diff --git a/src/extensions/DatatypeTrait.php b/src/extensions/DatatypeTrait.php
index 9323a2f..ce380c9 100644
--- a/src/extensions/DatatypeTrait.php
+++ b/src/extensions/DatatypeTrait.php
@@ -43,6 +43,8 @@ trait DatatypeTrait {
      * Check data type foreach Column
      * Check data type for each column and returns the most commonly.
      *
+     * Requires PHP >= 5.5
+     *
      * @access public
      *
      * @uses   getDatatypeFromString
diff --git a/tests/methods/ParseTest.php b/tests/methods/ParseTest.php
index 07eb3b7..d48435f 100644
--- a/tests/methods/ParseTest.php
+++ b/tests/methods/ParseTest.php
@@ -137,6 +137,12 @@ class ParseTest extends TestCase
      * @depends testSepRowAutoDetection
      */
     public function testGetColumnDatatypes() {
+        if (!function_exists('array_column')) {
+            // getDatatypes requires array_column, but that
+            // function is only available in PHP >= 5.5
+            return;
+        }
+
         $this->csv->auto(__DIR__ . '/fixtures/datatype.csv');
         $this->csv->getDatatypes();
         $expected = [