[Dayrion]

Alright.
There is 2 types of timer in SA:MP.
- SetTimer(funcname[], interval, repeating)
- SetTimerEx(funcname[], interval, repeating, const format[], {Float,_}:...)
The difference between those timers is one can't take parameters (the first).

How does this works?
Let's respawn a player in 10 seconds after do /respawn.
Copy and paste in your gamemode to see the comments.

PHP Code:

// Code ...
SetTimerEx("RespawnPlayer", 10000, false, "i", playerid);
//             ^ The name of the function which timer wille execute after x seconds.
//                              ^ Time before the timer execut the function
//                                    ^ If we want to repeat this (execute a function after x seconds, usefull for anti-cheat checking)
//                                           ^ Our function called RespawnPlayer have 1 parameter : playerid and playerid is an integer so "i"
//                                                    ^ To complete the "i"


public RespawnPlayer(playerid)
{
    SpawnPlayer(playerid);
    return 1;
}