Question

I have the following code:

while ($var1 == $var2)
{
    $sql = “SELECT disabled FROM MYTABLE WHERE VAR2=’$var2’”;
    $r = mysql_query($sql);
    while ($row = mysql_fetch_assoc($r)) 
    {
        // do something
    }
}

My problem is that $sql retrieves ten rows: 4 of them have data, the rest are empty.

As the first row is empty the second while is never entered.

But I need it to be entered, what do I have to do?

In the example code I’m using MySQL but I can use TSQL.

Thanks a lot

Answer 1

You can check the total rows first.

while (mysql_num_rows($r) > 0 && $row = mysql_fetch_assoc($r)) 
{
    // do something
}

Sorry that will not work, try the below.

if(mysql_num_rows($r) > 0 ) {
    while ($row = mysql_fetch_assoc($r)) 
    {
       // do something
    }
}