Question

嗨朋友为什么mysqli在php中用foreach循环拉一行？它不应该获取所有行的数组吗？

 $link = new mysqli(DB_SERVER, DB_USER,DB_PASSWORD,DB_NAME) or die('error connecting');
 $mob = query("SELECT mobile FROM members_db");
    foreach ($mob as $numbers){
        $mob_numbers = $numbers['mobile'];
        print_r($mob_numbers); exit();
    }

Answer 1

您需要执行以下操作

变化：

foreach ($mob as $numbers)
{
    $mob_numbers = $numbers['mobile'];
    print_r($mob_numbers); exit();
}

要

$results = array();
foreach ($mob as $numbers)
{
    $results[] = $numbers['mobile'];
}
print_r($results); exit();

Answer 2

您必须逐个“获取”记录

$mob = query("SELECT mobile FROM members_db");
while($row = mysqli_fetch_array($link, $mob)){
    print_r($row['mobile'])
}

另外，不确定为什么你在循环中调用exit（）。没有意义。

Answer 3

删除循环中的exit();

为什么mysqli在php中用foreach循环拉一行？

3 个答案: