Sindbad~EG File Manager

Unicode escape sequence
-----
<?php

"\u{0}";
"\u{114}$foo";
`\u{1F602}$bar`;
-----
array(
    0: Stmt_Expression(
        expr: Scalar_String(
            value: @@{"\0"}@@
        )
    )
    1: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: Ĕ
                )
                1: Expr_Variable(
                    name: foo
                )
            )
        )
    )
    2: Stmt_Expression(
        expr: Expr_ShellExec(
            parts: array(
                0: InterpolatedStringPart(
                    value: @@{"\xF0\x9F\x98\x82"}@@
                )
                1: Expr_Variable(
                    name: bar
                )
            )
        )
    )
)
-----
<?php

"\u{0}";
"\u{114}$foo";
`\u{1F602}$bar`;
-----
!!version=5.6
array(
    0: Stmt_Expression(
        expr: Scalar_String(
            value: \u{0}
        )
    )
    1: Stmt_Expression(
        expr: Scalar_InterpolatedString(
            parts: array(
                0: InterpolatedStringPart(
                    value: \u{114}
                )
                1: Expr_Variable(
                    name: foo
                )
            )
        )
    )
    2: Stmt_Expression(
        expr: Expr_ShellExec(
            parts: array(
                0: InterpolatedStringPart(
                    value: \u{1F602}
                )
                1: Expr_Variable(
                    name: bar
                )
            )
        )
    )
)
-----
<?php
"\u{FFFFFFFFFFFFFFFF}";
-----
Invalid UTF-8 codepoint escape sequence: Codepoint too large on line 2