这里有非常相似的问题,但是经过大量搜索和尝试不同的事情后,我仍然被卡住了。
用于mysqli_fetch_assoc()
填充数组时,每行添加两次。
$query = "SELECT column FROM table WHERE year = 2012";
if ($result = mysqli_query($connect, $query)) {
while ($row = mysqli_fetch_assoc($result)) {
$data[] = $row["column"];
}
echo implode(',', $data);
mysqli_free_result($result);
}
这将返回以下内容:
1,2,3,4,5,6,7,8,9,10,1,2,3,4,5,6,7,8,9,10
我期待着1,2,3,4,5,6,7,8,9,10
我添加了一些额外的行来进行一些调试......
print_r($data)
产量
Array (
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
[6] => 7
[7] => 8
[8] => 9
[9] => 10
[10] => 1
[11] => 2
[12] => 3
[13] => 4
[14] => 5
[15] => 6
[16] => 7
[17] => 8
[18] => 9
[19] => 10 )
print_r($result);
产量
mysqli_result Object
(
[current_field] => 0
[field_count] => 1
[lengths] =>
[num_rows] => 10
[type] => 0
)
如果[num_rows] => 10
,并且我正在使用mysqli_fetch_assoc()
而不是mysqli_fetch_array()
,为什么要将值添加到数组中两次?