Deprecated: Using ${expr} (variable variables) in strings is deprecated, use {${expr}} instead in php shell code on line 1 Fatal error: Array and string offset access syntax with curly braces is no ...

Subject says all, see pull request #62 for fix. Tested on PHP 7.4.12 but should work all the way back to before PHP 5.1 (2008) when the deprecation warning was initially intended.