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Question about requests

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May 03.2005

Hello

I’m a newbie of PHP and must develope a very simple shop cart (no pay functionality etc)
On every page I have up to 20 products (its dynamic depending on what area the vistor visits).

I thought I could do something like this…
1) The visitor choose numbers of one product and hit the button ‘add to shop cart’
2) on the page add.php I make a readrequest (POST) what has been submitted.

Lets say I have 20 products on one page and the visitor choose to submit item nr 4…how do I solve that when reading the request in add.php as I know I have to know which items that belongs to the form on the previous page so I can make a read request of submitted item.

Is there a way to solve this dynamicly…or do you recommend me to do this request through GET request?

Thanks in advance

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PHP

4 Comments(s) ↴

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@scragarMay 03.2005 — each item should have it's own unique ID.

and if every item has a different ID you should be able to ignore where they came from(although it wouls be nice to hold it in a session for redirection purposes).
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@digital_stormauthorMay 03.2005 — Hello

Yes all my items have their unique id but as I know from PHP I have to do like this to get a value from the request $_POST['name of my item']; that means that I have to controll all items under current category if they are set on previous page or not or am I missing something?

My thought was to save a 'shop cart' as a session object including objects of kind 'orderers'

Thanks for helping me

/D_S





each item should have it's own unique ID.

and if every item has a different ID you should be able to ignore where they came from(although it wouls be nice to hold it in a session for redirection purposes).[/QUOTE]
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@scragarMay 03.2005 — <a href="buy.php?id=xx"><img src="buyNow.gif" alt="Buy Now"></a>


buy.php:[code=php]$ID = $_GET['id'];
if(preg_match("/[^0-9]/", $ID)){//error, not a number for ID
echo "we appear to have a problem, your item ID was invalid.";
}else{
if(mysql_num_rows(mysql_query("SELECT id FROM items WHERE id=$ID"))){
//item exist
echo "item added to your cart.";

// add the item to the cart and stuff.

}else{
echo "item cannot be found, please try again.";
};
};[/code]
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@digital_stormauthorMay 03.2005 — Thank you very much!

/D_S


<a href="buy.php?id=xx"><img src="buyNow.gif" alt="Buy Now"></a>


buy.php:[code=php]$ID = $_GET['id'];
if(preg_match("/[^0-9]/", $ID)){//error, not a number for ID
echo "we appear to have a problem, your item ID was invalid.";
}else{
if(mysql_num_rows(mysql_query("SELECT id FROM items WHERE id=$ID"))){
//item exist
echo "item added to your cart.";

// add the item to the cart and stuff.

}else{
echo "item cannot be found, please try again.";
};
};[/code][/QUOTE]
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