fixed php 7.4 compatibility

Author: samuraee

composer.json

@@ -15,7 +15,7 @@
 		}
 	],
 	"require": {
-		"php": ">=7.2",
+		"php": ">=7.4",
 		"ext-soap" : "*",
         "ext-json": "*",
         "ext-bcmath": "*",

src/Adapter/AdapterAbstract.php

@@ -112,7 +112,7 @@ public function getTransaction(): TransactionInterface
     public function setParameters(array $parameters = []): AdapterInterface
     {
         foreach ($parameters as $key => $value) {
-            if($key == 'customer_card_number'){
+            if($key === 'customer_card_number'){
                 continue;
             }
             $key = strtolower($key);
@@ -198,7 +198,7 @@ protected function checkRequiredParameters(array $parameters)
      */
     protected function getWSDL(): string
     {
-        if (config('larapay.mode') == 'production') {
+        if (config('larapay.mode') === 'production') {
             return $this->WSDL;
         } else {
             return $this->testWSDL;
@@ -210,7 +210,7 @@ protected function getWSDL(): string
      */
     protected function getEndPoint(): string
     {
-        if (config('larapay.mode') == 'production') {
+        if (config('larapay.mode') === 'production') {
             return $this->endPoint;
         } else {
             return $this->testEndPoint;

src/Adapter/Pasargad/RSA.php

@@ -15,9 +15,8 @@ public static function rsa_encrypt($message, $public_key, $modulus, $keylength)
         $padded    = RSA::add_PKCS1_padding($message, true, $keylength / 8);
         $number    = RSA::binary_to_number($padded);
         $encrypted = RSA::pow_mod($number, $public_key, $modulus);
-        $result    = RSA::number_to_binary($encrypted, $keylength / 8);
 
-        return $result;
+        return RSA::number_to_binary($encrypted, $keylength / 8);
     }
 
     public static function rsa_decrypt($message, $private_key, $modulus, $keylength)
@@ -108,18 +107,18 @@ public static function remove_PKCS1_padding($data, $blocksize)
     {
         assert(strlen($data) == $blocksize);
         $data = substr($data, 1);
-        if ($data{0} === '\0') {
+        if ($data[0] === '\0') {
             die("Block type 0 not implemented.");
         }
-        assert(($data{0} === "\x01") || ($data{0} === "\x02"));
+        assert(($data[0] === "\x01") || ($data[0] === "\x02"));
         $offset = strpos($data, "\0", 1);
 
         return substr($data, $offset + 1);
     }
 
     public static function remove_KYP_padding($data, $blocksize)
     {
-        assert(strlen($data) == $blocksize);
+        assert(strlen($data) === $blocksize);
         $offset = strpos($data, "\0");
 
         return substr($data, 0, $offset);
@@ -131,7 +130,7 @@ public static function binary_to_number($data)
         $radix  = "1";
         $result = "0";
         for ($i = strlen($data) - 1; $i >= 0; $i--) {
-            $digit    = ord($data{$i});
+            $digit    = ord($data[$i]);
             $part_res = bcmul($digit, $radix);
             $result   = bcadd($result, $part_res);
             $radix    = bcmul($radix, $base);

src/Adapter/Pasargad/RSAProcessor.php

@@ -29,10 +29,10 @@ public function __construct ($xmlRsaKey = null, $keyType = null)
 		$xmlObj = null;
         $keyType = is_null($keyType) ? null : strtolower($keyType);
 
-        if ($keyType === null || $keyType == RSAKeyType::XMLString) {
-            $xmlObj = simplexml_load_string($xmlRsaKey);
-        } elseif ($keyType == RSAKeyType::XMLFile) {
+        if ($keyType === RSAKeyType::XMLFile) {
             $xmlObj = simplexml_load_string(file_get_contents($xmlRsaKey));
+        } else {
+            $xmlObj = simplexml_load_string($xmlRsaKey);
         }
 
 		$this->modulus     = RSA::binary_to_number(base64_decode($xmlObj->Modulus));