php-grammarAn open source EBNF grammar for PHP.

Grammar explorer

PHP 8.5 Production

variable-variable

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variable-variable 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."$"Explore production: variable-likevariable-like"$""{"Explore production: expressionexpression"}"
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
variable-variable =
      "$" , variable-like
    | "$" , "{" , expression , "}" ;

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variable-like expression
Referenced by 1
variable-like

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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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