diff --git a/composer.json b/composer.json
index 6481b14..bca3419 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,10 @@
     "description": "ArrayObject class that implements array functions through __call",
     "type": "library",
     "require": {
-        "php": ">=5.3.29"
+        "php": ">=5.3.29",
+        "symfony/polyfill-php54": "^1.2",
+        "symfony/polyfill-php55": "^1.2",
+        "symfony/polyfill-php56": "^1.2"
     },
     "require-dev": {
         "phpunit/phpunit": "*",
diff --git a/composer.lock b/composer.lock
index bcc5a6b..9215bea 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,9 +4,274 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "c4a8517082616e964929c7beaaf2beff",
-    "content-hash": "1ed802871c0a99dc553de92f9b7e4ad0",
-    "packages": [],
+    "hash": "5da3f055fabd5e44bb25a547d0aea8de",
+    "content-hash": "623968123c52d5ef08b66b52671f3c04",
+    "packages": [
+        {
+            "name": "ircmaxell/password-compat",
+            "version": "v1.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ircmaxell/password_compat.git",
+                "reference": "5c5cde8822a69545767f7c7f3058cb15ff84614c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ircmaxell/password_compat/zipball/5c5cde8822a69545767f7c7f3058cb15ff84614c",
+                "reference": "5c5cde8822a69545767f7c7f3058cb15ff84614c",
+                "shasum": ""
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "lib/password.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Anthony Ferrara",
+                    "email": "ircmaxell@php.net",
+                    "homepage": "http://blog.ircmaxell.com"
+                }
+            ],
+            "description": "A compatibility library for the proposed simplified password hashing algorithm: https://wiki.php.net/rfc/password_hash",
+            "homepage": "https://github.com/ircmaxell/password_compat",
+            "keywords": [
+                "hashing",
+                "password"
+            ],
+            "time": "2014-11-20 16:49:30"
+        },
+        {
+            "name": "symfony/polyfill-php54",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php54.git",
+                "reference": "34d761992f6f2cc6092cc0e5e93f38b53ba5e4f1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php54/zipball/34d761992f6f2cc6092cc0e5e93f38b53ba5e4f1",
+                "reference": "34d761992f6f2cc6092cc0e5e93f38b53ba5e4f1",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php54\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ],
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 5.4+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2016-05-18 14:26:46"
+        },
+        {
+            "name": "symfony/polyfill-php55",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php55.git",
+                "reference": "bf2ff9ad6be1a4772cb873e4eea94d70daa95c6d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php55/zipball/bf2ff9ad6be1a4772cb873e4eea94d70daa95c6d",
+                "reference": "bf2ff9ad6be1a4772cb873e4eea94d70daa95c6d",
+                "shasum": ""
+            },
+            "require": {
+                "ircmaxell/password-compat": "~1.0",
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php55\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 5.5+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2016-05-18 14:26:46"
+        },
+        {
+            "name": "symfony/polyfill-php56",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php56.git",
+                "reference": "3edf57a8fbf9a927533344cef65ad7e1cf31030a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php56/zipball/3edf57a8fbf9a927533344cef65ad7e1cf31030a",
+                "reference": "3edf57a8fbf9a927533344cef65ad7e1cf31030a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3",
+                "symfony/polyfill-util": "~1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php56\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 5.6+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2016-05-18 14:26:46"
+        },
+        {
+            "name": "symfony/polyfill-util",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-util.git",
+                "reference": "ef830ce3d218e622b221d6bfad42c751d974bf99"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-util/zipball/ef830ce3d218e622b221d6bfad42c751d974bf99",
+                "reference": "ef830ce3d218e622b221d6bfad42c751d974bf99",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Util\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony utilities for portability of PHP codes",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compat",
+                "compatibility",
+                "polyfill",
+                "shim"
+            ],
+            "time": "2016-05-18 14:26:46"
+        }
+    ],
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
diff --git a/tests/Sikofitt/Tests/ArrayObjectArrayTest.php b/tests/Sikofitt/Tests/ArrayObjectArrayTest.php
index ba621bf..6a2f2ba 100644
--- a/tests/Sikofitt/Tests/ArrayObjectArrayTest.php
+++ b/tests/Sikofitt/Tests/ArrayObjectArrayTest.php
@@ -243,10 +243,10 @@ class ArrayObjectArrayTest extends \PHPUnit_Framework_TestCase
         $this->assertSame(array_chunk($this->workingArray, 2), $this->arrayObjectArray->array_chunk(2));
         $this->assertSame(array_chunk($this->workingArray, 2, true), $this->arrayObjectArray->array_chunk(2, true));
         // array_column
-        if (PHP_VERSION_ID >= 50500) {
+        //if (PHP_VERSION_ID >= 50500) {
             $this->assertSame(array_column($this->workingMultiArray, 'first_name'), $this->arrayObjectArrayMulti->array_column('first_name'));
             $this->assertSame(array_column($this->workingMultiArray, 'first_name', 'id'), $this->arrayObjectArrayMulti->array_column('first_name', 'id'));
-        }
+        //}
         // array_combine
         $this->assertSame(array_combine($this->singleArrayOne, $this->singleArrayTwo), $this->arrayObjectSingle->array_combine($this->singleArrayTwo));
         // array_count_values
@@ -266,11 +266,9 @@ class ArrayObjectArrayTest extends \PHPUnit_Framework_TestCase
         // array_fill
         $this->assertSame(array_fill(5, 6, 'banana'), $this->arrayObjectArray->array_fill(5, 6, 'banana'));
         // array_filter
-        if (!defined('ARRAY_FILTER_USE_BOTH')) {
-            define('ARRAY_FILTER_USE_BOTH', 1);
-        }
         $this->assertSame(array_filter($this->workingMultiArray), $this->arrayObjectArrayMulti->array_filter());
         $this->assertSame(array_filter($this->workingMultiArray, $array_filter), $this->arrayObjectArrayMulti->array_filter($array_filter));
+        // The third parameter was added in php 5.6
         if (PHP_VERSION_ID >= 50600) {
             $this->assertSame(array_filter($this->workingMultiArray, $array_filter, ARRAY_FILTER_USE_BOTH), $this->arrayObjectArrayMulti->array_filter($array_filter, ARRAY_FILTER_USE_BOTH));
             $this->assertSame(array_filter($this->workingMultiArray, $array_filter, ARRAY_FILTER_USE_KEY), $this->arrayObjectArrayMulti->array_filter($array_filter, ARRAY_FILTER_USE_KEY));