在pdo预处理语句中执行多插入或多个不同插入是更好/更快？

i need to insert 1000-30000 lines at a time (made of 19 elements each) into a mysql table from php using pdo prepared statements. I was asking myself if it would be better to do many different inserts or one big multi insert, like:i need to insert 1000-30000 lines at a time (ma