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diff --git a/vendor/symfony/polyfill-php55/Php55ArrayColumn.php b/vendor/symfony/polyfill-php55/Php55ArrayColumn.php
new file mode 100644
index 000000000..a3033d83e
--- /dev/null
+++ b/vendor/symfony/polyfill-php55/Php55ArrayColumn.php
@@ -0,0 +1,64 @@
+<?php
+
+/*
+ *   Copyright (c) 2013 Ben Ramsey <http://benramsey.com>
+ *
+ *   Permission is hereby granted, free of charge, to any person obtaining a
+ *   copy of this software and associated documentation files (the "Software"),
+ *   to deal in the Software without restriction, including without limitation
+ *   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *   and/or sell copies of the Software, and to permit persons to whom the
+ *   Software is furnished to do so, subject to the following conditions:
+ *
+ *   The above copyright notice and this permission notice shall be included in
+ *   all copies or substantial portions of the Software.
+ *
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ *   DEALINGS IN THE SOFTWARE.
+ */
+
+namespace Symfony\Polyfill\Php55;
+
+/**
+ * @internal
+ */
+final class Php55ArrayColumn
+{
+    public static function array_column(array $input, $columnKey, $indexKey = null)
+    {
+        $output = array();
+
+        foreach ($input as $row) {
+            $key = $value = null;
+            $keySet = $valueSet = false;
+
+            if ($indexKey !== null && array_key_exists($indexKey, $row)) {
+                $keySet = true;
+                $key = (string) $row[$indexKey];
+            }
+
+            if ($columnKey === null) {
+                $valueSet = true;
+                $value = $row;
+            } elseif (is_array($row) && array_key_exists($columnKey, $row)) {
+                $valueSet = true;
+                $value = $row[$columnKey];
+            }
+
+            if ($valueSet) {
+                if ($keySet) {
+                    $output[$key] = $value;
+                } else {
+                    $output[] = $value;
+                }
+            }
+        }
+
+        return $output;
+    }
+}