<documentation title="Unused function parameters">
<standard>
<![CDATA[
All parameters in a functions signature should be used within the function.
]]>
</standard>
<code_comparison>
<code title="Valid: All the parameters are used.">
<![CDATA[
function addThree($a, $b, $c)
{
return <em>$a + $b + $c</em>;
}
]]>
</code>
<code title="Invalid: One of the parameters is not being used.">
<![CDATA[
function addThree($a, $b, $c)
{
return <em>$a + $b</em>;
}
]]>
</code>
</code_comparison>
</documentation>