1<documentation title="Closing PHP Tags"> 2 <standard> 3 <![CDATA[ 4 All opening php tags should have a corresponding closing tag. 5 ]]> 6 </standard> 7 <code_comparison> 8 <code title="Valid: A closing tag paired with it's opening tag."> 9 <![CDATA[ 10<em><?php</em> 11echo 'Foo'; 12<em>?></em> 13 ]]> 14 </code> 15 <code title="Invalid: No closing tag paired with the opening tag."> 16 <![CDATA[ 17<em><?php</em> 18echo 'Foo'; 19 ]]> 20 </code> 21 </code_comparison> 22</documentation> 23