[8.76.0] Redis flush array_unique error

[it-can]

• Laravel Version: 8.76.0
• PHP Version: 8.0.13
• Database Driver & Version: MariaDB & Redis

Description:

Flushing redis generates this error:

array_unique(): Argument #1 ($array) must be of type array, null given

I think it has to do with #39939

Reverting back to 8.75.0 everything works again.

Steps To Reproduce:

Cache::tags('menu')->flush();

array_unique(): Argument #1 ($array) must be of type array, null given

[dkuzmenchuk]

Hi @it-can,

Could you please tell what redis client do you use, predis or phpredis?

[it-can]

phpredis

[DarkPain0]

We have the same issue after the last upgrade with phpredis

[taylorotwell]

@dkuzmenchuk do you understand the problem and are you able to fix it? Otherwise, we need to revert this ASAP.

[dkuzmenchuk]

@taylorotwell yes, I found a reason of this issue. Making new PR with a fix right now

[taylorotwell]

@dkuzmenchuk do you have a time frame in mind for that?

[dkuzmenchuk]

@taylorotwell I think there are more differences between Redis clients than just the return value. So I think we should revert my PR. In this case I'll have time to make more tests to be sure everything work good with my fixes in new PR

[taylorotwell]

Reverted.

[dkuzmenchuk]

I published new PR #40039 which contains changes from PR #39939, but takes into consideration that Laravel supports 2 Redis clients