Cannot install 4.7 on PHP 8.x+

[LiquidFractal]

I've had some strange problems with install of IPB 4.7 on my test site.  Absolutely clean install of 4.7, but the installation process craps out in the middle at exactly the same spot (after the core DB tables and apps are installed, and when the "settings" installation begins) when PHP on the site is set to either 8.0.21 or 8.1.8.

After some experimentation, the only way I could get the installation to complete successfully was by bumping PHP back down to 7.4.3.

And just for the record: all the pre-flight server requirements were in the green.

Just letting the Invision folks know!

Edited August 9, 2022 by LiquidFractal

[LiquidFractal]

UPDATE: if this helps, the URL of the install process when it terminated was:

http://mywebsite.com/admin/install/index.php?controller=install&mr=218

I will see what happens with installing under PHP 7.4.3 and then bumping things backup to 8.1.8.

[LiquidFractal]

Argh...sorry for the repeated messages on this thread - I'd edit the previous posts but my time ran out.

ADDENDUM: I'm working with 4.7.1, not 4.7, so just to be clear my problems above were with IPB 4.7.1 (the newest bleeding-edge update).  Perhaps an admin could update the post title at least in the interests of clarity and accuracy?

After downgrading PHP, installation seems to be all right; I've just bumped the site back up to PHP 8.1.8, however, and am poking around the new install - everything seems cool so far...

Edited August 9, 2022 by LiquidFractal

[Daniel F]

Do you see any logged errors in your php error log? 

[LiquidFractal]

20 hours ago, Daniel F said:

Do you see any logged errors in your php error log? 

Where can I check that?  If it's in the normal site error logs, I checked and couldn't see anything which indicated an error for this.

Edited August 10, 2022 by LiquidFractal

[Marc]

This is a question you would need to ask your hosting company, as this is a log on the server itself