php-grammarAn open source EBNF grammar for PHP.

Grammar explorer

PHP 8.5 Production

print-expression

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

print-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: yield-expressionyield-expressionExplore production: yield-prefix-contextyield-prefix-context"print"Explore production: print-expressionprint-expression
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
print-expression =
    yield-expression
    | [ yield-prefix-context ] , "print" , print-expression ;

Explore next

yield-expression yield-prefix-context print-expression
Referenced by 2
logical-and-expressionprint-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