题目内容

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]

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mysqli_fetch_all()函数描述正确的是( )

A. 默认返回索引数组
B. 默认返回关联数据
C. 默认返回索引和关联数据
D. 默认返回对象数组

以下代码实现的功能是( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select id,name from user');$data = mysqli_fetch_all($result);foreach ($data as $v){echo $v[1].'
';}

A. 输出所有用户的name
B. 输出所有用户的id
C. 输出所有第一个用户的name
D. 输出最后一个用户的name

以下程序代码实现的功能是( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select id,name from user');$data = mysqli_fetch_all($result,MYSQLI_ASSOC);foreach ($data as $v){if($v['id'] == 5){echo $v['name'];}}

A. 输出所用用户的name
B. 输出第一位用户的name
C. 输出id=5的用户的name
D. 输出id不为5的用户的name

对以下程序运行结果描述正确的是( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select id,name from user order by id');$data = mysqli_fetch_all($result,MYSQLI_ASSOC);foreach ($data as $k=>$v){if($k == 2){break;}echo $v['name'].'
';}

A. 输出前面2位用户的name
B. 输出后面2位用户的name
C. 输出所有用户的name
D. 输出id=2的name