From b027f309b4500d88a5dca02a4decc97c84e04907 Mon Sep 17 00:00:00 2001
From: ePascalC <pascal.casier@gmail.com>
Date: Mon, 16 Aug 2021 12:32:48 +0200
Subject: [PATCH 1/3] Enable http_build_query to handle arrays

The standard http_build_query cannot handle queries, but some Binance features like sapi v1/asset/dust can have an array.
---
 php-binance-api.php | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

diff --git a/php-binance-api.php b/php-binance-api.php
index 28228f2e..d13e9cb1 100755
--- a/php-binance-api.php
+++ b/php-binance-api.php
@@ -1222,7 +1222,7 @@ protected function httpRequest(string $url, string $method = "GET", array $param
 
         $curl = curl_init();
         curl_setopt($curl, CURLOPT_VERBOSE, $this->httpDebug);
-        $query = http_build_query($params, '', '&');
+        $query = $this->binance_build_query($params, '', '&');
 
         // signed with params
         if ($signed === true) {
@@ -1253,13 +1253,13 @@ protected function httpRequest(string $url, string $method = "GET", array $param
                 $base = $this->sapi;
             }
         
-            $query = http_build_query($params, '', '&');
+            $query = $this->binance_build_query($params, '', '&');
             $query = str_replace([ '%40' ], [ '@' ], $query);//if send data type "e-mail" then binance return: [Signature for this request is not valid.]
             $signature = hash_hmac('sha256', $query, $this->api_secret);
             if ($method === "POST") {
                 $endpoint = $base . $url;
                 $params['signature'] = $signature; // signature needs to be inside BODY
-                $query = http_build_query($params, '', '&'); // rebuilding query
+                $query = $this->binance_build_query($params, '', '&'); // rebuilding query
             } else {
                 $endpoint = $base . $url . '?' . $query . '&signature=' . $signature;
             }
@@ -1363,6 +1363,35 @@ protected function httpRequest(string $url, string $method = "GET", array $param
         return $json;
     }
 
+    /**
+     * binance_build_query - Wrapper for http_build_query to allow arrays as parameters
+     * 
+     * sapi v1/asset/dust can have an array, so it needs a conversion
+     * 
+     * @param array  $params  (mandatory)   Parameters to convert to http query
+     * 
+     * @return array containing the response
+     * @throws \Exception
+     */
+    protected function binance_build_query($params = [])
+    {
+        $new_arr = array();
+        $query_add = '';
+        foreach ($params as $label=>$item) {
+            if ( gettype($item) == 'array' ) {
+                foreach ($item as $arritem) {
+                    $query_add = $label . '=' . $arritem . '&' . $query_add;
+                }
+            } else {
+                $new_arr[$label] = $item;
+            }
+        }
+        $query = http_build_query($new_arr, '', '&');
+        $query = $query_add . $query;
+
+        return $query;
+    }    
+    
     /**
      * Converts the output of the CURL header to an array
      *

From 1004aa14e33a8ccf5f09ff3ae267e302b50c6c18 Mon Sep 17 00:00:00 2001
From: ePascalC <pascal.casier@gmail.com>
Date: Mon, 16 Aug 2021 13:29:52 +0200
Subject: [PATCH 2/3] Update php-binance-api.php

---
 php-binance-api.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/php-binance-api.php b/php-binance-api.php
index d13e9cb1..c612a0f6 100755
--- a/php-binance-api.php
+++ b/php-binance-api.php
@@ -1253,13 +1253,13 @@ protected function httpRequest(string $url, string $method = "GET", array $param
                 $base = $this->sapi;
             }
         
-            $query = $this->binance_build_query($params, '', '&');
+            $query = $this->binance_build_query($params);
             $query = str_replace([ '%40' ], [ '@' ], $query);//if send data type "e-mail" then binance return: [Signature for this request is not valid.]
             $signature = hash_hmac('sha256', $query, $this->api_secret);
             if ($method === "POST") {
                 $endpoint = $base . $url;
                 $params['signature'] = $signature; // signature needs to be inside BODY
-                $query = $this->binance_build_query($params, '', '&'); // rebuilding query
+                $query = $this->binance_build_query($params); // rebuilding query
             } else {
                 $endpoint = $base . $url . '?' . $query . '&signature=' . $signature;
             }

From 16a4cca6111b2c1c553a765f7a24c15e14a9dc57 Mon Sep 17 00:00:00 2001
From: ePascalC <pascal.casier@gmail.com>
Date: Mon, 16 Aug 2021 13:31:13 +0200
Subject: [PATCH 3/3] Update php-binance-api.php

---
 php-binance-api.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/php-binance-api.php b/php-binance-api.php
index c612a0f6..ce4a1792 100755
--- a/php-binance-api.php
+++ b/php-binance-api.php
@@ -1222,7 +1222,7 @@ protected function httpRequest(string $url, string $method = "GET", array $param
 
         $curl = curl_init();
         curl_setopt($curl, CURLOPT_VERBOSE, $this->httpDebug);
-        $query = $this->binance_build_query($params, '', '&');
+        $query = $this->binance_build_query($params);
 
         // signed with params
         if ($signed === true) {