List of PHP payment gateway.

• PayPal - Get client ID and client secret by going to https://developer.paypal.com/developer/applications and generating a REST API app. Get client ID and client secret from there. Set Environment (Sandbox or Production).
• Braintree - Get Merchant ID, Public Key, and Private Key by going to https://www.braintreepayments.com/ and check Keys & Configuration. Get Merchant ID, Public Key, and Private Key from there. Set Environment (Sandbox or Production).
• Stripe - Get Publishable key and Secret key by going to https://dashboard.stripe.com/apikeys and and update these credentials on your system. Set Environment (Sandbox or Production).
• Authorize.net - Get Login ID, and Transaction Key by going to Merchant Interface https://account.authorize.net/ and click Account -> Settings in the main left-side menu. Finally, click on API Credentials & Keys and get Login ID, and Transaction Key from there. Set Environment (Sandbox or Production).
• 2checkout - Get Merchant Code and Private key by going to https://secure.2checkout.com/cpanel/webhooks_api.php and update these credentials on your system.
• Paystack - Get Public Key, and Secret Key by going to Paystack Login and click Settings in the main left-side menu. Finally, insert this callback url on your site on Callback URl & Webhook URL and get Public Key, and Secret Key from there.
• PayU - Get client ID and client secret
• Paynow - Get Integration ID and Integration key by going to https://developers.paynow.co.zw/docs/integration_generation.html and follow the instructions. Finally, find the credentials and update these to your system.
• CoinPayments - Set Merchant ID.
• Instamojo - Set API Key and Auth token.
• PayUmoney - Set Merchant Key and Merchant Salt. Set Environment (Sandbox or Production).
• Razorpay - Get Key ID and Key Secret by going to API Keys https://razorpay.com/docs/payment-gateway/dashboard-guide/settings/api-keys/ and follow the instructions. Finally, find the credentials and update these to your system and insert this callback url on your site for Sender ID, set Keywords on your site, and for subscription on Webhooks settings on your site. Set Environment (Sandbox or Production).
• SSLcommerz - Set Store ID and Store Password. Set Environment (Sandbox or Production).
• aamarPay - Set Store ID and Signature key. Set Environment (Sandbox or Production).
• Flutterwave - Set Public Key and Secret key. Set Environment (Sandbox or Production).
• DirectPayOnline - Set Company Token and Account type. Set Environment (Sandbox or Production).
• PaygateGlobal - Set Api Key.

More about Payment gateway on my blog (ASP.NET only).

• (2018) liqpay.ua - payment gateway to Privatbank.ua
• (2016) Paymaster payment gateway
• (2012) My payment gateway for Inplat.ru
• (2009) Шлюзы к платежным системам интернет-денег.

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