Assuming ADOdb 5.20.4 of Flyspray 1.0-RC1 zipfile with included 3rd libraries:

Mmh, constant ADODB_ASSOC_CASE_NATIVE is defined in vendor/adodb/adodb-php/adodb.inc.php line 138:

define('ADODB_ASSOC_CASE_NATIVE', 2);

The only cases this line is not run if the condiftion in line 91

if (!$ADODB_EXTENSION || ADODB_EXTENSION < 4.0) {

failed.

So maybe $ADODB_EXTENSION is set by all-inkl.com hosting environment and so that part of adodb.inc.php is never run? (line 92 - 163 of adodb.inc.php)
And all-inkl.com uses an older ADODB extension by default?

Could you please verify by putting

echo PHP_VERSION.'<pre>'; print_r($GLOBALS);die('</pre>');

at start of setup/index.php or
at start of vendor/adodb/adodb-php/adodb.inc.php
so we can find out if a variable ADODB_EXTENSION is set?

Netherless I would see this as bug of ADOdb under some hosting circumstances, but first lets verify it.

I used the zipfile without 3rd libraries.

https://github.com/Flyspray/flyspray/archive/v1.0-rc1.zip

As far as I can tell composer was installed during the installation without any error-notification. (I do not have shell access to the server).

ADODB_EXTENSION is not set. I pasted the code and searched for pattern, with no result.

Could you please retry with the release for php5.3 with the included 3rd party libs?

http://flyspray.org/packed/flyspray-1.0-rc1_php53.tgz

Hi,

I removed the old installation, cleaned the database and installed the package you linked.

It triggers the same error. I attach the full error message in a file.

   Flyspray_error.txt (30.1 KiB)

I created a testaccount on https://all-inkl.com and tried to install Flyspray there.

They use ADOdb 5.0.4 (released 2008 - 8 year old) for php5.3, php5.4, php5.5, php5.6

But netherless what version of ADOdb they provide by default as enabled extension, Flyspray should use its own uptodate version of ADOdb.

Curiously the warnings show the lines from Flysprays vendor directory. But maybe it is done by PHP after the warning is raised?

Possible solutions:

using a script

<?php print_r(get_defined_constants(true)); ?>

outputs this:

...
 [ADOdb] => Array
        (
            [ADODB_EXTENSION] => 5.04
            [ADODB_FETCH_DEFAULT] => 0
            [ADODB_FETCH_NUM] => 1
            [ADODB_FETCH_ASSOC] => 2
            [ADODB_FETCH_BOTH] => 3
            [ADODB_PHPVER] => 21920
            [TIMESTAMP_FIRST_YEAR] => 100
            [ADODB_PREFETCH_ROWS] => 10
            [ADODB_TABLE_REGEX] => ([]0-9a-z_\`\.\@\[-]*)
            [ADODB_BAD_RS] => 

Bad $rs in %s. Connection or SQL invalid. Try using $connection->debug=true;

        )
...

So we have now evidence that a constant ADODB_EXTENSION is defined before php runs our own code.

Experiment:

As php7 is the only php version on all-inkl.com without included adodb as extension, I set the php version to php7 in all-inkl admin for a subdomain on the test account and installed flyspray using the http://flyspray.org/packed/flyspray-1.0-rc1_php56.tgz

There were some Notice warnings on the first setup screen, but then the webinstall was quite smooth. not tested any further yet.

Flyspray wasn't yet tested on php7 at all yet, but let's start supporting it too..

   fs_all-inkl.com.png (43.1 KiB)

I mailed all-inkl.com and opened issue in ADOdb issue tracker:
https://github.com/ADOdb/ADOdb/issues/269