Recreating variable names and reading values

[phpfan]

I have a script that creates some variables (var1, var2, var3 ...) on the fly and sends them to a second script through a form. In the second script I need to recreate these variable names and update a database, as follows:

$check = 1;
while ($row = mysql_fetch_array($sql_result)) {
$record1 = $row["record1"];
$record2 = $row["record2"];

$a = "\$var{$check}";  // <= here is the problem

$sql = "UPDATE table SET record1 = '$a' WHERE record2 = '$xyz'";
$sql_result = mysql_query ($sql, $connection) or die ("Failed update");

$check = $check+1;
	}

I am trying to recreate the variable names ($var1, $var2, $var3 ...) under $a in the second script, and then update the database. The variable name gets created, but the values from the first script are not picked up. I am doing something wrong. Any help will be appreciated. Thank you.

[Weedpacket]

$a = ${"var".$check}; but I have to say that the code doesn't look very robust at all.

$check=1;
while($row=mysql_fetch_array($sql_result))
{
    $field = 'var'.$check;
    if(isset($_POST[$field]))
    {
        $sql = "Update table set record1='".$_POST[$field]."' where record2='$xyz'";
        mysql_query($sql) or die("Failed update");
    }
    $check++;
}

And of course you should check that $POST['var1'], $POST['var2'] and so on have values that can be safely inserted in the query.

[phpfan]

It works. Thank you.