HexFormatter

src/Formatters/HexFormatter.php

@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * This file is part of web3.php package.
+ * 
+ * (c) Kuan-Cheng,Lai <alk03073135@gmail.com>
+ * 
+ * @author Peter Lai <alk03073135@gmail.com>
+ * @license MIT
+ */
+
+namespace Web3\Formatters;
+
+use InvalidArgumentException;
+use Web3\Utils;
+use Web3\Formatters\IFormatter;
+use Web3\Formatters\Integer as IntegerFormatter;
+
+class HexFormatter implements IFormatter
+{
+    /**
+     * format
+     * 
+     * @param mixed $value
+     * @return string
+     */
+    public static function format($value)
+    {
+        $value = Utils::toString($value);
+        $value = mb_strtolower($value);
+
+        if (Utils::isZeroPrefixed($value)) {
+            return $value;
+        } elseif (Utils::isHex($value)) {
+            $value = '0x' . $value;
+        } else {
+            $value = Utils::toHex($value, true);
+        }
+        return $value;
+    }
+}