PHP array mapping

No, there is no faster way than your implemented code. All other methods will be slower due to the overhead of a function call. For a small array the difference will be trivial, but for a large one (100 members or so, depending on implementation), the difference can be huge...

You could array_map it, but I'd stick with the raw PHP you posted above... It's easier to maintain and IMHO more readable...

After all, tell me which at a glance tells you what it does more:

$results = array();foreach ($array as $value) {    $results[] = $value['title'];}

vs

$results = array_map(function($element) {        return $element['title'];    },    $array);

Or:

$callback = function($element) {    return $element['title'];}$results = array_map($callback, $array);

Personally, the first does it for me the best. It's immediately obvious without knowing anything what it's doing. The others require knowledge of array_map semantics to understand. Couple that with the fact that array_map is slower, and it's a double win for foreach.

Code should only be as elegant as necessary. It should be readable above all else...

Sure, use array_map:

function getLabelFromMethod($method) {   return $method['label'];}$labels = array_map('getLabelFromMethod', $methods);

If you are on PHP 5.3+, you can also use a lambda function:

$labels = array_map(function($m) {   return $m['label'];}, $methods);

As of PHP 5.5+, this is exactly what array_column() does:

$methodsLabel = array_column($methods, 'label');

http://php.net/manual/function.array-column.php

3v4l example: https://3v4l.org/ZabAb