phpquery
PHP extension manager for Debian-based OSes.
TLDR
List available PHP versions
$ sudo phpquery -V
List available SAPIs for PHP 7.3
$ sudo phpquery -v [7.3] -S
List enabled extensions for PHP 7.3 with the cli SAPI
$ sudo phpquery -v [7.3] -s [cli] -M
Check if the JSON extension is enabled for PHP 7.3 with the apache2 SAPI
$ sudo phpquery -v [7.3] -s [apache2] -m [json]