php-grammarAn open source EBNF grammar for PHP.

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PHP 8.5 Production

power-prefix-context

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power-prefix-context 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: clone-prefix-contextclone-prefix-contextExplore production: clone-expressionclone-expression"**"Explore production: clone-expressionclone-expression"**"Explore production: clone-prefix-contextclone-prefix-context
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
power-prefix-context =
    clone-prefix-context | clone-expression , "**" , { clone-expression , "**" } , [ clone-prefix-context ] ;

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clone-prefix-context clone-expression
Referenced by 2
unary-expressionunary-prefix-context

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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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