PHP-获取数组中的项数

好的，我得到了一个while循环，在其中我循环了不同的用户：

$before = $data['autorenew_before'];
$refs=$dbh->prepare("SELECT * FROM users WHERE user_by=:userby AND expire <= unix_timestamp(CURRENT_TIMESTAMP + INTERVAL :before day)");
    #$refs->bindParam(":userby",$data['username']);
    $refs->bindParam(":userby",$userdata['username']);
    $refs->bindParam(":before",$before);
    $refs->execute();

这是支付功能：

function _paying($ceny, $dni, $username, $referrals_array){
  //$ceny = 0.20

  //Count referrals_array doesn't return anything. 
  $koszyk = $ceny * count($referrals_array);

   return $koszyk;


}

上面的函数不起作用，因为count$referrals\u数组不起作用

编辑-1：

打印\u r$爆炸；给我：

Array
(
    [0] => 40231
    [1] => 
)
Array
(
    [0] => 40232
    [1] => 
)
Array
(
    [0] => 40233
    [1] => 
)
Array
(
    [0] => 40234
    [1] => 
)
Array
(
    [0] => 40235
    [1] => 
)
Array
(
    [0] => 55847
    [1] => 
)
Array
(
    [0] => 55848
    [1] => 
)
Array
(
    [0] => 90322
    [1] => 
)
Array
(
    [0] => 90323
    [1] => 
)
Array
(
    [0] => 90324
    [1] => 
)
Array
(
    [0] => 90325
    [1] => 
)
Array
(
    [0] => 90326
    [1] => 
)

---

我做错了什么？

您检查了$explode的内容了吗？

---

尝试打印\u r$爆炸；在打电话确认是否有数据之前。

请查看我的最新问题。我已经粘贴了print_r$explode的内容；

Array
(
    [0] => 40231
    [1] => 
)
Array
(
    [0] => 40232
    [1] => 
)
Array
(
    [0] => 40233
    [1] => 
)
Array
(
    [0] => 40234
    [1] => 
)
Array
(
    [0] => 40235
    [1] => 
)
Array
(
    [0] => 55847
    [1] => 
)
Array
(
    [0] => 55848
    [1] => 
)
Array
(
    [0] => 90322
    [1] => 
)
Array
(
    [0] => 90323
    [1] => 
)
Array
(
    [0] => 90324
    [1] => 
)
Array
(
    [0] => 90325
    [1] => 
)
Array
(
    [0] => 90326
    [1] => 
)