Use CDATA tags for content of screen tags (#4224)

install/pecl.xml

@@ -99,11 +99,11 @@
      To download straight from <acronym>SVN</acronym>,
      the following sequence of commands may be used:
     </simpara>
-    <para>
-     <screen>
+    <screen>
+<![CDATA[
 $ svn checkout https://svn.php.net/repository/pecl/extname/trunk extname
-     </screen>
-    </para>
+]]>
+    </screen>
    </listitem>
    <listitem>
     <simpara>
@@ -331,11 +331,11 @@ Loaded Configuration File   C:\Program Files\PHP\8.2\php.ini
    <link xlink:href="&url.php.pear.cli;">pecl command</link>,
    do the following:
   </simpara>
-  <para>
-   <screen>
+  <screen>
+<![CDATA[
 $ pecl install extname
-   </screen>
-  </para>
+]]>
+  </screen>
   <simpara>
    This will download the source for <emphasis>extname</emphasis>,
    compile, and install <filename>extname.so</filename> into the
@@ -352,19 +352,19 @@ $ pecl install extname
    a <literal>beta</literal> package may be installed using the following
    command:
   </simpara>
-  <para>
-   <screen>
+  <screen>
+<![CDATA[
 $ pecl install extname-beta
-   </screen>
-  </para>
+]]>
+  </screen>
   <para>
    A specific version may also be installed using this variant:
   </para>
-  <para>
-   <screen>
+  <screen>
+<![CDATA[
 $ pecl install extname-0.1
-   </screen>
-  </para>
+]]>
+  </screen>
   <note>
    <para>
     After enabling the extension in &php.ini;, restarting the web service is
@@ -558,17 +558,17 @@ $ mv extname-x.x.x extname
   <simpara>
    This will result in the following directory:
   </simpara>
-  <para>
-   <screen>
-    /path/to/php/src/dir/ext/extname
-   </screen>
-  </para>
+  <screen>
+<![CDATA[
+/path/to/php/src/dir/ext/extname
+]]>
+  </screen>
   <simpara>
    From here, PHP needs to be forced to rebuild the configure script, and then
    it can be built as normal:
   </simpara>
-  <para>
-   <screen>
+  <screen>
+<![CDATA[
 $ cd /path/to/php/src/dir
 $ rm configure
 $ ./buildconf --force
@@ -576,8 +576,8 @@ $ ./configure --help
 $ ./configure --with-extname --enable-someotherext --with-foobar
 $ make
 $ make install
-   </screen>
-  </para>
+]]>
+  </screen>
   <note>
    <simpara>
     To run the <command>buildconf</command> script, the
@@ -601,11 +601,11 @@ $ make install
    <option role="configure">--enable</option>.
    To be sure, run the following after <command>buildconf</command>:
   </simpara>
-  <para>
-   <screen>
+  <screen>
+<![CDATA[
 $ ./configure --help | grep extname
-   </screen>
-  </para>
+]]>
+  </screen>
  </sect1>
 </chapter>