题目内容

以下代码运行结果为( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select * from user');$data = mysqli_fetch_array($result);

A. 变量data保存了user表所有数据
B. 变量data保存了user表1条数据
C. 变量data保存了user表的2条数据
D. 变量data保存了user表的3条数据

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下面可以获取多条数据的函数是()

A. mysqli_fetch_array()
B. mysqli_fetch_object()
C. mysqli_fetch_row()
D. mysqli_fetch_all()

以下程序输出结果为( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select * from user');$data = mysqli_num_rows($result);echo $data

A. 输出user表所有记录
B. 输出user表记录总数
C. 输出user表第一条数据
D. 输出user表最后一条数据

以下程序代码实现的功能是( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select * from user');while ($data=mysqli_fetch_array($result)){echo $data['id'].$data['name'].'
';}

A. 输出user表所有用户id和name
B. 输出user表第一位用户id和name
C. 输出user表最后一位用户id和name
D. 输出报错

有以下程序代码,能正确输出id值的是( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select id,name from user');$data = mysqli_fetch_array($result,MYSQLI_NUM);

A. $data['id']
B. $data['name']
C. $data[0]
D. $data[1]