Intelephense is a high performance PHP language server packed full of essential features for productive PHP development.

Fast camel/underscore case code completion (IntelliSense). Offering detailed suggestions for document, workspace and built-in symbols and keywords. Automatic addition of use declarations.
Detailed signature (parameter) help for document, workspace and built-in constructors, methods, and functions.
Rapid workspace wide go to definition support.
Workspace wide find all references.
Fast camel/underscore case workspace symbol search.
Full document symbol search that also powers breadcrumbs and outline UI.
Multiple diagnostics for open files via an error tolerant parser and powerful static analysis engine.
Lossless PSR-12 compatible document/range formatting. Formats combined HTML/PHP/JS/CSS files too.
HTML request forwarding to HTML language servers for complete HTML/JS/CSS/PHP code intelligence.
Detailed hover with links to official PHP documentation.
Smart highlight of references and keywords.
Reads PHPStorm metadata for improved type analysis and suggestions.
Easy rename of symbols. When appropriate, files/folders are automatically renamed too. PREMIUM
Accurate code folding of definitions, blocks, use declarations, heredoc, comments, and custom regions. PREMIUM
Quickly find all implementations of interfaces and abstract classes and associated methods. PREMIUM
Fast go to type definition of typed variables and parameters. PREMIUM
Fast go to declaration for methods implementing an interface or abstract method declaration. PREMIUM
Configurable auto phpdoc creation that infers return types and identifies thrown exceptions. PREMIUM

Only for V.I.P