Enable runnable (WASM) examples for language.control-structures section

language/control-structures.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<chapter xml:id="language.control-structures" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
+<chapter xml:id="language.control-structures" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" annotations="interactive">
  <title>Control Structures</title>
 
  <sect1 xml:id="control-structures.intro">

language/control-structures/alternative-syntax.xml

@@ -17,11 +17,19 @@
   <informalexample>
    <programlisting role="php">
 <![CDATA[
-<?php if ($a == 5): ?>
+<?php
+$a = 5;
+if ($a == 5): ?>
 A is equal to 5
 <?php endif; ?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+A is equal to 5
+]]>
+   </screen>
   </informalexample>
  </para>
  <simpara>
@@ -38,6 +46,7 @@ A is equal to 5
    <programlisting role="php">
 <![CDATA[
 <?php
+$a = 5;
 if ($a == 5):
     echo "a equals 5";
     echo "...";
@@ -47,9 +56,14 @@ elseif ($a == 6):
 else:
     echo "a is neither 5 nor 6";
 endif;
-?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+a equals 5...
+]]>
+   </screen>
   </informalexample>
  </para>
  <note>
@@ -66,12 +80,20 @@ endif;
   <informalexample>
    <programlisting role="php">
 <![CDATA[
-<?php switch ($foo): ?>
+<?php
+$foo = 1;
+switch ($foo): ?>
     <?php case 1: ?>
-    // ...
+    Foo is 1
 <?php endswitch; ?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+Parse error: syntax error, unexpected T_INLINE_HTML "    ", expecting "endswitch" or "case" or "default" in script on line 4
+]]>
+   </screen>
   </informalexample>
   <para>
    Whereas this is valid, as the trailing newline after the
@@ -82,12 +104,20 @@ endif;
   <informalexample>
    <programlisting role="php">
 <![CDATA[
-<?php switch ($foo): ?>
+<?php
+$foo = 1;
+switch ($foo): ?>
 <?php case 1: ?>
-    ...
+    Foo is 1
 <?php endswitch; ?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+    Foo is 1
+]]>
+   </screen>
   </informalexample>
  </warning>
  <para>

language/control-structures/break.xml

@@ -26,27 +26,61 @@ foreach ($arr as $val) {
     if ($val == 'stop') {
         break;    /* You could also write 'break 1;' here. */
     }
-    echo "$val<br />\n";
+    echo "$val\n";
 }
-
-/* Using the optional argument. */
-
+]]>
+   </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+one
+two
+three
+four
+]]>
+   </screen>
+  </informalexample>
+ </para>
+ <simpara>
+  Using the optional argument:
+ </simpara>
+ <para>
+  <informalexample>
+   <programlisting role="php">
+<![CDATA[
+<?php
 $i = 0;
 while (++$i) {
     switch ($i) {
         case 5:
-            echo "At 5<br />\n";
+            echo "At 5\n";
             break 1;  /* Exit only the switch. */
         case 10:
-            echo "At 10; quitting<br />\n";
+            echo "At 10; quitting\n";
             break 2;  /* Exit the switch and the while. */
         default:
             break;
     }
+    echo "$i\n";
 }
-?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+1
+2
+3
+4
+At 5
+5
+6
+7
+8
+9
+At 10; quitting
+]]>
+   </screen>
   </informalexample>
  </para>
 

