<?php

//兼容函数array_column PHP5.5+
if (!function_exists('array_column')) {
    function array_column($input, $columnKey, $indexKey = NULL) {
        $columnKeyIsNumber = (is_numeric($columnKey)) ? TRUE : FALSE;
        $indexKeyIsNull = (is_null($indexKey)) ? TRUE : FALSE;
        $indexKeyIsNumber = (is_numeric($indexKey)) ? TRUE : FALSE;
        $result = array();
        foreach ((array) $input AS $key => $row) {
            if ($columnKeyIsNumber) {
                $tmp = array_slice($row, $columnKey, 1);
                $tmp = (is_array($tmp) && !empty($tmp)) ? current($tmp) : NULL;
            } else {
                $tmp = isset($row[$columnKey]) ? $row[$columnKey] : NULL;
            }
            if (!$indexKeyIsNull) {
                if ($indexKeyIsNumber) {
                    $key = array_slice($row, $indexKey, 1);
                    $key = (is_array($key) && !empty($key)) ? current($key) : NULL;
                    $key = is_null($key) ? 0 : $key;
                } else {
                    $key = isset($row[$indexKey]) ? $row[$indexKey] : 0;
                }
            }
            $result[$key] = $tmp;
        }
        return $result;
    }
}

# 计算时间差
# $begin_time 起始日期
# $end_time   结束日期 一般指当前日期
function timediff($begin_time, $end_time,$type) {
    $time   = $end_time - $begin_time;
    switch ($type) {
        case 'year':
            //总的年
            $timestr    = intval($time / 60 / 60 / 24 / 365);
            break;
        case 'month':
            //总的月
            $timestr    = intval($time / 60 / 60 / 24 / 30);
            break;
        case 'week':
            $timestr    = intval($time / 60 / 60 / 24 / 7);
            break;
        case 'day':
            $timestr    = intval($time / 60 / 60 / 24);
            break;
        case 'hour':
            $timestr    = intval($time / 60 / 60);
            break;
        case 'min':
            $timestr    = intval($time / 60);
            break;
        case 'sec':
            $timestr    = $time;
            break;
        default:
            //总的年
            $year   = intval($time / 60 / 60 / 24 / 365);
            //总的月
            $month  = intval($time / 60 / 60 / 24 / 30);
            //总的周
            $week   = intval($time / 60 / 60 / 24 / 7);
            //总的天数
            $day    = intval($time / 60 / 60 / 24);
            //总的小时
            $hour   = intval($time / 60 / 60);
            //总的分钟数
            $minute = intval($time / 60);
            //总的秒数
            $second = $time;
            $timestr = [
                'year'  =>$year,    //总的年
                'month'=>$month,    //总的月
                'week'=>$week,      //总的周
                'day'=>$day,        //总的天数
                'hour'=>$hour,      //总的小时
                'min'=>$minute,     //总的分钟数
                'sec'=>$second      //总的秒数
            ];
            break;
    }
    return $timestr;
}

//获取汉子的首字母
function getstrcharter($str) {
    global $_M, $_YW;
    if (empty($str)) return '';
    $fchar = ord($str{0});
    if ($fchar >= ord('A') && $fchar <= ord('z')) return strtoupper($str{0});
    $s1 = iconv('UTF-8', 'gb2312', $str);
    $s2 = iconv('gb2312', 'UTF-8', $s1);
    $s = $s2 == $str ? $s1 : $str;
    $asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
    if ($asc >= -20319 && $asc <= -20284) return 'A';
    if ($asc >= -20283 && $asc <= -19776) return 'B';
    if ($asc >= -19775 && $asc <= -19219) return 'C';
    if ($asc >= -19218 && $asc <= -18711) return 'D';
    if ($asc >= -18710 && $asc <= -18527) return 'E';
    if ($asc >= -18526 && $asc <= -18240) return 'F';
    if ($asc >= -18239 && $asc <= -17923) return 'G';
    if ($asc >= -17922 && $asc <= -17418) return 'H';
    if ($asc >= -17417 && $asc <= -16475) return 'J';
    if ($asc >= -16474 && $asc <= -16213) return 'K';
    if ($asc >= -16212 && $asc <= -15641) return 'L';
    if ($asc >= -15640 && $asc <= -15166) return 'M';
    if ($asc >= -15165 && $asc <= -14923) return 'N';
    if ($asc >= -14922 && $asc <= -14915) return 'O';
    if ($asc >= -14914 && $asc <= -14631) return 'P';
    if ($asc >= -14630 && $asc <= -14150) return 'Q';
    if ($asc >= -14149 && $asc <= -14091) return 'R';
    if ($asc >= -14090 && $asc <= -13319) return 'S';
    if ($asc >= -13318 && $asc <= -12839) return 'T';
    if ($asc >= -12838 && $asc <= -12557) return 'W';
    if ($asc >= -12556 && $asc <= -11848) return 'X';
    if ($asc >= -11847 && $asc <= -11056) return 'Y';
    if ($asc >= -11055 && $asc <= -10247) return 'Z';
    return 'ZZ';
}