Php/docs/migration54.new-features
From Get docs
New features
PHP 5.4.0 offers a wide range of new features:
- Support for traits has been added.
- Short array syntax has been added, e.g.
$a = [1, 2, 3, 4];
or$a = ['one' => 1, 'two' => 2, 'three' => 3, 'four' => 4];
. - Function array dereferencing has been added, e.g.
foo()[0]
. - Closures now support
$this
. -
<?=
is now always available, regardless of the short_open_tagphp.ini
option. - Class member access on instantiation has been added, e.g.
(new Foo)->bar()
. -
Class::{expr}()
syntax is now supported. - Binary number format has been added, e.g.
0b001001101
. - Improved parse error messages and improved incompatible arguments warnings.
- The session extension can now track the upload progress of files.
- Built-in development web server in CLI mode.
- The GD extension now supports reading and writing of WebP images via imagecreatefromwebp() and imagewebp(), respectively.