As you asked, I downloaded the branch version-5 (as zip) and decompress it on my test machine
for context:
Server
Ubuntu 20.04 LTS
Apache 2.4.41
PHP 8.3.12
Client
Firefox 131 (Linux)
editor:
1 table with a lot of "enum"
Select 1 enum value, then press "Select"
( ! ) Warning: Array to string conversion in ~/www/adminer-version-5/editor/include/adminer.inc.php on line 356
and after
( ! ) Warning: Cannot modify header information - headers already sent by (output started at ~/www/adminer-version-5/editor/include/adminer.inc.php:356) in ~/www/adminer-version-5/adminer/include/design.inc.php on line 114
(and following lines, 115, 116, 117, 118, 119, 125)
As you asked, I downloaded the branch version-5 (as zip) and decompress it on my test machine for context: Server Ubuntu 20.04 LTS Apache 2.4.41 PHP 8.3.12
Client Firefox 131 (Linux)
editor: 1 table with a lot of "enum" Select 1 enum value, then press "Select" ( ! ) Warning: Array to string conversion in ~/www/adminer-version-5/editor/include/adminer.inc.php on line 356
and after ( ! ) Warning: Cannot modify header information - headers already sent by (output started at ~/www/adminer-version-5/editor/include/adminer.inc.php:356) in ~/www/adminer-version-5/adminer/include/design.inc.php on line 114 (and following lines, 115, 116, 117, 118, 119, 125)