single-quoted-code-unit
This is an external lexical primitive. Its byte and scanner-state constraints are defined in the Markdown specification, rather than as an EBNF production.
Read the lexical contract ↗Grammar explorer
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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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