Linux ip-172-26-7-228 5.4.0-1103-aws #111~18.04.1-Ubuntu SMP Tue May 23 20:04:10 UTC 2023 x86_64
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<?php
/*
* initiate_refund method refund amount and call dispay the refund page.
*
* param string $params - holds the $_POST form data.
* param string $merchant_key - holds the merchant key.
* param string $salt - holds the merchant salt key.
* param string $env - holds the env(enviroment)
*
* ##Return values
*
* - return array $result - holds the refund array.
*
* @param string $params - holds the $_POST form data.
* @param string $merchant_key - holds the merchant key.
* @param string $salt - holds the merchant salt key.
* @param string $env - holds the env(enviroment)
*
* @return array $result - holds the refund array.
*
*/
function initiate_refund($params, $merchant_key, $salt, $env){
$result = _refund($params, $merchant_key, $salt, $env);
return $result;
}
/*
* _refund method use for initiate refund.
*
* param string $key - holds the merchant key.
* param string $txnid - holds the transaction id.
* param float $refund_amount - holds the refund amount.
* param string $email - holds the email.
* param string $amount - holds the amount.
* param string $phone - holds the phone.
* param string $hash - holds the hash key.
*
* #### Define variable
*
* $postedArray array - holds merchant key and $_POST form data.
* $URL string - holds url based on the $env(enviroment : 'test' or 'prod')
*
* ##Return values
*
* - return array $pay_result - holds the response with status and data.
*
* - return integer status = 1 successful.
*
* - return integer status = 0 error.
*
* @param string $key - holds the merchant key.
* @param string $txnid - holds the transaction id.
* @param float $refund_amount - holds the refund amount.
* @param string $email - holds the email.
* @param string $amount - holds the amount.
* @param string $phone - holds the phone.
* @param string $hash - holds the hash key.
*
* @return array $pay_result - holds the response with status and data.
* @return integer status = 1 successful.
* @return integer status = 0 error.
*
*/
function _refund($params, $merchant_key, $salt, $env){
$postedArray = '';
$URL = '';
// argument validation
$argument_validation = _checkArgumentValidation($params, $merchant_key, $salt, $env);
if(is_array($argument_validation) && $argument_validation['status'] === 0){
return $argument_validation;
}
// push merchant key into $params array.
$params['key'] = $merchant_key;
// remove white space, htmlentities(converts characters to HTML entities), prepared $postedArray.
$postedArray = _removeSpaceAndPreparePostArray($params);
// empty validation
$empty_validation = _emptyValidation($postedArray, $salt);
if(is_array($empty_validation) && $empty_validation['status'] === 0){
return $empty_validation;
}
// check refund amount should be float or not
if(preg_match("/^([\d]+)\.([\d]?[\d])$/", $postedArray['refund_amount'])){
$postedArray['refund_amount'] = (float)$postedArray['refund_amount'];
}
// check amount should be float or not
if(preg_match("/^([\d]+)\.([\d]?[\d])$/", $postedArray['amount'])){
$postedArray['amount'] = (float)$postedArray['amount'];
}
// type validation
$type_validation = _typeValidation($postedArray, $salt, $env);
if($type_validation !== true){
return $type_validation;
}
// again refund amount convert into string
$diff_amount_string = abs( strlen($params['refund_amount']) - strlen("".$postedArray['refund_amount']."") );
$diff_amount_string = ($diff_amount_string === 2) ? 1 : 2;
$postedArray['refund_amount'] = sprintf("%.".$diff_amount_string."f", $postedArray['refund_amount']);
// again amount convert into string
$diff_amount_string = abs( strlen($params['amount']) - strlen("".$postedArray['amount']."") );
$diff_amount_string = ($diff_amount_string === 2) ? 1 : 2;
$postedArray['amount'] = sprintf("%.".$diff_amount_string."f", $postedArray['amount']);
// email validation
if(!empty($postedArray['email'])){
$email_validation = _emailValidation($postedArray['email']);
if($email_validation !== true)
return $email_validation;
}
// get URL based on enviroment like ($env = 'test' or $env = 'prod')
$URL = _getURL($env);
// process to start refund
$refund_result = _refundPayment($postedArray, $salt, $URL);
return $refund_result;
}
/*
* _checkArgumentValidation method Check number of Arguments Validation. Means how many arguments submitted
* from form and verify with
* API documentation.
*
* param array $params - holds the all $_POST data.
* param string $salt - holds the merchant salt key.
* param string $env - holds the enviroment.
*
* ##Return values
*
* - return interger 1 number of arguments match.
*
* - return array status = 0 number of arguments mismatch.
*
* @param array $params - holds the all $_POST data.
* @param string $salt - holds the merchant salt key.
* @param string $env - holds the enviroment.
*
* @return interger 1 number of arguments match.
* @return array status = 0 number of arguments mismatch.
*
*/
function _checkArgumentValidation($params, $merchant_key, $salt, $env){
$args = func_get_args();
$argsc = count($args);
if($argsc !== 4){
return array(
'status' => 0,
'data' => 'Invalid number of arguments.'
);
}
return 1;
}
/*
* _removeSpaceAndPreparePostArray method Remove white space, converts characters to HTML entities
* and prepared the posted array.
*
* param array $params - holds $_POST array, merchant key and transaction key.
*
* ##Return values
*
* - return array $temp_array - holds the all posted value after removing space.
*
* @param array $params - holds $_POST array, merchant key and transaction key.
*
* @return array $temp_array - holds the all posted value after removing space.
*
*/
function _removeSpaceAndPreparePostArray($params){
/*$temp_array = array(
'key' => trim( htmlentities($params['key'], ENT_QUOTES) ),
'txnid' => trim( htmlentities($params['txnid'], ENT_QUOTES) ),
'refund_amount' => trim( htmlentities($params['refund_amount'], ENT_QUOTES) ),
'phone' => trim( htmlentities($params['phone'], ENT_QUOTES) ),
'amount' => trim( htmlentities($params['amount'], ENT_QUOTES) ),
'email' => trim( htmlentities($params['email'], ENT_QUOTES) )
);
*/
$temp_array = array();
foreach ($params as $key => $value) {
$temp_array[$key] = trim(htmlentities($value, ENT_QUOTES));
}
return $temp_array;
}
/*
* _emptyValidation method check empty validation for Mandatory Parameters.
*
* param array $params - holds the all $_POST data
* param string $salt - holds the merchant salt key.
* param string $env - holds the enviroment.
*
* ##Return values
*
* - return boolean true - all $params Mandatory parameters is not empty.
*
* - return array with status and data - $params parameters or $salt are empty.
*
* @param array $params - holds the all $_POST data.
* @param string $salt - holds the merchant salt key.
* @param string $env - holds the enviroment.
*
* @return boolean true - all $params Mandatory parameters is not empty.
* @return array with status and data - $params parameters or $salt are empty.
*
*/
function _emptyValidation($params, $salt){
$empty_value = false;
if(empty($params['key']))
$empty_value = 'Merchant Key';
if(empty($params['txnid']))
$empty_value = 'Transaction ID';
if(empty($params['refund_amount']))
$empty_value = 'Refund Amount';
if(empty($params['phone']))
$empty_value = 'Phone';
if(empty($params['email']))
$empty_value = 'Email ID';
if(empty($params['amount']))
$empty_value = ' Paid Amount';
if(empty($salt))
$empty_value = 'Merchant Salt Key';
if($empty_value !== false){
return array(
'status' => 0,
'data' => 'Mandatory Parameter '.$empty_value.' can not empty'
);
}
return true;
}
/*
* _typeValidation method check type validation for field.
*
* param array $params - holds the all $_POST data.
* param string $salt - holds the merchant salt key.
* param string $env - holds the enviroment.
*
* ##Return values
*
* - return boolean true - all params parameters type are correct.
*
* - return array with status and data - params parameters type mismatch.
*
* @param array $params - holds the all $_POST data.
* @param string $salt - holds the merchant salt key.
* @param string $env - holds the enviroment.
*
* @return boolean true - all params parameters type are correct.
* @return array with status and data - params parameters type mismatch.
*
*/
function _typeValidation($params, $salt, $env){
$type_value = false;
if(!is_string($params['key']))
$type_value = "Merchant Key should be string";
if(!is_string($params['txnid']))
$type_value = "Transaction ID should be string";
if(!is_string($params['phone']))
$type_value = "Phone Number should be number";
if(!is_string($params['email']))
$type_value = "Email ID should be string";
if(!is_float($params['amount']))
$type_value = "The paid amount should float up to two or one decimal.";
if(!is_float($params['refund_amount']))
$type_value = "The refund amount should float up to two or one decimal.";
if($type_value !== false){
return array(
'status' => 0,
'data' => $type_value
);
}
return true;
}
/*
* _emailValidation method check email format validation
*
* param string $email - holds the email address.
*
* ##Return values
*
* - return boolean true - email format is correct.
*
* - return array with status and data - email format is incorrect.
*
* @param string $email - holds the email address.
*
* @return boolean true - email format is correct.
* @return array with status and data - email format is incorrect.
*
*/
function _emailValidation($email){
$email_regx = "/^([\w\.-]+)@([\w-]+)\.([\w]{2,8})(\.[\w]{2,8})?$/";
if(!preg_match($email_regx, $email)){
return array(
'status' => 0,
'data' => 'Email invalid, Please enter valid email.'
);
}
return true;
}
/*
* _getURL method set based on enviroment ($env = 'test' or $env = 'prod') and generate url link.
*
* param string $env - holds the enviroment.
*
* ##Return values
*
* - return string $url_link - holds the full url link.
*
* @param string $env - holds the enviroment.
*
* @return string $url_link - holds the full URL.
