PHP 7 + PHP json extension, need to json extension before loading JWT extension. OpenSSL (Version >= 1.1.0j) Might work with older version as well, but I did not check that.

This extension allows you to easily unserialize PHP serialized strings directly within VS Code. Convert PHP serialized data to readable JSON with a single command and choose how to view the results.

PHP 側で整形した連想配列をjson_encodeを利用してフロント側へ JSON を出力する。 方法 PHP の連想配列を JSON にしたい場合はjson ...