Question

I’m new to php and I was wondering how I would be able to create something like a delete button for deleting items in a list that would be generated from a dynamically growing array.

An example of what I mean is this:

<?php
if (isset($_REQUEST['foo']))
{
    if (isset($_SESSION['words']))
    {
        $_SESSION['words'][] = 'added word';
    }
    else
    {
        $_SESSION['words'] = array('cat', 'dog', 'you', 'me');
    }

    foreach ($_SESSION['words'] as $key => &$value)
    {
        echo "<p>" . 
             $value . 
             " - <input type='submit' name='delete_" . 
             $value . 
             "' value='Delete Entry' /></p>";
    }

    if (isset($_REQUEST['clear']))
    {
        session_destroy();
    }
?>

Where, on every button click that gets sent to my script it would echo out the array with the buttons.

I’d like to link the delete buttons to a function that looked something like:

function delete_entry( $index )
{
    unset($_SESSION['words'][$index]);
    $_SESSION['words'] = array_values($_SESSION['words']);
}

Is what I’m asking even possible?

Answer 1

Your array of words seem to be stored in your session variable, so I’m assuming that you want to remove/add words to it. How about this…?

1. Have a separate form for each word with a hidden field saying what the word is:

   So in the for loop:
   echo "<form><p>".$value." - <input type='submit' value='Delete Entry' /></p><input type=\"hidden\" name=\"delword\" value=\"".$value."\"/></form>";

2. if(isset[$_REQUEST['delword']]) remove it from the session array (do this before you do your echoing for loop. (You could use array_search to find the element, then run unset as you suggested)

Let me know if you want me to elaborate on this suggestion.