for loop help – please !!

Hello,

I have a form ( named c_sal_ord_fm.php ) with multiple line input generated like this:

for($i=0;$i<15;$i++){

echo “
<tr>
<td><input type=’TEXT’ name=’so_dat$i’ value = ‘$so_dat’
size = ’10’ maxlength=’10’/></td>

<td><input type=’TEXT’ name=’so_num$i’ value = ‘$so_num’
size = ‘6’ maxlength=’10’/></td>
} // end of loop

I want to validate the input in the calling script ( named c_sal_ord.php )
with this:

for($i = 0; $i < 15; $i++){

$so_dat = strip_tags(trim($_POST[“so_dat$i”])); // should be $so_dat$i ???
$so_num = strip_tags(trim($_POST[“so_num$i”]));
$acc_nam = strip_tags(trim($_POST[“acc_nam$i”]));
$prod = strip_tags(trim($_POST[“prod$i”]));
$price = strip_tags(trim($_POST[“price$i”]));
$qty = strip_tags(trim($_POST[“qty$i”]));

/*
* Check the date field
*/

if(!ereg(“^{^[0-9]{2}–[0-9]{2}–[0-9]{4}$”,$so_dat)){} // should be $so_dat$i
$mess = “yes”;
$message1 = “All dates must be formated dd-mm-yyyy”;
$message2 = ” “;
require_once (“c_sal_ord_fm.php”);
exit();
} // endif

[ plus others – then update the database if everything is ok ]

} // end of loop

As you can see the validation calls the form again. The problem is that I was
trying not to loose the data that was keyed in by setting the value
in the form as ‘$so_dat’ and updating it from the form when submitted.

Trouble is this only works for one line. I really need to change the variable
name with the $i each time. Of course $so_dat$i doesn’t work. I guess
two $ signs is not allowed in one variable.

Does anyone know how I do this ?

Thanks
David.

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