php保留关键字

__ FILE__
__LINE__
__FUNCTION__
__CLASS__
__METHOD__
and
array()
as
break
case
class
const
continue
declare
default
die()
do
echo()
else
elseif
empty()
enddeclare
endfor
endforeach
endif
endswitch
endwhile
eval_r()
exit()
extends
for
foreach
function
global
if
include()
include_once()
isset()
list()
new
or
print()
require()
require_once()
return()
static
switch
unset()
use
var
while
xor
exception (PHP 5)
final (PHP 5)
php_user_filter (PHP 5)
interface (PHP 5)
implements (PHP 5)
extends
public (PHP 5)
private (PHP 5)
protected (PHP 5)
abstract (PHP 5)
clone (PHP 5)
try (PHP 5)
catch (PHP 5)
throw (PHP 5)
cfunction (PHP 4 only)
old_function (PHP 4 only)
this (PHP 5 only)