1<documentation title="Lowercase Control Structure Keywords">
2    <standard>
3    <![CDATA[
4    The php keywords if, else, elseif, foreach, for, do, switch, while, try, and catch should be lowercase.
5    ]]>
6    </standard>
7    <code_comparison>
8        <code title="Valid: Lowercase if keyword.">
9        <![CDATA[
10<em>if</em> ($foo) {
11    $bar = true;
12}
13]]>
14        </code>
15        <code title="Invalid: Uppercase if keyword.">
16        <![CDATA[
17<em>IF</em> ($foo) {
18    $bar = true;
19}
20]]>
21        </code>
22    </code_comparison>
23</documentation>
24