to create multiple arrows with these patterns

• different type of arrows
  


• different inclination of the curve
  


• different colors
  


• different length
  

edit: this way i don't have to look on the internet for arrows (based on a user/client specs). and then later i will add text to the image (for example: click next or follow the arrow). since im not a graphic designer, creating these iamges using gd will be easier for me.

eg:

http://kennebecvalleycoaching.com/red_arrow_curve.JPG

http://s3.amazonaws.com/satisfaction-production/s3_images/13664/curved_inline.png

thanks

Source: Tips4all, CCNA FINAL EXAM