Modernize array syntax, use var_dump over print_r for example php#1

Author: tiffany-taylor

reference/array/functions/array-unshift.xml

@@ -84,22 +84,29 @@
     <programlisting role="php">
 <![CDATA[
 <?php
-$queue = array("orange", "banana");
+$queue = [
+    "orange", 
+    "banana"
+];
+
 array_unshift($queue, "apple", "raspberry");
-print_r($queue);
+var_dump($queue);
 ?>
 ]]>
     </programlisting>
     &example.outputs;
     <screen role="php">
 <![CDATA[
-Array
-(
-    [0] => apple
-    [1] => raspberry
-    [2] => orange
-    [3] => banana
-)
+array(4) {
+  [0] =>
+  string(5) "apple"
+  [1] =>
+  string(9) "raspberry"
+  [2] =>
+  string(6) "orange"
+  [3] =>
+  string(6) "banana"
+}
 ]]>
     </screen>
    </example>