PHP 根据所选行将 MySQLi 数据库值分配给 PHP 变量

Question

我想根据数据库中所选学生的相应“contact_number”分配“$numbers”的值。 我试过了：

$numbers = "SELECT contact_number from students where idnumber='$idnumber'";

但它只选择所选学生的 idnumber。

我的桌子图片：学生桌

编码：

<?php 
$username = "******@****";
$hash = "*******";

// Config variables. Consult http://api.txtlocal.com/docs for more info.
$test = "0";

// Data for text message. This is the text message data.
$sender = "CCA Update"; // This is who the message appears to be from.
$numbers = "SELECT contact_number from students where idnumber='$idnumber'";
// A single number or a comma-seperated list of numbers
$message = "Your grade has been updated!";
// 612 chars or less
// A single number or a comma-seperated list of numbers
$message = urlencode($message);
$data = "username=".$username."&hash=".$hash."&message="
.$message."&sender=".$sender."&numbers=".$numbers."&test=".$test;
$ch = curl_init('https://api.txtlocal.com/send/?');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch); // This is the result from the API
curl_close($ch);
print_r($result);  
?>

如果需要，我可以提供更多信息。

Answer 1

解决了！ 这是代码：

$numbers = $row['contact_number'];