php-grammarAn open source EBNF grammar for PHP.

Grammar explorer

PHP 8.5 Production

arrow-function-header

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arrow-function-header 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""fn""&""("Explore production: parameter-listparameter-list")"Explore production: return-typereturn-type"=>"
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
arrow-function-header =
    [ attribute-groups ] , [ "static" ] , "fn" , [ "&" ] ,
    "(" , parameter-list , ")" , return-type , "=>" ;

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attribute-groups parameter-list return-type
Referenced by 5
arrow-functionarrow-prefix-contextclosed-yield-arrow-expressionclosed-yield-arrow-prefix-contextyield-key

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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.

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