language/control-structures/continue.xml

@@ -16,7 +16,7 @@
    considered a looping structure for the purposes of
    <literal>continue</literal>. <literal>continue</literal> behaves like
    <literal>break</literal> (when no arguments are passed) but will
-   raise a warning as this is likely to be a mistake. If a 
+   raise a warning as this is likely to be a mistake. If a
    <literal>switch</literal> is inside a loop,
    <literal>continue 2</literal> will continue with the next iteration
    of the outer loop.
@@ -40,7 +40,6 @@ foreach ($arr as $key => $value) {
     }
     echo $value . "\n";
 }
-?>
 ]]>
    </programlisting>
    &examples.outputs;
@@ -67,7 +66,6 @@ while ($i++ < 5) {
     }
     echo "Neither does this.\n";
 }
-?>
 ]]>
    </programlisting>
    &examples.outputs;
@@ -88,36 +86,6 @@ Inner
 Outer
 Middle
 Inner
-]]>
-   </screen>
-  </informalexample>
- </para>
- <para>
-  Omitting the semicolon after <literal>continue</literal> can lead to
-  confusion. Here's an example of what you shouldn't do.
- </para>
- <para>
-  <informalexample>
-   <programlisting role="php">
-<![CDATA[
-<?php
-for ($i = 0; $i < 5; ++$i) {
-    if ($i == 2)
-        continue
-    print "$i\n";
-}
-?>
-]]>
-   </programlisting>
-   <para>
-    One can expect the result to be:
-   </para>
-   <screen>
-<![CDATA[
-0
-1
-3
-4
 ]]>
    </screen>
   </informalexample>
@@ -136,7 +104,7 @@ for ($i = 0; $i < 5; ++$i) {
      <row>
       <entry>7.3.0</entry>
       <entry>
-       <literal>continue</literal> within a <literal>switch</literal> that is attempting to act like a <literal>break</literal> statement for the 
+       <literal>continue</literal> within a <literal>switch</literal> that is attempting to act like a <literal>break</literal> statement for the
        <literal>switch</literal> will trigger an <constant>E_WARNING</constant>.
       </entry>
      </row>

language/control-structures/declare.xml

@@ -36,7 +36,7 @@ declare (directive)
   be given as directive values. Variables and constants cannot be used. To
   illustrate:
   <informalexample>
-   <programlisting role="php">
+   <programlisting role="php" annotations="non-interactive">
 <![CDATA[
 <?php
 // This is valid:
@@ -45,7 +45,6 @@ declare(ticks=1);
 // This is invalid:
 const TICK_VALUE = 1;
 declare(ticks=TICK_VALUE);
-?>
 ]]>
    </programlisting>
   </informalexample>
@@ -63,7 +62,7 @@ declare(ticks=TICK_VALUE);
   <literal>declare</literal> was included then it does not affect the parent
   file).
   <informalexample>
-   <programlisting role="php">
+   <programlisting role="php" annotations="non-interactive">
 <![CDATA[
 <?php
 // these are the same:
@@ -76,7 +75,6 @@ declare(ticks=1) {
 // or you can use this:
 declare(ticks=1);
 // entire script here
-?>
 ]]>
    </programlisting>
   </informalexample>
@@ -123,12 +121,20 @@ $a = 1; // causes a tick event
 
 if ($a > 0) {
     $a += 2; // causes a tick event
-    print $a; // causes a tick event
+    print $a . "\n"; // causes a tick event
 }
-
-?>
 ]]>
    </programlisting>
+  &example.outputs;
+   <screen>
+<![CDATA[
+tick_handler() called
+tick_handler() called
+tick_handler() called
+3
+tick_handler() called
+]]>
+   </screen>
   </example>
  </para>
  <simpara>
@@ -142,12 +148,11 @@ if ($a > 0) {
     A script's encoding can be specified per-script using the <literal>encoding</literal> directive.
   <example>
    <title>Declaring an encoding for the script</title>
-    <programlisting role="php">
+    <programlisting role="php" annotations="non-interactive">
 <![CDATA[
 <?php
 declare(encoding='ISO-8859-1');
 // code here
-?>
 ]]>
     </programlisting>
    </example>

language/control-structures/do-while.xml

@@ -28,9 +28,14 @@ $i = 0;
 do {
     echo $i;
 } while ($i > 0);
-?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+0
+]]>
+   </screen>
   </informalexample>
  </para>
  <simpara>
@@ -50,23 +55,32 @@ do {
    <programlisting role="php">
 <![CDATA[
 <?php
+$i = 50;
+$factor = 0.5;
+$minimum_limit = 20;
 do {
     if ($i < 5) {
-        echo "i is not big enough";
+        echo "i is not big enough\n";
         break;
     }
     $i *= $factor;
     if ($i < $minimum_limit) {
+        echo "i is less than minimum limit after factor\n";
         break;
     }
-    echo "i is ok";
+    echo $i ." is ok\n";
 
     /* process i */
 
 } while (0);
-?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+25 is ok
+]]>
+   </screen>
   </informalexample>
  </para>
  <simpara>