*
*/
function _getURL($env){
$url_link = '';
switch($env){
case 'test' :
$url_link = "https://testdashboard.easebuzz.in/";
break;
case 'prod' :
$url_link = 'https://dashboard.easebuzz.in/';
break;
default :
$url_link = "https://testdashboard.easebuzz.in/";
}
return $url_link;
}
/*
* _refundPayment method initiate refund payment.
*
* params array $params_array - holds all form data with merchant key, transaction id etc.
* params string $salt_key - holds the merchant salt key.
* params string $url - holds the url based in env(enviroment type $env = 'test' or $env = 'prod')
*
* param string $key - holds the merchant key.
* param string $txnid - holds the transaction id.
* param float $refund_amount - holds the refund amount.
* param string $email - holds the email.
* param string $amount - holds the amount.
* param string $phone - holds the phone.
* param string $hash - holds the hash key.
*
* ##Return values
*
* - return array with status and data - holds the details
*
* - return integer status = 0 means error.
*
* - return integer status = 1 means success and go the url link.
*
* @params array $params_array - holds all form data with merchant key, transaction id etc.
* @params string $salt_key - holds the merchant salt key.
* @params string $url - holds the url based in env(enviroment type $env = 'test' or $env = 'prod')
*
* @param string $key - holds the merchant key.
* @param string $txnid - holds the transaction id.
* @param float $refund_amount - holds the refund amount.
* @param string $email - holds the email.
* @param string $amount - holds the amount.
* @param string $phone - holds the phone.
* @param string $hash - holds the hash key.
*
* @return array with status and data - holds the details
* @return integer status = 0 means error.
* @return integer status = 1 means success and go the url link.
*
*/
function _refundPayment($params_array, $salt_key, $url){
$hash_key = '';
// generate hash key and push into params array.
$hash_key = _getHashKey($params_array, $salt_key);
$params_array['hash'] = $hash_key;
// call curl_call() for initiate pay link
$curl_result = _curlCall( $url.'transaction/v1/refund', http_build_query($params_array) );
return $curl_result;
}
/*
* _getHashKey method generate Hash key based on the API call (refund API).
*
* hash format (hash sequence) :
* $hash = key|txnid|amount|refund_amount|email|phone|salt
*
* params string $hash_sequence - holds the format of hash key (sequence).
* params array $params - holds the passed array.
* params string $salt - holds merchant salt key.
*
* ##Return values
*
* - return string $hash - holds the generated hash key.
*
* @params string $hash_sequence - holds the format of hash key (sequence).
* @params array $params - holds the passed array.
* @params string $salt - holds merchant salt key.
*
* @return string $hash - holds the generated hash key.
*
*/
function _getHashKey($posted, $salt_key){
$hash_sequence = "key|txnid|amount|refund_amount|email|phone";
// make an array or split into array base on pipe sign.
$hash_sequence_array = explode( '|', $hash_sequence );
$hash = null;
// prepare a string based on hash sequence from the $params array.
foreach($hash_sequence_array as $value ) {
$hash .= isset($posted[$value]) ? $posted[$value] : '';
$hash .= '|';
}
$hash .= $salt_key;
// generate hash key using hash function(predefine) and return
return strtolower( hash('sha512', $hash) );
}
/*
* _curlCall method call CURL for refund payment link.
*
* params string $url - holds the payment URL which will be redirect to.
* params array $params_array - holds the passed array.
*
* ##Return values
*
* - return array with curl_status and data - holds the details.
*
* - return integer curl_status = 0 means error.
*
* - return integer curl_status = 1 means success.
*
* @params string $url - holds the payment URL which will be redirect to.
* @params array $params_array - holds the passed array.
*
* @return array with curl_status and data - holds the details.
* @return integer curl_status = 0 means error.
* @return integer curl_status = 1 means success and go the url link.
*
* ##Method call
* - curl_init() - Initializes a new session and return a cURL.
* - curl_setopt_array() - Set multiple options for a cURL transfer.
* - curl_exec() - Perform a cURL session.
* - curl_errno() - Return the last error number.
* - curl_error() - Return a string containing the last error for the current session.
*
* ##Used value
* - curl_status => 0 : means failure.
* - curl_status => 1 : means Success.
*
*/
function _curlCall($url, $params_array){
// Initializes a new session and return a cURL.
$cURL = curl_init();
// Set multiple options for a cURL transfer.
curl_setopt_array(
$cURL,
array (
CURLOPT_URL => $url,
CURLOPT_POSTFIELDS => $params_array,
CURLOPT_POST => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_USERAGENT => 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36',
CURLOPT_SSL_VERIFYHOST => 0,
CURLOPT_SSL_VERIFYPEER => 0
)
);
// Perform a cURL session
$result = curl_exec($cURL);
// check there is any error or not in curl execution.
if( curl_errno($cURL) ){
$cURL_error = curl_error($cURL);
if( empty($cURL_error) )
$cURL_error = 'Server Error';
return array(
'curl_status' => 0,
'error' => $cURL_error
);
}
$result = trim($result);
return json_decode($result);
}
?>
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