Looking for a shortcut: Knowing the index position of an array, howcan i get the next $key available

[SM]

Hello,

Knowing the index position of an array, how can i get the next $key
available, if it exists. I've found a solution but I was wondering if
there was a shorcut in PHP.

i.e:

$cats = array (
456=>'myown',
186=>'getto',
714=>'many',
484=>'wondering',
775=>'ok'
);

In this example, I know that the index postion is 2. So the return
$key should be the next one available, if it exists... that is: 484.
This is how i coded:

$index = 2;
$id = array_slice($cats, $index, 1, true);

foreach($id as $key=>$value) {
echo $key;
}

I've look at all the functions on the php web site and couldn't find a
shortcut to this.

Any ideas?

Thanks in advance
Marco

[macca]

http://uk.php.net/next

[Leigh Finch]

SM wrote:

Hello,

Knowing the index position of an array, how can i get the next $key
available, if it exists. I've found a solution but I was wondering if
there was a shorcut in PHP.

i.e:

$cats = array (
456=>'myown',
186=>'getto',
714=>'many',
484=>'wondering',
775=>'ok'
);

In this example, I know that the index postion is 2. So the return
$key should be the next one available, if it exists... that is: 484.
This is how i coded:

$index = 2;
$id = array_slice($cats, $index, 1, true);

foreach($id as $key=>$value) {
echo $key;
}

I've look at all the functions on the php web site and couldn't find a
shortcut to this.

Any ideas?

Thanks in advance
Marco

Hi Marco,
I think I understand what you are trying to do. Why not increase index
by 1 in the array slice function?

A quicker/nicer way to return the current key of an array, is to use the
function key(), rather than using a foreach loop.

Heres what I came up with

$index = 2; //known index

$id = array_slice($cats, $index + 1, 1, true); // splice, the next index

echo key($id); echo the key

Alternatively, you could condense it down a line:

$index = 2; //known index

echo key(array_slice($cats, $index + 1, 1, true)); // echo out the next
index

Hope this helps, Cheers
Leigh Finch
www.phpmaniac.net

[Mikhail Kovalev]

On 25 Mai, 07:54, SM <[e-mail]:

Hello,

Knowing the index position of an array, how can i get the next $key
available, if it exists. I've found a solution but I was wondering if
there was a shorcut in PHP.

i.e:

$cats = array (
* * * * 456=>'myown',
* * * * 186=>'getto',
* * * * 714=>'many',
* * * * 484=>'wondering',
* * * * 775=>'ok'
);

In this example, I know that the index postion is 2. So the return
$key should be the next one available, if it exists... that is: 484.
This is how i coded:

$index = 2;
$id = array_slice($cats, $index, 1, true);

foreach($id as $key=>$value) {
* * * * echo $key;

}

I've look at all the functions on the php web site and couldn't find a
shortcut to this.

Any ideas?

Thanks in advance
Marco

$cats_keys = array_keys($cats);

echo $cats_keys[3];

?

[SM]

On May 25, 6:32 am, Mikhail Kovalev <[e-mail]:

On 25 Mai, 07:54, SM <[e-mail]:

Hello,

Knowing the index position of an array, how can i get the next $key
available, if it exists. I've found a solution but I was wondering if
there was a shorcut in PHP.

i.e:

$cats = array (
456=>'myown',
186=>'getto',
714=>'many',
484=>'wondering',
775=>'ok'
);

In this example, I know that the index postion is 2. So the return
$key should be the next one available, if it exists... that is: 484.
This is how i coded:

$index = 2;
$id = array_slice($cats, $index, 1, true);

foreach($id as $key=>$value) {
echo $key;

}

I've look at all the functions on the php web site and couldn't find a
shortcut to this.

Any ideas?

Thanks in advance
Marco

$cats_keys = array_keys($cats);

echo $cats_keys[3];

?

Thanks guys. I've tried a combination of all the solutions proposed
and it work perfectly!

Marco