php-grammarAn open source EBNF grammar for PHP.

Grammar explorer

PHP 8.5 Production

closure-expression

Read left to right. Select any rule to explore it.

closure-expression railroad diagramRead left to right. Branches are alternatives, bypasses are optional, and loops repeat. Select a production to explore it. The EBNF and linked references follow below.Explore production: attribute-groupsattribute-groups"static""function""&""("Explore production: parameter-listparameter-list")"Explore production: lexical-variable-listlexical-variable-listExplore production: return-typereturn-typeExplore production: compound-statementcompound-statement
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
closure-expression =
    [ attribute-groups ] , [ "static" ] , "function" , [ "&" ] ,
    "(" , parameter-list , ")" , [ lexical-variable-list ] , return-type ,
    compound-statement ;

Explore next

attribute-groups parameter-list lexical-variable-list return-type compound-statement
Referenced by 1
postfix-expression

Take it with you

The grammar, in plain text.

For reading, building tools, and exploring PHP.
Free to use under the MIT license.

php.ebnfPHP 8.5 · Canonical EBNF grammar php.mdPHP 8.5 · Grammar & source contract

A shared understanding of PHP.

php-grammar is an open source project documenting PHP syntax in a consistent, tool-independent format. The EBNF describes syntax; the accompanying specification defines lexical rules and contextual constraints.

Explore the project and contribute