PHP-如何从MySQL的数组到逗号分开

Question

PHP我得到这个：

array(2) { 
  [0]=> array(1) 
   { 
     ["username"]=> string(7) "9994344" 
   } 
  [1]=> array(1)
   {
     ["username"]=> string(7) "9994345" 
   } 
 }

如何将其放入逗号分隔列表

例如 SELECT *from table1 WHERE column IN ("9994344","9994345")

Answer 1

$in_list = implode(',', array_map(function($x) {
    return '"' . $x['username'] . '"';
}, $array));

$sql = "SELECT * FROM table1 WHERE column IN ($in_list)";

Answer 2

$ids=array(); 
while($row = mysql_fetch_assoc($result))
{
  $ids[]=$row["UserID"]; 
} 
echo implode(", ", $ids);

Answer 3

尝试这个

$arr_username = array();
foreach($arr as $arr_value)
{
    $arr_username[] = '"'.$arr_value['username'].'"';
}

$in = implode(",", $arr_username);

$sql = "SELECT * FROM table1 WHERE column IN ($in)";