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Deleting a value from an array

Hi all,

I have an array stored in a $_SESSION. I'm trying to remove an element but it doesn't seem to be working.

unset($_SESSION['favorite_link_array'][$link_id]);

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The array is a list of ids in no particular order like array(12453, 23123, 23424, 43535, 64334) etc..

How do I delete an entry with a matching value? Like from the above example, remove 23424.

Cheers

SOLUTION

babblo

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HainKurt

Usage Example Line 5 above should be

$newArray = remove_item_by_value($myArray, $removeThis);

I guess... are you sure $_SESSION['favorite_link_array'] is array? Maybe it is just a string!
in that case, you can use replace function, or split it make array, remove one item and then join the array to make it a string again and put into session back as string...

$_SESSION['favorite_link_array'] = replace($_SESSION['favorite_link_array'], $link_id,"");

but php supports array in session, so using it as array will make life easier...

http://stackoverflow.com/questions/2306159/array-as-session-variable

your code looks fine as long as yo have a valid array in session...

<?php
$myArray = array('item1', 'item2', 'item3' ...);
$removeThis = 'item2';

$newArray = remove_item_by_value($myArray, $removeThis);
?>

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SOLUTION

kelvinwkw

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ASKER CERTIFIED SOLUTION

Ray Paseur

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dolythgoe

ASKER

Cheers guys - Ray, professional as always :)

Yes, they are indeed unique values.

So populating your later example, would that be something like:

		while($row=mysqli_fetch_array($result))
		{
			$favorite_link_array[$row['link_id']] = $row['link_id'];
		}

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Ray Paseur

Yes, that looks right to me.