php multidimensional array - extracting keys

Question

i have a multidimensional array the first two statements of code work fine... notice them below...

      echo $arrayObjects['name'].'<br>';
      echo $arrayObjects['ipv4']['10.14.2.22']['type'].'<br>';

but i want to be able to return the keys in the ipv4 array, instead of having to hard code them like i did above. when i do the following:

      print_r( array_keys($arrayObjects['ipv4']));

I get the following output:

         Array ( [0] => 10.14.2.22 )

which is great. but how do i get the ip address returned to me as a variable?

$ips = array_keys($arrayObjects['ipv4']); $ip = $ips[0]; var_dump($ip); — Florent
– Florent, Commented Aug 10, 2012 at 15:49

iambriansreed · Accepted Answer · 2012-08-10 15:49:36Z

1

Try:

First Element:

$ip_address = array_shift(array_keys($arrayObjects['ipv4']));

Each Element:

foreach($arrayObjects['ipv4'] as $ip_address => $value){
    print_r($ip_address);
}

answered Aug 10, 2012 at 15:49

iambriansreed

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Jester · Accepted Answer · 2012-08-10 15:49:14Z

0

foreach( $arrayObjects['ipv4'] as $ip => $content )
{
 echo $ip;
}

answered Aug 10, 2012 at 15:49

Jester

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Comments

Stegrex · Accepted Answer · 2012-08-10 15:53:05Z

0

Use:

current(array_keys($arrayObjects['ipv4']));

This simply extracts the first element out of any array when used like this.

The value returned from this should be '10.14.2.22'

http://php.net/manual/en/function.current.php

answered Aug 10, 2012 at 15:53

Stegrex

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iambriansreed · Accepted Answer · 2012-08-10 16:10:48Z

0

You would do this in a foreach loop:

foreach ($arrayObjects['ipv4'] as $key => $value)
{
    // Echo out the key OR save it to another variable..
    echo $key;
}

edited Aug 10, 2012 at 16:10

iambriansreed

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answered Aug 10, 2012 at 15:48

David Barker

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