diff --git a/CHANGELOG b/CHANGELOG
index 7c782bd64..dfdb17c0c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,6 @@
 * 2.8.0 (2019-XX-XX)
 
- * add "column" filter
+ * added the "column" filter
 
 * 2.7.4 (2019-03-23)
 
diff --git a/src/ExpressionParser.php b/src/ExpressionParser.php
index 38cbdd8a2..18eecf414 100644
--- a/src/ExpressionParser.php
+++ b/src/ExpressionParser.php
@@ -13,6 +13,7 @@
 namespace Twig;
 
 use Twig\Error\SyntaxError;
+use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\ArrayExpression;
 use Twig\Node\Expression\AssignNameExpression;
 use Twig\Node\Expression\Binary\ConcatBinary;
@@ -23,12 +24,11 @@ use Twig\Node\Expression\GetAttrExpression;
 use Twig\Node\Expression\MethodCallExpression;
 use Twig\Node\Expression\NameExpression;
 use Twig\Node\Expression\ParentExpression;
+use Twig\Node\Expression\TestExpression;
 use Twig\Node\Expression\Unary\NegUnary;
 use Twig\Node\Expression\Unary\NotUnary;
 use Twig\Node\Expression\Unary\PosUnary;
 use Twig\Node\Node;
-use Twig\Node\Expression\AbstractExpression;
-use Twig\Node\Expression\TestExpression;
 
 /**
  * Parses expressions.
diff --git a/src/Extension/CoreExtension.php b/src/Extension/CoreExtension.php
index 09ae1bd81..3d0bba536 100644
--- a/src/Extension/CoreExtension.php
+++ b/src/Extension/CoreExtension.php
@@ -1319,11 +1319,11 @@ function twig_to_array($seq, $preserveKeys = true)
         return iterator_to_array($seq, $preserveKeys);
     }
 
-    if (!is_array($seq)) {
+    if (!\is_array($seq)) {
         return (array) $seq;
     }
 
-    if(!$preserveKeys) {
+    if (!$preserveKeys) {
         return array_values($seq);
     }
 
@@ -1484,7 +1484,7 @@ function twig_array_batch($items, $size, $fill = null, $preserveKeys = true)
     if (null !== $fill && $result) {
         $last = \count($result) - 1;
         if ($fillCount = $size - \count($result[$last])) {
-            for ($i = 0; $i < $fillCount; $i++) {
+            for ($i = 0; $i < $fillCount; ++$i) {
                 $result[$last][] = $fill;
             }
         }
@@ -1687,7 +1687,7 @@ function twig_get_attribute(Environment $env, Source $source, $object, $item, ar
 }
 
 /**
- * Return the values from a single column in the input array.
+ * Returns the values from a single column in the input array.
  *
  * <pre>
  *  {% set items = [{ 'fruit' : 'apple'}, {'fruit' : 'orange' }] %}
@@ -1697,20 +1697,19 @@ function twig_get_attribute(Environment $env, Source $source, $object, $item, ar
  *  {# fruits now contains ['apple', 'orange'] #}
  * </pre>
  *
- * @param array|Traversable $arr        An array
- * @param mixed             $column_key The column key
+ * @param array|Traversable $array An array
+ * @param mixed             $name  The column name
  *
  * @return array The array of values
  */
-function twig_array_column($arr, $column_key)
+function twig_array_column($array, $name): array
 {
-    if ($arr instanceof Traversable) {
-        $arr = \iterator_to_array($arr);
-    } elseif (!\is_array($arr)) {
-        throw new RuntimeError(sprintf('The column filter only works with arrays or "Traversable", got "%s" as first argument.', \gettype($arr)));
+    if ($array instanceof Traversable) {
+        $array = iterator_to_array($array);
+    } elseif (!\is_array($array)) {
+        throw new RuntimeError(sprintf('The column filter only works with arrays or "Traversable", got "%s" as first argument.', \gettype($array)));
     }
 
-    return \array_column($arr, $column_key);
+    return array_column($array, $name);
 }
-
 }
diff --git a/src/Node/Expression/CallExpression.php b/src/Node/Expression/CallExpression.php
index 131d78e46..64de6ae4f 100644
--- a/src/Node/Expression/CallExpression.php
+++ b/src/Node/Expression/CallExpression.php
@@ -257,7 +257,7 @@ abstract class CallExpression extends AbstractExpression
             $argument = end($parameters);
             if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && [] === $argument->getDefaultValue()) {
                 array_pop($parameters);
-            } else if ($argument && $argument->isVariadic()) {
+            } elseif ($argument && $argument->isVariadic()) {
                 array_pop($parameters);
                 $isPhpVariadic = true;
             } else {
diff --git a/src/Template.php b/src/Template.php
index c28f2b5a0..9cf96952d 100644
--- a/src/Template.php
+++ b/src/Template.php
@@ -310,7 +310,7 @@ abstract class Template
             }
 
             if ($template === $this->getTemplateName()) {
-                $class = get_class($this);
+                $class = \get_class($this);
                 if (false !== $pos = strrpos($class, '___', -1)) {
                     $class = substr($class, 0, $pos);
                 }