From 7dbf3c471293c09ff20bbffeb6557c556ba79b2a Mon Sep 17 00:00:00 2001
From: webimpress <contact@webimpress.com>
Date: Tue, 14 Feb 2017 21:13:42 +0000
Subject: [PATCH] Marked ArrayUtils::filter as deprecated

This method was implemented only for compatibility with PHP <5.6.
Library now supports only PHP 5.6+ so this method is no longer needed.
Removed functionality for PHP <5.6 and marked function as deprecated
since 3.2.0. Added suggestion to use native method `array_filter`.
---
 src/ArrayUtils.php | 27 +++------------------------
 1 file changed, 3 insertions(+), 24 deletions(-)

diff --git a/src/ArrayUtils.php b/src/ArrayUtils.php
index 0e2b738cc..4edcacf11 100644
--- a/src/ArrayUtils.php
+++ b/src/ArrayUtils.php
@@ -292,12 +292,13 @@ public static function merge(array $a, array $b, $preserveNumericKeys = false)
     }
 
     /**
-     * Compatibility Method for array_filter on <5.6 systems
+     * @deprecated Since 3.2.0; use the native array_filter methods
      *
      * @param array $data
      * @param callable $callback
      * @param null|int $flag
      * @return array
+     * @throws Exception\InvalidArgumentException
      */
     public static function filter(array $data, $callback, $flag = null)
     {
@@ -308,28 +309,6 @@ public static function filter(array $data, $callback, $flag = null)
             ));
         }
 
-        if (version_compare(PHP_VERSION, '5.6.0') >= 0) {
-            return array_filter($data, $callback, $flag);
-        }
-
-        $output = [];
-        foreach ($data as $key => $value) {
-            $params = [$value];
-
-            if ($flag === static::ARRAY_FILTER_USE_BOTH) {
-                $params[] = $key;
-            }
-
-            if ($flag === static::ARRAY_FILTER_USE_KEY) {
-                $params = [$key];
-            }
-
-            $response = call_user_func_array($callback, $params);
-            if ($response) {
-                $output[$key] = $value;
-            }
-        }
-
-        return $output;
+        return array_filter($data, $callback, $flag);
     }
 }