CODEWITHSUNDEEP
phparrays
user2426701
user2426701

Reputation:

PHP switch array values

I have a very simple array like this:

Array ( [friend_id] => 180 [user_id] => 175 )

What I want to do is just to switch the values, in order to be come this:

Array ( [friend_id] => 175 [user_id] => 180 )

Is there any elegant NON STATIC way in PHP to do it?

Upvotes: 0

Views: 390

Answers (5)

o p
o p

Reputation: 13

How about using array_flip?

array array_flip ( array $trans )

$myar = array('apples', 'oranges', 'pineaples');                                   print_r($myar);                                                                   
print_r(array_flip($myar));      
Array
(
    [0] => apples
    [1] => oranges
    [2] => pineaples
)
Array
(
    [apples] => 0
    [oranges] => 1
    [pineaples] => 2
)

Upvotes: 0

fvu
fvu

Reputation: 32973

A bit longish, but I think it satisfies you requirements for 2 element arrays, just as you used in your example:

// your input array = $yourarray;
$keyarray = array_keys($yourarray);
$valuearray = array_values($yourarray);
/// empty input array just to make sure
$yourarray = array();
$yourarray[$keyarray[0]] = $valuearray[1];
$yourarray[$keyarray[1]] = $valuearray[0];

Basically Orangepill's answer done manually...

Upvotes: 0

mavili
mavili

Reputation: 3424

$tmp = $array['user_id'];
$array['user_id'] = $array['friend_id'];
$array['friend_id'] = $tmp;

Upvotes: -1

Orangepill
Orangepill

Reputation: 24655

you can use array_combine and array_reverse

$swapped = array_combine(array_keys($arr), array_reverse(array_values($arr)));

Upvotes: 3

Marc B
Marc B

Reputation: 360772

No. Use a temporary value:

$temp = $array['friend_id'];
$array['friend_id'] = $array['user_id'];
$array['user_id'] = $temp;

Upvotes: 2

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