<s k="echo" />
<s k="else" />
<s k="elseif" />
+<s k="empty" />
<s k="enddeclare" />
<s k="endfor" />
<s k="endforeach" />
<s k="extends" />
<s k="final" />
<s k="for" />
+<s k="foreach" />
<s k="function" />
<s k="global" />
<s k="goto" />
<s k="if" />
+<s k="isset" />
<s k="implements" />
<s k="interface" />
<s k="instanceof" />