Encapsed strings
-----
<?php

"$A";
"$A->B";
"$A[B]";
"$A[0]";
"$A[1234]";
"$A[9223372036854775808]";
"$A[000]";
"$A[0x0]";
"$A[0b0]";
"$A[$B]";
"{$A}";
"{$A['B']}";
"${A}";
"${A['B']}";
"${$A}";
"\{$A}";
"\{ $A }";
"\\{$A}";
"\\{ $A }";
"{$$A}[B]";
"$$A[B]";
"A $B C";
b"$A";
B"$A";
-----
array(
    0: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: A
                )
            )
        )
    )
    1: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_PropertyFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    name: Identifier(
                        name: B
                    )
                )
            )
        )
    )
    2: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: B
                    )
                )
            )
        )
    )
    3: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_Int(
                        value: 0
                    )
                )
            )
        )
    )
    4: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_Int(
                        value: 1234
                    )
                )
            )
        )
    )
    5: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: 9223372036854775808
                    )
                )
            )
        )
    )
    6: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: 000
                    )
                )
            )
        )
    )
    7: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: 0x0
                    )
                )
            )
        )
    )
    8: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: 0b0
                    )
                )
            )
        )
    )
    9: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Expr_Variable(
                        name: B
                    )
                )
            )
        )
    )
    10: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: A
                )
            )
        )
    )
    11: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: B
                    )
                )
            )
        )
    )
    12: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: A
                )
            )
        )
    )
    13: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: B
                    )
                )
            )
        )
    )
    14: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: Expr_Variable(
                        name: A
                    )
                )
            )
        )
    )
    15: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: \{
                )
                1: Expr_Variable(
                    name: A
                )
                2: InterpolatedStringPart(
                    value: }
                )
            )
        )
    )
    16: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: \{
                )
                1: Expr_Variable(
                    name: A
                )
                2: InterpolatedStringPart(
                    value:  }
                )
            )
        )
    )
    17: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: \
                )
                1: Expr_Variable(
                    name: A
                )
            )
        )
    )
    18: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: \{
                )
                1: Expr_Variable(
                    name: A
                )
                2: InterpolatedStringPart(
                    value:  }
                )
            )
        )
    )
    19: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: Expr_Variable(
                        name: A
                    )
                )
                1: InterpolatedStringPart(
                    value: [B]
                )
            )
        )
    )
    20: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: $
                )
                1: Expr_ArrayDimFetch(
                    var: Expr_Variable(
                        name: A
                    )
                    dim: Scalar_String(
                        value: B
                    )
                )
            )
        )
    )
    21: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: A
                )
                1: Expr_Variable(
                    name: B
                )
                2: InterpolatedStringPart(
                    value:  C
                )
            )
        )
    )
    22: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: A
                )
            )
        )
    )
    23: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: Expr_Variable(
                    name: A
                )
            )
        )
    )
)