php - Hightest value of an associative array

Question

Is there any easy way to get the hightest numeric value of an associative array?

$array = array(
    0 => array(
        'key1' => '123',
        'key2' => 'values we',
        'key3' => 'do not',
        'key4' => 'care about'
    ),
    1 => array(
        'key1' => '124',
        'key2' => 'values we',
        'key3' => 'do not',
        'key4' => 'care about'
    ),
    2 => array(
        'key1' => '125',
        'key2' => 'values we',
        'key3' => 'do not',
        'key4' => 'care about'
    )
);

AwesomeFunction($array, 'key1'); // returns 2 ($array key)

Please be kind since this question was written with a phone. Thanks.

Answer 1

PHP 5.5 introduced array_column() which makes this much simpler:

echo max(array_column($array, 'key1'));

Demo