PHP Programming/Reserved words
PHP words
editList of the 72 reserved words by alphabetical order:
__CLASS__
__DIR__
__FILE__
__FUNCTION__
__LINE__
__METHOD__
__NAMESPACE__
abstract
and
array()
as
break
case
catch
cfunction ''(PHP 4)''
class
clone
const
continue
declare
default
die()
do
echo()
else
elseif
empty()
enddeclare
endfor
endforeach
endif
endswitch
endwhile
eval()
exit()
explode()
extends
final
for
foreach
function
global
goto
if
implements
include_once()
include()
instanceof
interface
isset()
list()
namespace
new
old_function ''(PHP 4)''
or
print()
private
protected
public
require_once()
require()
return()
split() ''(PHP < 5.3)''
static
switch
throw
try
unset()
use
var
while
xor
PHP7 news
editSeveral composed operators can reduce the usual syntax:
??
: null coalescing operator. Equivalent to a ternary operator with anis_null()
.<=>
: spaceship operator. Equivalent to aswitch
with three cases: inferior, equal and superior.intdiv()
: integer division. Equivalent to/
+intval()
.
Moreover, we can now use:
- several classes in the same
use
declaration. define()
to set an array of constants.
Extensions
editList of the 48 native PHP 5.5.0 libraries with EasyPHP:
Core PDO Phar Reflection SPL SimpleXML apache2handler bcmath bz2 calendar ctype curl date dom ereg filter ftp gd hash iconv json libxml mbstring mcrypt mhash mysql mysqli mysqlnd odbc openssl pcre pdo_mysql pdo_sqlite pdo_sqlsrv session sockets sqlite3 sqlsrv standard tokenizer wddx xdebug xml xmlreader xmlwriter xsl zip zlib