从MySQL获得表行PHP数组

Question

$sql = "SELECT active FROM table_name"; 
$result = $conn->query($sql); 

DB：

|active| 
1 
1 
0 
1 

我有台这样并需要获得行到一个数组。 是否有可能获得简单数组这样？：

$array = (1,1,0,1); 

感谢

Answer 1

$sql = "SELECT active FROM table_name"; 

$result = $conn->query($sql); 

while($row = $result->fetch_assoc()) { 
     $arr[]= $row['active']; 
    } 

print_r($arr); 

Answer 2

$sql = "SELECT active FROM table_name"; 
$result = $conn->query($sql); 

$arr=array(); 

foreach($result as $res) 
{ 
    array_push($arr,$res->active); 
} 

var_dump($arr);