Php/docs/migration53.new-features
From Get docs
New features
PHP 5.3.0 offers a wide range of new features:
- Support for namespaces has been added.
- Support for Late Static Bindings has been added.
- Support for jump labels (limited goto) has been added.
- Support for native Closures (Lambda/Anonymous functions) has been added.
- There are two new magic methods, __callStatic() and __invoke().
- Nowdoc syntax is now supported, similar to Heredoc syntax, but with single quotes.
- It is now possible to use Heredocs to initialize static variables and class properties/constants.
- Heredocs may now be declared using double quotes, complementing the Nowdoc syntax.
-
Constants can now be
declared outside a class using the
const
keyword. -
The ternary
operator now has a shorthand form:
?:
. - The HTTP stream wrapper now considers all status codes from 200 to 399 to be successful.
-
Dynamic access to static methods is now possible:
<?phpclass C { public static $foo = 123;}$a = "C";echo $a::$foo;?>
The above example will output:
123
-
Exceptions can now be nested:
<?phpclass MyCustomException extends Exception {}try { throw new MyCustomException("Exceptional", 112);} catch (Exception $e) { /* Note the use of the third parameter to pass $e * into the RuntimeException. */ throw new RuntimeException("Rethrowing", 911, $e);}?>
- A garbage collector for circular references has been added, and is enabled by default.
- The mail() function now supports logging of sent email via the mail.log configuration directive. (Note: This only applies to email sent through this function.)