Numeric Arrays

[Dysan]

Using a Numeric Array, how I add and delete data?

[unidox]

Manually, or a form that edits the db data

[Dysan]

I presume manually, please correct me if mistaken.

 

Basically I want to store link's ID (The ID at the end of each link) inside an array, upon a link being clicked (e.g. Link 1 shown below). Then upon another link being clicked (e.g Link 2 shown below), delete the appropriate ID from the array, depending on what ID the link contains?

 

1) www.website.co.uk/functions.php?action=add&id=1 - Add Item

 

2) www.website.co.uk/functions.php?action=delete&id=1 - Delete Item

 

Cheers.

[boushley]

Well... on the page you could do something like

$myArray[$id] = null;

[Dysan]

What does that do?

Can you give me some example code, on how to actually add the id number found at the end of the links, to the array?

[obsidian]

There are a number of ways to do things like you're after. Here are a few functions to look at:

array_push()

array_pop()

unset()

 

Something like this script may help, too:

<?php
header('Content-type: text/plain');
$numbers = array(); // empty
for ($i = 1; $i <= 10; $i++)
{
  $numbers[] = $i;
}
print_r($numbers);

unset($numbers[4]);
print_r($numbers);

array_pop($numbers);
print_r($numbers);

$new = array();
foreach ($numbers as $k => $v)
{
  if ($k != 3 && $k != 7)
  {
    $new[$k] = $v;
  }
}
print_r($new);
?>

[obsidian]

What does that do?

Can you give me some example code, on how to actually add the id number found at the end of the links, to the array?

 

I think what you're wanting is something like this:

<?php
$id = $_GET['id'];

$array = array(1, 2, 3, 4, 5);
if ($_GET['action'] == 'add')
{
  $array[] = $id;
  // ...or...
  array_push($array, $id);
}
elseif ($_GET['action'] == 'delete')
{
  $new = array();
  foreach ($array as $item)
  {
    if ($item != $id)
    {
      $new[] = $item;
    }
  }
  $array = $new;
}
?>