### Install Payuni PHP SDK using Composer

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Installs the Payuni PHP SDK using Composer, a dependency manager for PHP. Ensure Composer is installed on your system.

```bash
composer require payuni/sdk
```

--------------------------------

### Execute a Trade Query Transaction

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Demonstrates a complete example of initializing the SDK and performing a trade query. It includes setting up merchant keys, initializing the API, and calling the UniversalTrade method with specific parameters.

```php
namespace Payuni\Sdk;
require_once('<your file path>/PayuniApi.php');
$merKey = '12345678901234567890123456789012';
$merIV  = '1234567890123456';
$payuni = new PayuniApi($merKey, $merIV);

$encryptInfo = [
    'MerID' => 'ABC',
    'TradeNo'   => '16614190477810373246',
    'Timestamp' => time()
];
$result = $payuni->UniversalTrade($encryptInfo, 'trade_query');
```

--------------------------------

### Construct EncryptInfo for Transactions

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Provides examples of constructing the $encryptInfo array, which contains transaction details like MerID, Timestamp, and optional parameters like IsPlatForm for platform usage.

```php
$encryptInfo = [
            'MerID' => 'ABC',
            'Timestamp' => time(),
            ...
        ];
```

```php
$encryptInfo = [
            'IsPlatForm' => 1,
            'MerID' => 'ABC',
            'Timestamp' => time(),
            ...
        ];
```

--------------------------------

### Initialize PayuniApi for Production and Test Environments

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Demonstrates how to initialize the PayuniApi class for both the production and test environments. The test environment requires an additional type parameter.

```php
$payuniApi = new \Payuni\Sdk\PayuniApi($merKey, $merIV);
```

```php
$payuniApi = new \Payuni\Sdk\PayuniApi($merKey, $merIV, $type);
```

--------------------------------

### Processupp Return URL and Notify URL Parameters

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Explains how to process the parameters received from upp ReturnURL and NotifyURL using the ResultProcess method of the PayuniApi class.

```php
$result = $payuniApi->ResultProcess($requestData);
```

--------------------------------

### Process Universal Trade Transactions

Source: https://github.com/payuni/php_sdk/blob/main/README.md

Shows how to use the UniversalTrade method of the PayuniApi class to process transactions. This method requires encrypted information, a mode, and optionally a version.

```php
$result = $payuniApi->UniversalTrade($encryptInfo, $mode, $version);
```

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