You can use the crontab to simulate this.

crontab.txt:

if ( activeClients() ) {
    $bot_minplayers = 4;
}
else {
    $bot_minplayers = 0;
    exec("kick allbots");
}

Note: The crontab gets executed once per minute.

command bot_minplayers works with one minute dalay to add next bots i mean

sorry for my naive reply here but does it not function at all when the crontab runs? - is that the issue

you're limited by the intervals at which the crontab can run, but when it does run every minute, its not adding bots or its not running that check every 10 seconds.

it looks as if you're trying to find a workaround for seconds rather than minutes- if what cml suggested was an option, then you could do this by specifying the crontab interval rather than utilising crontab to set the interval at which to run the check

i see crontab can be used to run things every few miuntes, but i dont see an option for seconds or at least i cannot decipher this from the documentation:
# Format: Minute Hour Day Month DayOfWeek Expression
#
# values can be
# - an asterisk: *
# - a list: 1,2,3,4
# - a range: 1-4
# - a step: */2
#
# and all sorts of combinations, which internally will be reduced
# from 0,1,2-4,5,6,7/3
# to 0,1,2,3,4,5,6,7/3
# and finally 0,3,6
#
# Month and DayOfWeek can also be abbreviations of their name
# e.g. Jan, Feb, Mar ... or Mon, Tue, Wed ...

and also:
// multi-line comments are not available to prevent unexpected
// behavior with asterisk steps e.g. */2

so if you're setting the script to run on a time interval, whether or not seconds is an option, even if u tried with minutes, surely it would need to be a single line?
and i would have thought the timing would be set at the beggining rather than after the check for active clients

*/10 * * * * * if ( activeClients() ) { $bot_minplayers = 4;} else { $bot_minplayers = 0; exec("kick allbots") ;}
this would need to function from a single line would it not?

congratulations , this what i say about minute interval , i know it

for others

when bot_minplayers command are executed , a one minute delay must wait to add first one bot

if command are executed every less time for example in 10 seconds interval

every new started command bot_minplayers restart delay 1 minute must wait to 0 seconds

start from begin and bot not come to game

my result how to do bot_minplayers to be executable in sooner intervals and realy add bots

is touch code of bot_minplayers command what is C code in quake 3 arena inside

copy that C function extract from source codes vivat radiant and sources

then make different one with choosable delay

this will be add to game as dll or so library similar to programming other things

delay 1 minute is old protect against spam with add bot manipulators