[SOLVED] couple array questions

[xander85]

I have a couple quick array questions:

 

First: How do you echo the array index value? I'm using the following code:

foreach($_SESSION['box'] as $CartItem[]=>$items)
{
foreach($items as $key => $item)
	{
            if($key) 
		{
			$class = 'order'.++$key;
		}
		else
		{
			$class = 'order';
		}
		echo "<div class='$class'>$item</div>";
	}
}

 

I would like to be able to delete an individual array element using this reference but I do not know how to display this. I want the value of, for example:

$_SESSION['box'][3], but don't know how to echo the 3.

 

Second, Is there a function that resets all array index values back to "normal" after deleting any array element using unset(). For example:

I have the array with values in 0, 1, 2, 3, 4 and I delete index value 3 so my array is than 0, 1, 2, 4. Is there a function to change this to: 0, 1, 2, 3 ???

[jitesh]

array array_keys ( array input [, mixed search_value [, bool strict]] )

 

array_keys will give you indexes of an array in an array.

[xander85]

But how do I access the individual index value for each one? I want to create a button that corresponds to each row in my array so I can delete an arbitrary row. Is this possible?

[sasa]

try

<?php
session_start();

// generate testing value
if (count($_SESSION['box']) == 0) $_SESSION['box'] =array(array('1-1','1-2'), array('2-1', '2-2', '2-3'), array('3-1', '3-2'), array('4-1'));

if (count($_POST)) 
foreach ($_POST as $key => $v) 
	if ($v == 'Delete' and array_key_exists($_SESSION['box'][$key])) 
		unset($_SESSION['box'][$key]);

$_SESSION['box'] = array_values($_SESSION['box']); // reorganize array keys
// try to refresh page !

echo '<form method="POST">';
foreach($_SESSION['box'] as $CartItem=>$items) {
foreach($items as $key => $item) echo '<div class="class'. ($key + 1) . '">'.$item.'</div>';
echo '<input type="submit" name="' . $CartItem . '" value="Delete" /><hr />';
}
// for testing
echo '<pre>';
print_r($_SESSION);
echo '</pre>';
?>

[xander85]

Thanks for the help!

 

I get the following warning and it does not remove the row:

 

Warning: Wrong parameter count for array_key_exists() on line 10

 

line 10 refers to:

 

if ($v == 'Delete' and array_key_exists($_SESSION['box'][$key]))

 

I'm pretty new at this so I'm not sure what to do.

 

[sasa]

sorry my mistake

change to if ($v == 'Delete' and array_key_exists($key, $_SESSION['box']))