exolent already fixed create_test_spawn() (although it could be Float:{953, 412, 46} and Float:{0, 180, 0}, for {953.0, 412.0, 46.0} and {0.0, 180.0, 0.0} you dont need to add a float: in front).
also, look at this to fix your usage of EngFunc_FindEntityByString:
PHP Code:
new ent = -1;
while( ( ent = engfunc(EngFunc_FindEntityByString, ent, "classname", "info_player_deathmatch" ) ) != 0 )
{
// do sth
}
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