PHP-工具类

PHP-日常接口

说明

PHP 工具类

---

根据出生日期算年龄

ceil((time()-strtotime($birthday))/(60 * 60 * 24 * 365));

二维数组根据中文排序

foreach ($date as $key => $value) {
   $name[$key]=iconv('UTF-8', 'GBK',$value['yllb']);
}
array_multisort($name, SORT_ASC, $date);

二维数组去重+数量

<?php 
$arr = array(
  array('user_id' => 100,'goods_id' => 10,'number' => 1,),
  array('user_id' => 102,'goods_id' => 10,'number' => 1,),
  array('user_id' => 102,'goods_id' => 10,'number' => 1,),
  array('user_id' => 102,'goods_id' => 10,'number' => 1,),
);
$result = array();
foreach($arr as $val){
         $key = $val['user_id'].'_'.$val['goods_id'];
         if(!isset($result[$key])){
               $result[$key] = $val;
         }else{
               $result[$key]['number'] += $val['number'];
         }
}
var_dump($result);
echo '<pre>';
var_dump(array_values($result));
echo '</pre>';
?>

金额大写

  /**
  *数字金额转换成中文大写金额的函数
  *String Int $num 要转换的小写数字或小写字符串
  *return 大写字母
  *小数位为两位
  **/
public function num_to_rmb($num){
    $c1 = "零壹贰叁肆伍陆柒捌玖";
    $c2 = "分角元拾佰仟万拾佰仟亿";
    //精确到分后面就不要了，所以只留两个小数位
    $num = round($num, 2); 
    //将数字转化为整数
    $num = $num * 100;
    if (strlen($num) > 10) {
        return "金额太大，请检查";
    } 
    $i = 0;
    $c = "";
    while (1) {
        if ($i == 0) {
            //获取最后一位数字
            $n = substr($num, strlen($num)-1, 1);
        } else {
            $n = $num % 10;
        }
        //每次将最后一位数字转化为中文
        $p1 = substr($c1, 3 * $n, 3);
        $p2 = substr($c2, 3 * $i, 3);
        if ($n != '0' || ($n == '0' && ($p2 == '亿' || $p2 == '万' || $p2 == '元'))) {
            $c = $p1 . $p2 . $c;
        } else {
            $c = $p1 . $c;
        }
        $i = $i + 1;
        //去掉数字最后一位了
        $num = $num / 10;
        $num = (int)$num;
        //结束循环
        if ($num == 0) {
            break;
        } 
    }
    $j = 0;
    $slen = strlen($c);
    while ($j < $slen) {
        //utf8一个汉字相当3个字符
        $m = substr($c, $j, 6);
        //处理数字中很多0的情况,每次循环去掉一个汉字“零”
        if ($m == '零元' || $m == '零万' || $m == '零亿' || $m == '零零') {
            $left = substr($c, 0, $j);
            $right = substr($c, $j + 3);
            $c = $left . $right;
            $j = $j-3;
            $slen = $slen-3;
        } 
        $j = $j + 3;
    } 
    //这个是为了去掉类似23.0中最后一个“零”字
    if (substr($c, strlen($c)-3, 3) == '零') {
        $c = substr($c, 0, strlen($c)-3);
    }
    //将处理的汉字加上“整”
    if (empty($c)) {
        return "零元";
    }else{
        return $c;
    }
}

随机生成红包算法

function makeHongbao($total, $num, $min = 0.01)
{
    $overPlus = $total - $num * $min; // 剩余待发钱数
    $base = 0; // 总基数
    // 存放所有人数据
    $container = array();
    // 每个人保底
    for ($i = 0; $i < $num; $i++) {
        // 计算比重
        $weight = round(lcg_value() * 1000);
        $container[$i]['weight'] = $weight; // 权重
        $container[$i]['money'] = $min; // 最小值都塞进去
        $base += $weight; // 总基数
    }

    $len = $num - 1; // 下面要计算总人数-1的数据,
    for ($i = 0; $i < $len; $i++) {
        $money = floor($container[$i]['weight'] / $base * $overPlus * 100) / 100; // 向下取整,否则会超出
        $container[$i]['money'] += $money;
    }

    // 弹出最后一个元素
    array_pop($container);
    $result = array_column($container, 'money');
    $last_one = round($total - array_sum($result), 2);
    array_push($result, $last_one);
    return $result;
}
var_dump(makeHongbao(20,20));

结尾

腹有诗书气自华，最是书香能致远。