TysonAndre
The string representation is used as the array key, not the number it evaluates to. (support 0b1_0, -0x1_f, -0_1_7, etc) ``` <?php $a1 = array('-1_2_3' => 'value for string'); $a2 = array(); $a2["$a1[-1_2_3]"] = "second"; var_export($a2); ``` Highlight invalid octal literals such as 09 as syntax errors in phpInterpSimpleBrackets in offsets of string encapsulation (should already be fixed in regular literals) Discovered while working on #4