Rework the examples for continue (#2367)

Co-authored-by: Kamil Tekiela <tekiela246@gmail.com>

language/control-structures/continue.xml

@@ -33,29 +33,63 @@
    <programlisting role="php">
 <![CDATA[
 <?php
+$arr = ['zero', 'one', 'two', 'three', 'four', 'five', 'six'];
 foreach ($arr as $key => $value) {
-    if (!($key % 2)) { // skip even members
+    if (0 === ($key % 2)) { // skip members with even key
         continue;
     }
-    do_something_odd($value);
-}
-
-$i = 0;
-while ($i++ < 5) {
-    echo "Outer<br />\n";
-    while (1) {
-        echo "Middle<br />\n";
-        while (1) {
-            echo "Inner<br />\n";
-            continue 3;
-        }
-        echo "This never gets output.<br />\n";
-    }
-    echo "Neither does this.<br />\n";
+    echo $value . "\n";
 }
 ?>
 ]]>
    </programlisting>
+   &examples.outputs;
+   <screen>
+<![CDATA[
+one
+three
+five
+]]>
+   </screen>
+   <programlisting role="php">
+<![CDATA[
+<?php
+$i = 0;
+while ($i++ < 5) {
+    echo "Outer\n";
+    while (1) {
+        echo "Middle\n";
+        while (1) {
+            echo "Inner\n";
+            continue 3;
+        }
+        echo "This never gets output.\n";
+    }
+    echo "Neither does this.\n";
+}
+?>
+]]>
+   </programlisting>
+   &examples.outputs;
+   <screen>
+<![CDATA[
+Outer
+Middle
+Inner
+Outer
+Middle
+Inner
+Outer
+Middle
+Inner
+Outer
+Middle
+Inner
+Outer
+Middle
+Inner
+]]>
+   </screen>
   </informalexample>
  </para>
  <para>