PHP-Parser/UPGRADE-5.0.md

Upgrading from PHP-Parser 4.x to 5.0

PHP version requirements

PHP-Parser now requires PHP 7.1 or newer to run. It is however still possible to parse code for older versions, while running on a newer version.

Changes to the default pretty printer

A number of changes to the standard pretty printer have been made, to make it match contemporary coding style conventions (and in particular PSR-12). Options to restore the previous behavior are not provided, but it is possible to override the formatting methods (such as pStmt_ClassMethod) with your preferred formatting.

Return types are now formatted without a space before the ::

# Before
function test() : Type
{
}

# After
function test(): Type
{
}

abstract and final are now printed before visibility modifiers:

# Before
public abstract function test();

# After
abstract public function test();

A space is now printed between use and the following ( for closures:

# Before
function () use($var) {
};

# After
function () use ($var) {
};