From 3b62e8bfe90c0e6924e0e1c3970493dd0ef74b32 Mon Sep 17 00:00:00 2001
From: Erayd <steve@erayd.net>
Date: Thu, 23 Feb 2017 11:40:25 +1300
Subject: [PATCH] Use PHP-5.3 compliant syntax

---
 src/JsonSchema/Constraints/FormatConstraint.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/JsonSchema/Constraints/FormatConstraint.php b/src/JsonSchema/Constraints/FormatConstraint.php
index d2b853fe..839debcc 100644
--- a/src/JsonSchema/Constraints/FormatConstraint.php
+++ b/src/JsonSchema/Constraints/FormatConstraint.php
@@ -89,8 +89,8 @@ public function check(&$element, $schema = null, JsonPointer $path = null, $i =
                     } elseif (substr($element, 0, 1) === '/') { // absolute-path reference
                         $validURL = filter_var('scheme://host' . $element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE);
                     } elseif (strlen($element)) { // relative-path reference
-                        $pathParts = explode('/', $element, 2)[0];
-                        if ($pathParts[0] !== '.' && strpos($pathParts, ':') !== false) {
+                        $pathParts = explode('/', $element, 2);
+                        if ($pathParts[0][0] !== '.' && strpos($pathParts[0], ':') !== false) {
                             $validURL = null;
                         } else {
                             $validURL = filter_var('scheme://host/' . $element, FILTER_VALIDATE_URL, FILTER_NULL_ON_FAILURE);