PHP 闭包函数 function use 用法实例

/**
 * @param string $hisStart
 * @param string $hisEnd
 * @param int    $range
 * @param string $format
 *
 * @return array
 */
function createHisRange($hisStart = ‘00:00:00‘, $hisEnd = ‘23:59:59‘, $range = 3600, $format = ‘H:00:00‘)
{
    return array_map(function ($time) use ($format) {
        return date($format, $time);
    }, range(strtotime($hisStart), strtotime($hisEnd), $range));
}

/**
 * @param        $ymdStart
 * @param bool   $ymdEnd
 * @param int    $range
 * @param string $format
 *
 * @return array
 */
function createYmdRange($ymdStart, $ymdEnd = true, $range = 86400, $format = ‘Y-m-d‘)
{
    return array_map(function ($time) use ($format) {
        return date($format, $time);
    }, range(strtotime($ymdStart), strtotime($ymdEnd), $range));
}