如何使用mysqli输出返回的行数?我下面的代码显示了0,但while循环(while $s->fetch() echo $uid;)显示了2个结果;$s=$m->prepare("SELECT uid FROM user WHERE token=? AND secret=?");$rt='c';$s
line 358 Warning: mysqli_stmt::close(): Couldn't fetch mysqli_stmt in /Users/olatunjigbadamosi/Sites/ST_Ambulance/FormDB.php on line 363 Warning: mysqli_stmt::execute(): Couldn't fetch mysqli_stmt in /Usersline 374 Warning:
mysqli_stmt_fetch($stmt);误差Warning: mysqli_stmt_execute() expects parameter 1 to be mysqli_stmt, booleangiven on line 51
Warning: mysqli_stmt_bind_result()