diff --git a/.travis.yml b/.travis.yml
index bd090ad6..0faf5d5b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 language: php
 
 php:
+  - 5.3
   - 5.4
   - 5.5
   - 5.6
@@ -16,6 +17,8 @@ env:
 
 matrix:
   exclude:
+    - php: 5.3
+      env: DRUPAL_VERSION=8
     - php: 5.4
       env: DRUPAL_VERSION=8
     - php: 5.6
@@ -33,7 +36,10 @@ install:
   # Use the example composer.json file for Drupal 8.
   - test ${DRUPAL_VERSION} -eq 8 && cp doc/_static/composer.json.d8 ./composer.json || true
   - composer install
-  - composer global require drush/drush:dev-master --prefer-source
+  # Drush version must vary depending on environment and version of core.
+  - test ${DRUPAL_VERSION} -eq 8 && composer global require drush/drush:dev-master --prefer-source || test ${TRAVIS_PHP_VERSION} -eq 5.3 && composer global require drush/drush:~6.0 || composer global require drush/drush:~7.0
+  # PHP 5.3 requires the cgi extension for runserver.
+  - test ${TRAVIS_PHP_VERSION} -eq 5.3 && pecl install cgi || true
   - npm install
 
 before_script:
@@ -63,6 +69,7 @@ before_script:
   - sleep 4s
 
 script:
+  - find ./src -name "*.php" -print0 | xargs -0 -n1 -P8 php -l
   - vendor/bin/phpspec run -f pretty --no-interaction
   - vendor/bin/behat -fprogress --strict
   - vendor/bin/behat -fprogress --profile=drupal${DRUPAL_VERSION} --strict
diff --git a/features/bootstrap/FeatureContext.php b/features/bootstrap/FeatureContext.php
index a55ea861..41f92eda 100644
--- a/features/bootstrap/FeatureContext.php
+++ b/features/bootstrap/FeatureContext.php
@@ -107,12 +107,12 @@ public function afterUserCreate(EntityScope $scope) {
    * @Transform table:name,mail,street,city,postcode,country
    */
   public function castUsersTable(TableNode $user_table) {
-    $aliases = [
+    $aliases = array(
       'country' => 'field_post_address:country',
       'city' => 'field_post_address:locality',
       'street' => 'field_post_address:thoroughfare',
       'postcode' => 'field_post_address:postal_code',
-    ];
+    );
 
     // The first row of the table contains the field names.
     $table = $user_table->getTable();
diff --git a/src/Drupal/DrupalExtension/Context/RawDrupalContext.php b/src/Drupal/DrupalExtension/Context/RawDrupalContext.php
index 2e779d08..cdff0950 100644
--- a/src/Drupal/DrupalExtension/Context/RawDrupalContext.php
+++ b/src/Drupal/DrupalExtension/Context/RawDrupalContext.php
@@ -285,7 +285,7 @@ public function nodeCreate($node) {
    */
   public function parseEntityFields($entity_type, \stdClass $entity) {
     $multicolumn_field = '';
-    $multicolumn_fields = [];
+    $multicolumn_fields = array();
 
     foreach ($entity as $field => $field_value) {
       // Reset the multicolumn field if the field name does not contain a column.
@@ -312,12 +312,12 @@ public function parseEntityFields($entity_type, \stdClass $entity) {
       $field_name = $multicolumn_field ?: $field;
       if ($this->getDriver()->isField($entity_type, $field_name)) {
         // Split up multiple values in multi-value fields.
-        $values = [];
+        $values = array();
         foreach (explode(', ', $field_value) as $key => $value) {
           $columns = $value;
           // Split up field columns if the ' - ' separator is present.
           if (strstr($value, ' - ') !== FALSE) {
-            $columns = [];
+            $columns = array();
             foreach (explode(' - ', $value) as $column) {
               // Check if it is an inline named column.
               if (!$is_multicolumn && strpos($column, ': ', 1) !== FALSE) {