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:
<?php
class C {
public static $foo = 123;
}
$a = "C";
echo $a::$foo;
?>The above example will output:
123
-
Exceptions can now be nested:
<?php
class 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.)
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-migration53.new-features.html
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References
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