//注意在头部引入DB
use DB;
$sql ="INSERT INTO tables(name,c_id) VALUES ('php', 1)
ON DUPLICATE KEY UPDATE name=VALUES(name),c_id=VALUES(c_id);";
$tt = DB::connection()->getPdo()->exec($sql);
print_r($tt);
//注意在头部引入DB
use DB;
$sql ="INSERT INTO tables(name,c_id) VALUES ('php', 1)
ON DUPLICATE KEY UPDATE name=VALUES(name),c_id=VALUES(c_id);";
$tt = DB::connection()->getPdo()->exec($sql);
print_r($tt);