[xZdadyZx]

SA-MP wiki, use it next time.
https://sampwiki.blast.hk/wiki/GangZoneCreate
Use GangZoneCreate, and dont forget about GangZoneDestroy.

PHP код:

new gangzone;
gangzone = GangZoneCreate(1248.011, 2072.804, 1439.348, 2204.319);