Canman2005 Posted March 29, 2010 Share Posted March 29, 2010 Hi all I have a small shopping cart system using an array to store product id numbers in. It stores it like 2,34,55,55,67,121 Within my cart I have the following, which allows the quantity of a particular product ID to be increased if ($cart) { $newcart = ''; foreach ($_POST as $key=>$value) { if (stristr($key,'qty')) { $id = str_replace('qty','',$key); $items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart); $newcart = ''; foreach ($items as $item) { if ($id != $item) { if ($newcart != '') { $newcart .= ','.$item; } else { $newcart = $item; } } } for ($i=1;$i<=$value;$i++) { if ($newcart != '') { $newcart .= ','.$id; } else { $newcart = $id; } } } } } $cart = $newcart; To use the above, I have a input field next to each item which looks like <input type="text" name="qty23" value="" /> How can I adapt the above code so that if I pass in my URL ?action=update&id=23 then it would reduce the quantity of 23 by 1 so with an array which looked like 10,10,23,23,30 after passing ?action=update&id=23 it would then look like 10,10,23,30 any help would be great, been trying to crack this but with no luck thanks in advance ed Quote Link to comment Share on other sites More sharing options...
nicholasstephan Posted March 29, 2010 Share Posted March 29, 2010 That's the weirdest way to store quantities dude... take a look at the php array functions (http://us.php.net/manual/en/ref.array.php) you've got, you should be able to figure something out. But I'd recommend that to turn your array into something more like: $cart = array( '2' => '1', // id => quantity '34' => '1', '55' => '2', '67' => '1', '101' => '1' ); Then all you'd have to do to increase a value in the array is: $cart[$id]++; Also - look into making your <input/> tags arrays too to save yourself all that string manipulation: Instead of having the input be named "qty23" you could name it "qty[23]"... then in php it's simply $_POST['qty']['23']... Then you could update your quantities like: foreach($_POST['qty'] as $id => $qty) $cart[$id] = $qty; Quote Link to comment Share on other sites More sharing options...
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