Updated php minimum version to 7.0.

Updated PHPUnit to 6.0.
Removed php 5.x support.

.travis.yml

@@ -1,7 +1,6 @@
 language: php
 
 php:
-    - 5.6
     - 7
     - hhvm
 
@@ -15,5 +14,3 @@ script:
 
 matrix:
   fast_finish: true
-  allow_failures:
-    - php: 7

README.md

@@ -45,7 +45,7 @@ for more details.
 Requirements
 ------------
 
-* PHP CLI 5.3+
+* PHP CLI 7.0+
 * [PHP-Parser](https://github.com/nikic/PHP-Parser)
 
 Acknowledgements

buildPHAR.php

@@ -2,24 +2,6 @@
 
 $phar = new Phar('build/phpctags.phar', 0, 'phpctags.phar');
 
-if (version_compare(PHP_VERSION, '5.4.0') < 0) {
-    class RecursiveCallbackFilterIterator extends RecursiveFilterIterator {
-        public function __construct ( RecursiveIterator $iterator, $callback ) {
-            $this->callback = $callback;
-            parent::__construct($iterator);
-        }
-
-        public function accept () {
-            $callback = $this->callback;
-            return $callback(parent::current(), parent::key(), parent::getInnerIterator());
-        }
-
-        public function getChildren () {
-            return new self($this->getInnerIterator()->getChildren(), $this->callback);
-        }
-    }
-}
-
 $phar->buildFromIterator(
     new RecursiveIteratorIterator(
         new RecursiveCallbackFilterIterator(

composer.json

@@ -4,11 +4,11 @@
     "keywords": ["ctags"],
     "type": "library",
     "require": {
-        "php": ">=5.3",
-        "nikic/php-parser": "^4.0"
+        "php": ">=7.0",
+        "nikic/php-parser": "^4.5"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4"
+        "phpunit/phpunit": "^6.5"
     },
     "autoload": {
         "classmap": ["PHPCtags.class.php"]

tests/Acceptance/AcceptanceTestCase.php

@@ -3,11 +3,11 @@
 namespace tests\PHPCTags\Acceptance;
 
 use Exception;
-use PHPUnit_Framework_TestCase;
+use PHPUnit\Framework\TestCase;
 use RecursiveDirectoryIterator;
 use RecursiveIteratorIterator;
 
-abstract class AcceptanceTestCase extends PHPUnit_Framework_TestCase
+abstract class AcceptanceTestCase extends TestCase
 {
     const FORMAT = "<name>\t<file>\t/^<line content>$/;\"\t<short kind>\tline:<line number>\t<scope>\t<access>";