php-parser/test/code/parser/stmt/function/byRef.test

Return and pass by ref
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<?php

function a(&$b) {}
function &a($b) {}
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array(
    0: Stmt_Function(
        byRef: false
        name: a
        params: array(
            0: Param(
                type: null
                byRef: true
                variadic: false
                var: Expr_Variable(
                    name: b
                )
                default: null
            )
        )
        returnType: null
        stmts: array(
        )
    )
    1: Stmt_Function(
        byRef: true
        name: a
        params: array(
            0: Param(
                type: null
                byRef: false
                variadic: false
                var: Expr_Variable(
                    name: b
                )
                default: null
            )
        )
        returnType: null
        stmts: array(
        )
    )
)