From fdcb2a2d796e35136a81a4867e5711a38787aa1b Mon Sep 17 00:00:00 2001
From: sc0Vu <alk03073135@gmail.com>
Date: Thu, 14 Dec 2017 23:12:44 +0800
Subject: [PATCH] NonceValidator

---
 src/Validators/NonceValidator.php | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/Validators/NonceValidator.php

diff --git a/src/Validators/NonceValidator.php b/src/Validators/NonceValidator.php
new file mode 100644
index 0000000..30b0125
--- /dev/null
+++ b/src/Validators/NonceValidator.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace Web3\Validators;
+
+use Web3\Validators\IValidator;
+
+class NonceValidator
+{
+    /**
+     * validate
+     *
+     * @param string $value
+     * @return bool
+     */
+    public static function validate($value)
+    {
+        if (!is_string($value)) {
+            return false;
+        }
+        return (preg_match('/^0x[a-fA-F0-9]{16}$/', $value) >= 1);
+    }
+}
\ No newline at end of file