php-grammarAn open source EBNF grammar for PHP.

Grammar explorer

PHP 8.5 Production

instanceof-expression

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

instanceof-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: unary-expressionunary-expression"instanceof"Explore production: class-name-referenceclass-name-reference"**"Explore production: unary-expressionunary-expression
Production LiteralBranch: choiceBypass: optionalLoop: repeat
EBNF source
instanceof-expression =
    unary-expression , { "instanceof" , class-name-reference , [ "**" , unary-expression ] } ;

Explore next

unary-expression class-name-reference
Referenced by 2
boolean-not-expressioninstanceof-prefix-context

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