Example: razorpay currency support
$currency_support = array ('AED','ALL','AMD','ARS','AUD','AWG','BBD','BDT',
'BMD','BND','BOB','BSD','BWP','BZD','CAD','CHF','CNY','COP','CRC','CUP','CZK',
'DKK','DOP','DZD','EGP','ETB','EUR','FJD','GBP','GIP','GHS','GMD','GTQ','GYD',
'HKD','HNL','HRK','HTG','HUF','IDR','ILS','INR','JMD','KES','KGS','KHR','KYD',
'KZT','LAK','LBP','LKR','LRD','LSL','MAD','MDL','MKD','MMK','MNT','MOP','MUR',
'MVR','MWK','MXN','MYR','NAD','NGN','NIO','NOK','NPR','NZD','PEN','PGK',
'PHP','PKR','QAR','RUB','SAR','SCR','SEK','SGD','SLL','SOS','SSP','SVC','SZL',
'THB','TTD','TZS','USD','UYU','UZS','YER','ZAR');