[SOLVED] Opposite to array_push() ?

[marmite]

I'm searching php.net for this and having no luck.

 

I want to REMOVE one line from an array, and shift all the associated IDs down by one.

 

E.g.

 

Array:

1 => apple

2 => orange

3 => banana

 

somefunction(remove item 2)

 

Resulting array:

1 => apple

2 =>banana

 

Any ideas ???

 

Thanks

Emma

[effigy]

<pre>
<?php
$data = array (
	'apple',
	'orange',
	'banana'
);
print_r($data);
array_splice($data, 1, 1);
print_r($data);
?>
</pre>

[marmite]

Thanks for this, it certainly beats the hours I just spent getting array_values() and unset() to work

 

However, I have a new problem. Array_splice reindexes from 0. Can I get it to reindex from 1 instead?

 

The problem is that when 0 is used, if the user wants to delete that item, they are taken to "cart.php?deleteid=0" (before being swiftly relocated)

 

System thinks "deleteid=0" is equivalent to deleteid not being set, so my test fails and the item is not deleted.

 

Any thoughts greatly appreciated.

[effigy]

<pre>
<?php
$data[1] = 'apple';
$data[2] = 'orange';
$data[3] = 'banana';

print_r($data);
array_splice($data, 1, 1);

array_unshift($data, '');
unset($data[0]);

print_r($data);
?>
</pre>

 

A more advanced function is in the User Notes.

[kenrbnsn]

That is probably because you're using something like:

<?php
if (!empty($_GET['deleteid'])) {
//
// do the code
//
}
?>

When you really want to do

<?php
if (isset($_GET['deleteid'])) {
//
// do the code
//
}
?>

 

When a value is 0, the function empty() will return TRUE.

 

Ken

[marmite]

I was just using if($_GET['deleteid']) - is that bad practise?

 

Works now - only three hours on this silly thing!

 

Thanks for your help

[kenrbnsn]

The statement "f($_GET['deleteid']))" will return FALSE when the value is 0 also.

 

Ken