From d2c0baba026f4df34bfad76aeea0e28878cfb2bf Mon Sep 17 00:00:00 2001
From: Erayd <steve@erayd.net>
Date: Wed, 5 Apr 2017 20:04:39 +1200
Subject: [PATCH] Use function_exists to allow polyfill compatibility

---
 src/JsonSchema/Constraints/BaseConstraint.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/JsonSchema/Constraints/BaseConstraint.php b/src/JsonSchema/Constraints/BaseConstraint.php
index e620aec3..13168d71 100644
--- a/src/JsonSchema/Constraints/BaseConstraint.php
+++ b/src/JsonSchema/Constraints/BaseConstraint.php
@@ -146,7 +146,7 @@ public static function arrayToObjectRecursive($array)
         $json = json_encode($array);
         if (json_last_error() !== \JSON_ERROR_NONE) {
             $message = 'Unable to encode schema array as JSON';
-            if (version_compare(phpversion(), '5.5.0', '>=')) {
+            if (function_exists('json_last_error_msg')) {
                 $message .= ': ' . json_last_error_msg();
             }
             throw new InvalidArgumentException($message);