PayPal Developer Dashboard<\/a>, and toggle Sandbox using the button placed at the top-right corner.<\/p>\nCreate Sandbox Merchant Account:<\/b>
\nCreate a sandbox business account with Account type: Business<\/u>. This merchant account is required to attach at the time of the REST API app.<\/p>\n
Create REST API App:<\/b>
\nIn the Apps & Credentials<\/u> section, create a new REST API App with Type: Merchant<\/u>.<\/p>\n\n- Select a business account under the Sandbox Account<\/u> dropdown.<\/li>\n
- After the App creation, the Client ID and Secret will be generated.<\/li>\n
- Make sure the Advanced Credit and Debit Card Payments<\/u> is checked under the Features<\/u> section.<\/li>\n<\/ul>\n
Save changes and copy the API credentials for later use in the script.<\/p>\n
Live REST API Credentials:<\/b>
\nAt the top right corner, toggle the switch to Live. Then navigate to the Apps & Credentials<\/u> section.<\/p>\n\n- Create a new REST API App, you will get the credentials (Client ID and Secret) for the Live environment.<\/li>\n<\/ul>\n
Before getting started to develop PayPal advanced checkout payment script with PHP, take a look at the file structure.<\/p>\n
paypal_advanced_checkout_in_php\/<\/span>\r\n\u251c\u2500\u2500 config.php\r\n\u251c\u2500\u2500 dbConnect.php\r\n\u251c\u2500\u2500 index.php\r\n\u251c\u2500\u2500 PaypalCheckout.class.php\r\n\u251c\u2500\u2500 paypal_checkout_init.php\r\n\u251c\u2500\u2500 payment-status.php\r\n\u2514\u2500\u2500 css\/<\/span>\r\n \u2514\u2500\u2500 style.css\r\n<\/pre>\nCreate Database Table<\/h2>\n
A table is required to store the transaction info in the database. The following SQL creates a transactions<\/code> table in the MySQL database that holds the transaction data.<\/p>\nCREATE<\/span> TABLE<\/span> `transactions`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `item_number`<\/span> varchar<\/span>(50<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `item_name`<\/span> varchar<\/span>(255<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `item_price`<\/span> float<\/span>(10<\/span>,2<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `item_price_currency`<\/span> varchar<\/span>(10<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `order_id`<\/span> varchar<\/span>(50<\/span>) NOT<\/span> NULL<\/span>,\r\n `transaction_id`<\/span> varchar<\/span>(50<\/span>) NOT<\/span> NULL<\/span>,\r\n `paid_amount`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n `paid_amount_currency`<\/span> varchar<\/span>(10<\/span>) NOT<\/span> NULL<\/span>,\r\n `payment_source`<\/span> varchar<\/span>(50<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_source_card_name`<\/span> varchar<\/span>(50<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_source_card_last_digits`<\/span> varchar<\/span>(4<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_source_card_expiry`<\/span> varchar<\/span>(10<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_source_card_brand`<\/span> varchar<\/span>(25<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_source_card_type`<\/span> varchar<\/span>(25<\/span>) DEFAULT<\/span> NULL<\/span>,\r\n `payment_status`<\/span> varchar<\/span>(25<\/span>) NOT<\/span> NULL<\/span>,\r\n `created`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n `modified`<\/span> datetime NOT<\/span> NULL<\/span>,\r\n PRIMARY KEY<\/span> (`id`<\/span>)\r\n) ENGINE<\/span>=InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=utf8 COLLATE<\/span>=utf8_unicode_ci;<\/pre>\nPayPal API and Database Configuration (config.php)<\/h2>\n
