fix util exec on test

.travis.yml

@@ -21,7 +21,7 @@ matrix:
   - php: 5.6
     env: PHPUNIT=false
 before_install:
-  - if [ $PHPUNIT = false ]; then php ./tests/travis/remove-require-dev.php; fi
+  - if [ $PHPUNIT = false ]; then php -r "require 'tests/utilities/travis.php'; removeRequireDev();"; fi
 install:
   - composer install
 script:

tests/utilities/travis.php

@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * removes the require-dev section from composer.json
+ * needed for linting in older php platforms
+ */
+function removeRequireDev()
+{
+    $filename = __DIR__.'/../../composer.json';
+
+    $content = file_get_contents($filename);
+
+    $data = json_decode($content, true);
+
+    unset($data['require-dev']);
+
+    $content = json_encode($data);
+
+    file_put_contents($filename, $content);
+}