1<documentation title="Scope Indentation">
2    <standard>
3    <![CDATA[
4    Indentation for control structures, classes, and functions should be 4 spaces per level.
5    ]]>
6    </standard>
7    <code_comparison>
8        <code title="Valid: 4 spaces are used to indent a control structure.">
9        <![CDATA[
10if ($test) {
11<em>    </em>$var = 1;
12}
13        ]]>
14        </code>
15        <code title="Invalid: 8 spaces are used to indent a control structure.">
16        <![CDATA[
17if ($test) {
18<em>        </em>$var = 1;
19}
20        ]]>
21        </code>
22    </code_comparison>
23</documentation>
24