a small php library to fix writing Arabic text on images with GD

Original code written by Abd Allatif Eymsh, fixed and updated by me :).

• you may need to edit the hex code of some letters depending on the font you are using.
• you may face some proplems with unusual words.
• the font path could be different on linux or macOS (the current example is for windows).
• the recommended way is to use text2uni function becuase it will handle multi words and english words.
• word2uni function takes one word only.