Move json encoder under \Curl\Encoder::encodeJson

src/Curl/Encoder.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Curl;
+
+class Encoder
+{
+    /**
+     * Encode JSON
+     *
+     * Wrap json_encode() to throw error when the value being encoded fails.
+     *
+     * @access public
+     * @param  $value
+     * @param  $options
+     * @param  $depth
+     *
+     * @return string
+     * @throws \ErrorException
+     */
+    public static function encodeJson()
+    {
+        $args = func_get_args();
+
+        // Call json_encode() without the $depth parameter in PHP
+        // versions less than 5.5.0 as the $depth parameter was added in
+        // PHP version 5.5.0.
+        if (version_compare(PHP_VERSION, '5.5.0', '<')) {
+            $args = array_slice($args, 0, 2);
+        }
+
+        $value = call_user_func_array('json_encode', $args);
+        if (!(json_last_error() === JSON_ERROR_NONE)) {
+            if (function_exists('json_last_error_msg')) {
+                $error_message = 'json_encode error: ' . json_last_error_msg();
+            } else {
+                $error_message = 'json_encode error';
+            }
+            throw new \ErrorException($error_message);
+        }
+        return $value;
+    }
+}