add roundStep function to help with stepSize

binance-exchange · Sep 7, 2018 · 1a72414 · 1a72414
2 parents 22f0455 + 9752109
commit 1a72414
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Showing 8 changed files with 64 additions and 24 deletions.
diff --git a/README.md b/README.md
@@ -74,11 +74,10 @@ $api = new Binance\API( "somefile.json" );
 $api->caOverride = true;
 ```
 
-#### Get latest price of a symbol
+#### Get latest price of all symbols
 ```php
 $ticker = $api->prices();
-print_r($ticker); // List prices of all symbols
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.".PHP_EOL;
+print_r($ticker);
 ```
 
 <details>
@@ -172,7 +171,13 @@ Price of BNB: 0.00021479 BTC.
 ```
 </details>
 
-### Get miniTicker for all symbols
+#### Get latest price of a symbol
+```php
+$price = $api->price("BNBBTC");
+echo "Price of BNB: {$price} BTC.".PHP_EOL;
+```
+
+#### Get miniTicker for all symbols
 ```php
 $api->miniTicker(function($api, $ticker) {
 	print_r($ticker);

diff --git a/examples/0.example.php b/examples/0.example.php
@@ -2,13 +2,16 @@
 require '../vendor/autoload.php';
 $api = new Binance\API("<api key>","<secret>");
 
+// Get latest price of all symbols
+$tickers = $api->prices();
+print_r($tickers); // List prices of all symbols
+
 // Get latest price of a symbol
-$ticker = $api->prices();
-print_r($ticker); // List prices of all symbols
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.\n";
+$price = $api->price('BNBBTC');
+echo "Price of BNB: {$price} BTC.\n";
 
 // Get all of your positions, including estimated BTC value
-$balances = $api->balances($ticker);
+$balances = $api->balances($tickers);
 print_r($balances);
 
 // Get all bid/ask prices

diff --git a/examples/get_prices.php b/examples/get_prices.php
@@ -6,7 +6,10 @@
 // use config from ~/.confg/jaggedsoft/php-binance-api.json
 $api = new Binance\API();
 
+// Get latest price of all symbols
+$tickers = $api->prices();
+print_r($tickers); // List prices of all symbols
+
 // Get latest price of a symbol
-$ticker = $api->prices();
-print_r($ticker); // List prices of all symbols
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.\n";
+$price = $api->price('BNBBTC');
+echo "Price of BNB: {$price} BTC.\n";
diff --git a/examples/home_directory_config.php b/examples/home_directory_config.php
@@ -13,6 +13,5 @@
 
 $api = new Binance\API();
 
-$ticker = $api->prices();
-print_r($ticker); // List prices of all symbols
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.".PHP_EOL;
+$tickers = $api->prices();
+print_r($tickers); // List prices of all symbols
diff --git a/examples/proxy_config.php b/examples/proxy_config.php
@@ -14,12 +14,11 @@
 // use config from ~/.confg/jaggedsoft/php-binance-api.json
 $api = new Binance\API("","",["useServerTime"=>false],$proxyConf);
 
-$ticker = $api->prices();
-print_r($ticker); // List prices of all symbols
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.".PHP_EOL;
+$tickers = $api->prices();
+print_r($tickers); // List prices of all symbols
 
 // Get balances for all of your positions, including estimated BTC value
-$balances = $api->balances($ticker);
+$balances = $api->balances($tickers);
 print_r($balances);
 echo "BTC owned: ".$balances['BTC']['available'].PHP_EOL;
 echo "ETH owned: ".$balances['ETH']['available'].PHP_EOL;

diff --git a/examples/ratelimiter.php b/examples/ratelimiter.php
@@ -8,8 +8,8 @@
 $api = new Binance\RateLimiter($api);
 
 // Get latest price of a symbol
-$ticker = $api->prices();
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.\n";
+$price = $api->price("BNBBTC");
+echo "Price of BNB: {$price} BTC.\n";
 
 while(true)
 {

diff --git a/examples/single/single.php b/examples/single/single.php
@@ -3,12 +3,16 @@
 require 'binance-api-single.php';
 $api = new Binance("<key>","<secret>");
 
-$ticker = $api->prices();
-print_r($ticker); // List prices of all symbols 
-echo "Price of BNB: {$ticker['BNBBTC']} BTC.".PHP_EOL;
+// Get latest price of all symbols
+$tickers = $api->prices();
+print_r($tickers); // List prices of all symbols
+
+// Get latest price of a symbol
+$price = $api->price("BNBBTC");
+echo "Price of BNB: {$price} BTC.".PHP_EOL;
 
 // Get balances for all of your positions, including estimated BTC value
-$balances = $api->balances($ticker);
+$balances = $api->balances($tickers);
 print_r($balances);
 echo "BTC owned: ".$balances['BTC']['available'].PHP_EOL;
 echo "ETH owned: ".$balances['ETH']['available'].PHP_EOL;

diff --git a/php-binance-api.php b/php-binance-api.php
@@ -629,6 +629,21 @@ public function prices()
         return $this->priceData($this->httpRequest("v3/ticker/price"));
     }
 
+    /**
+     * price get the latest price of a symbol
+     *
+     * $price = $api->price( "ETHBTC" );
+     *
+     * @return array with error message or array with symbol price
+     * @throws \Exception
+     */
+    public function price(string $symbol)
+    {
+        $ticker = $this->httpRequest("v3/ticker/price", "GET", ["symbol" => $symbol]);
+
+        return $ticker['price'];
+    }
+
     /**
      * bookPrices get all bid/asks prices
      *
@@ -1481,6 +1496,18 @@ private function depthData(string $symbol, array $json)
             "asks" => $asks,
         ];
     }
+
+    /**
+     * roundStep rounds number with given step
+     * @param $value price
+     * @param $stepSize parameter from exchangeInfo
+     * @return rounded value. example: roundStep(1.2345, 0.1) = 1.2
+     *
+     */
+    public function roundStep($value, $stepSize = 0.1) {
+        $precision = strlen(substr(strrchr(rtrim($value,'0'), '.'), 1));
+        return round((($value / $stepSize) | 0) * $stepSize, $precision);
+    }
 
     /**
      * getTransfered gets the total transfered in b,Kb,Mb,Gb