CODEWITHSUNDEEP
php
张剑桥
张剑桥

Reputation: 67

passing array and user input using form

I am having difficulties dealing with form that passes an array. I have included 5 variables ("$a,$b,$c,$d,$e") in an array called $product, then I passed it to another frame use form along with an input that requires user typing in a value. So there would be a array and an input being passed at the same time. So should I use "post" or "get"? It seems I should use "post" to pass the array, but the user input could only be passed via "get" right? Following is the code I had (the form is inside a table):

print "<td><form class=button action='bottom_right.php' method='post' target='bottom_right'>
        <input type='text' name='quantity'>
        <input type='hidden' name='product' value='<?php echo($product) ?>'>
        <button type='submit' class='btn btn-primary mb-2'>Add</button>
      </form></td>";

Besides, how could I retrieve the contents from another frame? Should that be something like below? How could I echo a single variable from the array?

<?php  
session_start();
$quantity=$_POST['quantity'];
$product=$_POST['product'];
echo $quantity;
echo $product['a'];
echo $b;
?>

Looking forwards to your reply! Cheers!

Upvotes: 0

Views: 954

Answers (1)

ficuscr
ficuscr

Reputation: 7054

Might be as simple as using explode/implode to transport the array.

<input type='hidden' name='product' value='<?= implode(',', $product) ?>' />

And then in PHP, you'll be looking for a string of concentated values under the product key.

<?php  

$quantity = (isset($_POST['quantity'])) $_POST['quantity'] ? : null;
$product = (isset($_POST['product'])) $_POST['product'] ? : '';
$productArray = explode(',', $product);

var_dump($productArray);

You could use POST or GET. You can convert the array to a string, using a delimiter to tokenize the parts, or you could use multiple hidden fields, one for each value in the array. 

<!-- would probably POST if going this route...? -->
<input type='hidden' name='product[a]' value='<?= $product['a'] ?>' />
<input type='hidden' name='product[b]' value='<?= $product['b'] ?>' />

Play around with it and use var_dump($_POST); to understand how the approaches modify what you receive.

Upvotes: 1

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