[GoldNux]

edit: Solved: Christ.. I put %i instead of %f SORRY!

Below is how I see it used when looking at examples, but for me it just prints:
1107723518
1107948770

PHP Code:

public printC4Timer()
{
    new c4 = fm_find_ent_by_model(-1, "grenade", "models/w_c4.mdl")
    new float:explode_time = cs_get_c4_explode_time(c4) - get_gametime( );
    client_cmd(0, "say %i", explode_time)
}