In the config.php<\/code> file, constant variables of the Product, PayPal REST API, and database settings are defined.<\/p>\nProduct Information:<\/b><\/p>\n\n$itemNumber<\/code> – Reference number of the product.<\/li>\n$itemName<\/code> – Name of the product.<\/li>\n$itemPrice<\/code> – Product price.<\/li>\n$currency<\/code> – Currency code.<\/li>\n<\/ul>\nPayPal REST API Constants:<\/b><\/p>\n\n- PAYPAL_SANDBOX – (TRUE\/FALSE) Set PayPal environment, Sandbox or Live.<\/li>\n
- PAYPAL_SANDBOX_CLIENT_ID – Client ID of PayPal Sandbox REST API App.<\/li>\n
- PAYPAL_SANDBOX_CLIENT_SECRET – Secret key of PayPal Sandbox REST API App.<\/li>\n
- PAYPAL_PROD_CLIENT_ID – Client ID of PayPal Live REST API App.<\/li>\n
- PAYPAL_PROD_CLIENT_SECRET – Secret key of PayPal Live REST API App.<\/li>\n<\/ul>\n
Database Constants:<\/b><\/p>\n\n- DB_HOST – Specify the database host.<\/li>\n
- DB_USERNAME – Specify the database username.<\/li>\n
- DB_PASSWORD – Specify the database password.<\/li>\n
- DB_NAME – Specify the database name.<\/li>\n<\/ul>\n
<?php
<\/span>\/\/ Product Details
<\/span>$itemNumber <\/span>= <\/span>\"DP12345\"<\/span>;
<\/span>$itemName <\/span>= <\/span>\"Demo Product\"<\/span>;
<\/span>$itemPrice <\/span>= <\/span>75<\/span>;
<\/span>$currency <\/span>= <\/span>\"USD\"<\/span>;
<\/span>\/* PayPal REST API configuration
* You can generate API credentials from the PayPal developer panel.
* See your keys here: https:\/\/developer.paypal.com\/dashboard\/
*\/
<\/span>define<\/span>(<\/span>'PAYPAL_SANDBOX'<\/span>, <\/span>TRUE<\/span>); <\/span>\/\/TRUE=Sandbox | FALSE=Production
<\/span>define<\/span>(<\/span>'PAYPAL_SANDBOX_CLIENT_ID'<\/span>, <\/span>'Insert_PayPal_Client_ID_For_Sandbox_Here'<\/span>);
<\/span>define<\/span>(<\/span>'PAYPAL_SANDBOX_CLIENT_SECRET'<\/span>, <\/span>'Insert_PayPal_Secret_Key_For_Sandbox_Here'<\/span>);
<\/span>define<\/span>(<\/span>'PAYPAL_PROD_CLIENT_ID'<\/span>, <\/span>'Insert_Live_PayPal_Client_ID_Here'<\/span>);
<\/span>define<\/span>(<\/span>'PAYPAL_PROD_CLIENT_SECRET'<\/span>, <\/span>'Insert_Live_PayPal_Secret_Key_Here'<\/span>);
<\/span>\/\/ Database configuration
<\/span>define<\/span>(<\/span>'DB_HOST'<\/span>, <\/span>'localhost'<\/span>);
<\/span>define<\/span>(<\/span>'DB_USERNAME'<\/span>, <\/span>'root'<\/span>);
<\/span>define<\/span>(<\/span>'DB_PASSWORD'<\/span>, <\/span>'root'<\/span>);
<\/span>define<\/span>(<\/span>'DB_NAME'<\/span>, <\/span>'codexworld_db'<\/span>);
<\/span>?><\/span><\/pre>\nNote that:<\/span> PayPal API Client ID and Secret will be found in the REST API App section of your PayPal Developer Dashboard.<\/p>\nDatabase Connection (dbConnect.php)<\/h2>\n
The dbConnect.php<\/code> file is used to connect the database using PHP and MySQL.<\/p>\n<?php
<\/span>\/\/ Connect with the database
<\/span>$db <\/span>= new <\/span>mysqli<\/span>(<\/span>DB_HOST<\/span>, <\/span>DB_USERNAME<\/span>, <\/span>DB_PASSWORD<\/span>, <\/span>DB_NAME<\/span>);
<\/span>\/\/ Display error if failed to connect
<\/span>if (<\/span>$db<\/span>-><\/span>connect_errno<\/span>) {