Show purchase buttons in template files with edd_get_purchase_link()

You can manually display a purchase link for any product by using the 
edd_get_purchase_link() function. This will output the purchase options for the specified product.

In its simplest form, the function can be used like this:

echo edd_get_purchase_link( array( 'download_id' => 37 ) );

If the specified product has 
variable prices enabled, the price options will be displayed above the purchase button.

The function takes a number of possible arguments:

• download_id – The ID number of the product to show a purchase link for
• price – TRUE/FALSE whether or not to show the price on the button
• direct – TRUE/FALSE whether to create a “Buy Now” button or an “Add to Cart” button. Set to TRUE for a buy now behavior
• text – The text to show on the button
• style – button/plain the style of link to show
• color – The color of the button to show
• class – Custom class to add to the button wrapper element