strstr替换PHP数组中的多个变量

Question

I'm working on a list of products that are written in multiple languages. I have an array for each product that displays it's languages like this:

Array ( [0] => DA [1] => DE [2] => EN [3] => ES [4] => FI [5] => FR [6] => IT [7] => JA [8] => KO [9] => NL [10] => NO [11] => PL [12] => PT [13] => RU [14] => SV [15] => ZH )

I need to replace these individual codes with their language names (so EN => English). I have the following code, and it works fine with regular strings, but I can't get it to work with this array. Any thoughts?

    $trans = array(
        "EN" => "English", 
        "ZH" => "Chinese", 
        "DA" => "Danish",
        "NL" => "Dutch", 
        "FI" => "Finnish", 
        "FR" => "French",
        "DE" => "German", 
        "IT" => "Italian", 
        "JA" => "Japanese",
        "KO" => "Korean", 
        "NO" => "Norwegian", 
        "PL" => "Polish",
        "PT" => "Portuguese", 
        "RU" => "Russian", 
        "ES" => "Spanish",
        "SV" => "Swedish", 
    );

    echo strtr($langcodes, $trans);

$langcodes holds the array values.

Answer 1

Proof that it works: http://codepad.org/PR5pPqcX

@David check out my answer. See below. If I'm correct, please credit me so I get points. Points motivate me to answer more questions.

$language_codes = array(0 => 'DA', 1 => 'DE', 2 => 'EN', 3 => 'ES', 4 => 'FI', 5 => 'FR', 6 => 'IT', 7 => 'JA', 8 => 'KO', 9 => 'NL', 10 => 'NO', 11 => 'PL', 12 => PT, 13 => 'RU', 14 => 'SV', 15 => 'ZH' );

$trans = array(
    "EN" => "English", 
    "ZH" => "Chinese", 
    "DA" => "Danish",
    "NL" => "Dutch", 
    "FI" => "Finnish", 
    "FR" => "French",
    "DE" => "German", 
    "IT" => "Italian", 
    "JA" => "Japanese",
    "KO" => "Korean", 
    "NO" => "Norwegian", 
    "PL" => "Polish",
    "PT" => "Portuguese", 
    "RU" => "Russian", 
    "ES" => "Spanish",
    "SV" => "Swedish", 
);


foreach ($language_codes as $key => $code)
    if (!empty($trans[$code]))
        $language_codes[$key] = $trans[$code];    

var_dump($language_codes);

Proof that it works: http://codepad.org/PR5pPqcX