PHP Map to use key in value for associative array

Question

I have the following given associative array, showing me how many items I have of each key.

'story' => 10
'image' => 20
'video' => 30
'audio' => 40

I'm trying to transform the array so I can use the key string inside my value, I want to get the following result

'story' => 'Story (10)'
'image' => 'Image (20)'
'video' => 'Video (30)'
'audio' => 'Audio (40)'

I've tried

I've tried the following method, but it resets the keys to indexes (0, 1, 2, 3)

return array_map(function ($key, $value) {
    return $key . "(" . $value . ")";
}, array_keys($mergedArray), $mergedArray);

MH2K9 · Accepted Answer · 2019-08-27 10:05:53Z

4

Try using array_walk() instead of array_map()

array_walk($mergedArray, function (&$value, $key) { $value = ucwords($key) . "($value)"; });
print_r($mergedArray);

Working demo

Output:

Array
(
    [story] => Story(10)
    [image] => Image(20)
    [video] => Video(30)
    [audio] => Audio(40)
)

answered Aug 27, 2019 at 10:05

MH2K9

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2 Comments

Miguel Stevens Over a year ago

Thanks, is passing by reference supported in PHP7.X? I mean is it something that will keep existing, or be deprecated?

MH2K9 Over a year ago

Yes! it is supported by PHP 7.x. See official documentation.

Vinay Patil · Accepted Answer · 2019-08-27 10:07:45Z

3

$arr = [
    "story" => 10,
    "image" => 20,
    "video" => 30,
    "audio" => 40
];

foreach($arr as $key => $value) {
    $arr[$key] = ucfirst($key)." (".$value.")";
}

Here is the demo

answered Aug 27, 2019 at 10:07

Vinay Patil

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