<documentation title="Space Before Cast">
    <standard>
    <![CDATA[
    There should be exactly one space before a cast operator.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: Single space before a cast operator.">
        <![CDATA[
$integer =<em> </em>(int) $string;
$c = $a .<em> </em>(string) $b;
        ]]>
        </code>
        <code title="Invalid: No space or multiple spaces before a cast operator.">
        <![CDATA[
$integer =<em></em>(int) $string;
$c = $a .<em>   </em>(string) $b;
        ]]>
        </code>
    </code_comparison>
</documentation>