Sort array of objects by date field

usort($array, function($a, $b) {
    return strtotime($a['date']) - strtotime($b['date']);
});

Or if you don’t have PHP 5.3:

function cb($a, $b) {
    return strtotime($a['date']) - strtotime($b['date']);
}
usort($array, 'cb');

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