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@ 2014-07-03T21:42:21Z

<?php
$input = Array (
    '2014-07-03' => Array
        (
            'results' => 0,
            'clicks' => 0,
            'contacted' => 0
        ),

    '2014-07-02' => Array (
            'results' => 12,
            'clicks' => 5,
            'contacted' => 1
        )

);

echo implode(', ', array_map(function ($entry) {
  return $entry['clicks'];
}, $input));

Output
Performance
VLD
References
Branches

array_map: documentation ( source)
implode: documentation ( source)

preferences:dark modelive preview

39.33 ms | 402 KiB | 5 Q