![\"paypal-rest-api-app-sandbox-client-id-secret-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2018\/07\/paypal-rest-api-app-sandbox-client-id-secret-codexworld.png\")
<\/div>\n<\/ul>\n
Create Database Tables<\/h2>\n
To store products and transactions information two tables need to be created in the database. The following SQL creates products<\/code> and payments<\/code> tables in the MySQL database.<\/p>\nCREATE<\/span> TABLE<\/span> `products`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `name`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `image`<\/span> varchar<\/span>(255<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `price`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n `currency`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span> DEFAULT<\/span> 'USD'<\/span>,\r\n `status`<\/span> tinyint(1<\/span>) NOT<\/span> NULL<\/span> DEFAULT<\/span> 1<\/span> COMMENT<\/span> '1=Active, 0=Inactive'<\/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>\nCREATE<\/span> TABLE<\/span> `payments`<\/span> (\r\n `id`<\/span> int<\/span>(11<\/span>) NOT<\/span> NULL<\/span> AUTO_INCREMENT,\r\n `product_id`<\/span> int<\/span>(10<\/span>) NOT<\/span> NULL<\/span>,\r\n `txn_id`<\/span> varchar<\/span>(200<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payment_gross`<\/span> float<\/span>(10<\/span>,2<\/span>) NOT<\/span> NULL<\/span>,\r\n `currency_code`<\/span> varchar<\/span>(5<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payer_id`<\/span> varchar<\/span>(20<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payer_name`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payer_email`<\/span> varchar<\/span>(50<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payer_country`<\/span> varchar<\/span>(5<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `payment_status`<\/span> varchar<\/span>(10<\/span>) COLLATE<\/span> utf8_unicode_ci NOT<\/span> NULL<\/span>,\r\n `created`<\/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>\nDB Class (DB.class.php)<\/h2>\n
The DB class handles all the database related operations (fetch, insert, and update).<\/p>\n
\n- __construct()<\/b> – Connect the MySQL database.<\/li>\n
- getRows()<\/b> – Fetch records from the database based on the specified table and conditions.<\/li>\n
- insert()<\/b> – Insert data in the specified table.<\/li>\n
- update()<\/b> – Update data in the specified table based on the conditions.<\/li>\n<\/ul>\n
<?php
<\/span>\/*
* DB Class
* This class is used to handle the database related (connect, select, insert, and update) operations
* @author CodexWorld.com
* @url http:\/\/www.codexworld.com
* @license http:\/\/www.codexworld.com\/license
*\/
\/\/ Include configuration file
<\/span>require_once <\/span>'config.php'<\/span>;
class <\/span>DB<\/span>{
private <\/span>$dbHost <\/span>= <\/span>DB_HOST<\/span>;
private <\/span>$dbUsername <\/span>= <\/span>DB_USERNAME<\/span>;
private <\/span>$dbPassword <\/span>= <\/span>DB_PASSWORD<\/span>;
private <\/span>$dbName <\/span>= <\/span>DB_NAME<\/span>;
public function <\/span>__construct<\/span>(){
if(!isset(<\/span>$this<\/span>-><\/span>db<\/span>)){
<\/span>\/\/ Connect to the database
<\/span>$conn <\/span>= new <\/span>mysqli<\/span>(<\/span>$this<\/span>-><\/span>dbHost<\/span>, <\/span>$this<\/span>-><\/span>dbUsername<\/span>, <\/span>$this<\/span>-><\/span>dbPassword<\/span>, <\/span>$this<\/span>-><\/span>dbName<\/span>);
if(<\/span>$conn<\/span>-><\/span>connect_error<\/span>){
die(<\/span>\"Failed to connect with MySQL: \" <\/span>. <\/span>$conn<\/span>-><\/span>connect_error<\/span>);
}else{
<\/span>$this<\/span>-><\/span>db <\/span>= <\/span>$conn<\/span>;
}
}
}
<\/span>\/*
* Returns rows from the database based on the conditions
* @param string name of the table
* @param array select, where, order_by, limit and return_type conditions
*\/
<\/span>public function <\/span>getRows<\/span>(<\/span>$table<\/span>,<\/span>$conditions <\/span>= array()){
<\/span>$sql <\/span>= <\/span>'SELECT '<\/span>;
<\/span>$sql <\/span>.= <\/span>array_key_exists<\/span>(<\/span>
![\"paypal-developer-sandbox-account-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2018\/07\/paypal-developer-sandbox-account-codexworld-1024x302.png\")
<\/div>\n![\"create-paypal-sandbox-buyer-business-account-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2018\/07\/create-paypal-sandbox-buyer-business-account-codexworld.png\")
<\/div>\n<\/ul>\n![\"create-paypal-rest-api-app-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2018\/07\/create-paypal-rest-api-app-codexworld.png\")
<\/div>\n![\"paypal-rest-api-app-create-new-application-details-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2018\/07\/paypal-rest-api-app-create-new-application-details-codexworld.png\")
<\/div>\n