为什么输出的三个值不能以索引为数字的形式存储在数组中?其给出的错误如下:
注意:未定义偏移:1 in第63行的F:\ xampp \ htdocs \ dashboard \ working_files \ admin_home.php注意:未定义的偏移量:2 inF:\ xampp \ htdocs \ dashboard \ working_files \ admin_home.php第64行
$m_name_detail1_query="SELECT m_name FROM movies";
$run_m_name_detail1_query=mysqli_query($connection,$m_name_detail1_query);
$fetch_m_name_details=mysqli_fetch_array($run_m_name_detail1_query,MYSQLI_NUM);
?> <?php echo $fetch_m_name_details[0] ?>//working
<?php echo $fetch_m_name_details[1] ?>//not working
<?php echo $fetch_m_name_details[2] ?>//not working
mysqli_fetch_array()
返回(以您的情况为例)SQL语句中一行数据的数字索引数组,因为您的SQL是
$m_name_detail1_query="SELECT m_name FROM movies";
每行仅包含1个值-这是您发现有用的$fetch_m_name_details[0]
。
如果要从一系列行中获取值,请使用mysqli_fetch_all()
$fetch_m_name_details=mysqli_fetch_all($run_m_name_detail1_query,MYSQLI_NUM);
然后您会发现$fetch_m_name_details
将包含一个行数组,因此可以使用
echo $fetch_m_name_details[0][0];
echo $fetch_m_name_details[1][0];
echo $fetch_m_name_details[2][0];
如果至少有三行,则>