for($x=0;$x<10000;$x++){ $query="1"; for($i=0;$i<50;$i++){ $rand=int(rand(5)); $rand_num=int(rand(9))+1; if($rand==0){ $query.="+$rand_num"; }elsif($rand==1){ $query.="-$rand_num"; }elsif($rand==2){ $query.="*$rand_num"; }elsif($rand==3){ $query.="%$rand_num"; }else{ $query.="/$rand_num"; } } print "SELECT $query\n"; }