php-parser/UPGRADE-4.0.md

Upgrading from PHP-Parser 3.x to 4.0

PHP version requirements

PHP-Parser now requires PHP 5.6 or newer to run. It is however still possible to parse PHP 5.2-5.5 source code, while running on a newer version.

Changes to the node structure

• Expression statements (expr;) are now represented using a Stmt\Expression node. Previously these statements were directly represented as their constituent expression.
• The name subnode of Param has been renamed to var and now contains a Variable rather than a plain string.
• The name subnode of StaticVar has been renamed to var and now contains a Variable rather than a plain string.
• The var subnode of ClosureUse now contains a Variable rather than a plain string.
• The var subnode of Catch now contains a Variable rather than a plain string.

Removed functionality

• Removed type subnode on Class, ClassMethod and Property nodes. Use flags instead.