Function parse_arena 

pub fn parse_arena<'arena, 'src>(
    arena: &'arena Bump,
    source: &'src str,
) -> ArenaParseResult<'arena, 'src>

Parse PHP source using the latest supported PHP version, returning an arena-allocated ArenaParseResult.

The arena is used for all AST allocations, giving callers control over memory lifetime. The returned result borrows from both the arena and the source string.

Prefer parse unless you are managing the arena yourself for performance reasons (e.g. LSP re-parsing with ParserContext).