foreach循环不适用于单个结果

Question

I have got the following array stored in the variable $details :

[formats] => Array ( 
        [format] => Array ( 
                 [0] => Array ( 
                    [formatId] => 1 
                    [code] => High 
                    [price] => Array ( 
                           [0] => 0.00 
                           [1] => 0.00 
                           [2] => 0.00 
                           [3] => 0.00 
                           [4] => 0.00 ) ) 
                  [1] => Array ( 
                     [formatId] => 2 
                     [code] => Med 
                     [price] => Array ( 
                            [0] => 0.00 
                            [1] => 0.00 
                            [2] => 0.00 
                            [3] => 0.00 
                            [4] => 0.00 ) ) 
                   ) )

and I use the following code to loop trough this array

<? foreach ($details['formats']['format'] as $format)
     {
        echo $format['code'];
     }
?>

Which works fine, but then, sometimes there is only one result in the array and then it looks like this:

[formats] => Array ( 
        [format] => Array ( 
                    [formatId] => 1 
                    [code] => High 
                    [price] => Array ( 
                           [0] => 0.00 
                           [1] => 0.00 
                           [2] => 0.00 
                           [3] => 0.00 
                           [4] => 0.00 )
                   ) )

Unfortunally my for each loop does not work then, because it is only a single array. How can this be solved? I cannot change the array.

I can use while or for loops if that is required, but I have no idea how

Answer 1

A very crude method of approaching the problem would be to just fold an 'if' around it;

<? 
if (isset($details['formats']['format'][0])){
    foreach ($details['formats']['format'] as $format)
    {
        echo $format['code'];
    }
} else {
    echo $details['formats']['format']['code'];
}
?>

This only works if the result array is consistant and it will always return [0] on multiple results.

Answer 2

This should work as well.

if ( is_array($details['formats']['format']) && array_key_exists("code", $details['formats']['format']) ) {
    echo $details['formats']['format']['code'];
} else if ( is_array( $details['formats']['format'] ) {
    foreach ($details['formats']['format'] as $format)
    {
        echo $format['code'];
    }
}