Hallo,
I recently had to integrate Pesapal with a Wordpress site that used Woocommerce as the e-store backend, and I ended up creating a custom payment gateway that integrates Pesapal with Woocommerce as a Wordpress plugin.
PS//At the time I wasn't aware that Jakeii had created something similar, but when I did I studied his code closely to improve it.
To download the plugin, simply go to your plugin manager in your wordpress dashboard and click 'Add New'. Then search for 'Woocommerce Pesapal ' and install or click on the following link to the plugins Wordpress listing
Link:
Woocommerce Pesapal Standard Gateway 
