It works now.

A fix has been deployed, now 7.4 also shows the log information as it should.

The recent kata doesn't have php 7.0 to print inputs . We cant print on the php 7.4

comp([2,3],[4,9],1).
comp([2,3],[4,9],0).
Both can't be true.

comp([2,3],[4,9])
comp([2,3],[4,9])

These are not the original arrays that are given in the tests you mention.
I am sorry but your code is wrong somewhere. These tests are the same in all languages and you can see at the top of the page how many people passed the kata.
BTW I see that you are new at CW but don't post issues too fast:-) Cheers!

Prolog comp testcase has an error - probably from copy paste.
I didn't know what was wrong, so I leaked the comp testcases and found that
there are identical testcases, but with different expected results.

A1:
[11,19,121,144,161]=1
[11,19,121,144,161,191,195,1440]=1
[0]=1
[2,3]=1
[2,3]=0

A2:
[121,361,14641,20736,25921]=1
[121,361,14641,20736,25921,36481,38025,2073600]=1
[0]=1
[4,9]=1
[4,9]=0

comp([2,3],[4,9],1).
comp([2,3],[4,9],0).
Both can't be true.

Oh, Thank you Chrono79

It is indeed not showing the debug information in 7.4, change the version to 7.0 and it'll show. It's not a kata specific problem, and I already reported it as an issue here

you're not helping. I mean i can't even print a simple string.
I did other kata, and i can print (in php) but not in this kata

edit: I found a difference in output :

-this one show "details" and doesn't show what i print,
-others show "log" and can show what i print

Google "php print array".

Hello

I m using PHP, and i didn't suceed to print the input .
I tried var_dump, print_r, echo ... own function to show with console.log().

How i can show the inputs?

ps: I tried JavaScript, and it works with console.log()