re: passing multiple textbox variables

[Anon]

I have been attempting to pass a series of dynamically generated html textbox variables into an array. This is for a shopping cart with the textbox beside every product so the person can enter a quantity of something they desire to purchase. The code below works, but I can only get the last value to go into the array. The rest won't go.

for ($i = 0; $i < mysql_num_rows($retid); $i++) {
QTY: <INPUT TYPE=text name="<? echo "qty".$i ?>" value="<? echo $quantity[$i] ?>" maxlength="3" size="3">

    $index=0;
    $tmp = "qty".$i ;
    $quantity[] = $$tmp;
    $index++; 

}

I happened across the double $. This appears to act like dereferencing in C.
Without it, it just prints qty0, qty1 etc.

If in the same script I have this code, it will print the contents of the first two generated textboxs.

for ($i=0; $i <= $numrows+1;$i++) {
if (isset($inCart[$i])){
echo("<BR>" . $inCart[$i] . "<BR>");
echo ("1--->" . $quantity[0]);
echo ("2--->" . $quantity[1]);

}
}

However, if I put

echo ("all--->" . $quantity[$i]);

in place of the above singular echo, it only prints the last textboxs contents. Also, if I try to access these variables in another page, it can't find them. How do I pass an array in this way and get scalar contents in?
Is there a better way?(i'm sure!)

I hope this is legible enough to answer.

Thanks in advance.

[Anon]

If you look at the name of the text box "qty[]" this gives you an array from 0 up.

for ($i = 0; $i < mysql_num_rows($retid); $i++) {
QTY: <INPUT TYPE=text name="qty[]" value="<? echo $quantity[$i] ?>" maxlength="3" size="3">

...
}

When the form is posted you gat the array with:

for ($i = 0; $i < count($qty); $i++ ) {
$value=$qty[$i];

...
}

Hope this helps!