<documentation title="Unconditional If Statements">
    <standard>
    <![CDATA[
    If statements that are always evaluated should not be used.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: An if statement that only executes conditionally.">
        <![CDATA[
if (<em>$test</em>) {
    $var = 1;
}
        ]]>
        </code>
        <code title="Invalid: An if statement that is always performed.">
        <![CDATA[
if (<em>true</em>) {
    $var = 1;
}
        ]]>
        </code>
    </code_comparison>
    <code_comparison>
        <code title="Valid: An if statement that only executes conditionally.">
        <![CDATA[
if (<em>$test</em>) {
    $var = 1;
}
        ]]>
        </code>
        <code title="Invalid: An if statement that is never performed.">
        <![CDATA[
if (<em>false</em>) {
    $var = 1;
}
        ]]>
        </code>
    </code_comparison>
</documentation>