PHP: How to remove key from assoc array while leaving values intact

Question

I have an array like this.

array('root'=> array(
      'auth'=>'stringKey',
       'version'=>'4057',
       '...'=>'...'
  )
  )

Now I want to remove the outer array and root key and so I get array like below. i.e reduce it to one dimensional array

array(
  'auth'=>'stringKey',
   'version'=>'4057',
   '...'=>'...'
)

@MarkBaker copy to new array?. is there any better way to modify array in place as these are results from api calls and am worried about eating up memory — Cholthi Paul Ttiopic
– Cholthi Paul Ttiopic, Commented Jan 25, 2017 at 8:05
Better way! Why do you need it, because you can always directly reference the sub-array anyway using $myArray['root']... but I doubt if any other approach will be faster or more memory efficient — Mark Baker
– Mark Baker, Commented Jan 25, 2017 at 8:09

Leandro Papasidero · Accepted Answer · 2017-01-25 08:00:33Z

2

$array = array(
      'root'=> array(
           'auth'=>'stringKey',
           'version'=>'4057',
           '...'=>'...'
       )
);

print_r($array['root']);

answered Jan 25, 2017 at 8:00

Leandro Papasidero

3,7381 gold badge20 silver badges33 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Cholthi Paul Ttiopic Over a year ago

if the array is large, will the performance not degrade as there is coping involved

Leandro Papasidero Over a year ago

Maybe half of a millisecond slower. It shouldn't be an issue

Ehsan Ilahi · Accepted Answer · 2017-01-25 08:21:07Z

2

Try this it is work for me

    <?php $myarr = array('root'=> array(
              'auth'=>'stringKey',
               'version'=>'4057',
               '...'=>'...'
          )
          );

        $array = call_user_func_array('array_merge',$myarr);
        print_r($array);

/*
output 

Array
(
    [auth] => stringKey
    [version] => 4057
    [...] => ...
)


*/
    ?>

edited Jan 25, 2017 at 8:21

answered Jan 25, 2017 at 8:04

Ehsan Ilahi

2985 silver badges15 bronze badges

3 Comments

Ehsan Ilahi Over a year ago

let me do online example for you

Ehsan Ilahi Over a year ago

you can see click here

Ehsan Ilahi Over a year ago

its assuming there are multiple arrays as level one:

Deep Kakkar · Accepted Answer · 2017-01-25 08:10:45Z

0

You can overwrite the existing variable with the :

$myarray = array('root'=> array(
      'auth'=>'stringKey',
       'version'=>'4057',
       '...'=>'...'
  )
  )

$myarray = $myarray['root'];

Check demo

answered Jan 25, 2017 at 8:10

Deep Kakkar

6,3054 gold badges43 silver badges80 bronze badges

Collectives™ on Stack Overflow

PHP: How to remove key from assoc array while leaving values intact

3 Answers 3

2 Comments

3 Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

3 Comments

Comments

Related