PHP switch two array keys

Question

I have an array:

$array['text6'] = array(
    'elem2' => 'text2',
    'elem3' => 'text3',
    'elem4' => 'text4',
    'elem5' => 'text5'
    'elem6' => 'text6'
);

And I would like to change, for example, text6 with a different key as follows:

$name_key = 'elem4';

// something action here
// and final array:

    $array['text4'] = array(
        'elem2' => 'text2',
        'elem3' => 'text3',
        'elem5' => 'text5'
        'elem6' => 'text6'
    );

How can i do this? I have 105 arrays, and I need to change each array in the same way, so when the array looks like this:

$array['text6'] = array(
    'elem2' => 'text2',
    'elem3' => 'text3',
    'elem4' => 'text4',
    'elem5' => 'text5'
    'elem6' => 'text6'
);

$array['othertext6'] = array(
    'elem2' => 'othertext2',
    'elem3' => 'othertext3',
    'elem4' => 'othertext4',
    'elem5' => 'othertext5'
    'elem6' => 'othertext6'
);

And I would like to change the main key with key number three (key → 'elem4'), it should do it in each array (different beetwen arrays are only in value, the keys are always the same):

$name_key = 'elem4';

// action...

$array['text4'] = array(
    'elem2' => 'text2',
    'elem3' => 'text3',
    'elem5' => 'text5'
    'elem6' => 'text6'
);

$array['othertext4'] = array(
    'elem2' => 'othertext2',
    'elem3' => 'othertext3',
    'elem5' => 'othertext5'
    'elem6' => 'othertext6'
);

How can i do this?

Answer 1

, , . , .

?

, "elem4" , ?

, :

, .

$list = array($array['text4'], $array['text5'], ... (all your other arrays here));

$name_key = 'elem4';
foreach ($list as $k => $v) {
   $new_key =  $v[$name_key];
   unset ($v[$name_key]);
   $list[$new_key] = $v;
   unset ($list[$k]);
}