Question

新来的，所以感谢您花时间阅读我的问题。

我正在运行一些PHP代码，用于将屏幕上输入的数字与数据库中输入的数字进行比较。我遇到的问题是在操作每一行之后对二维数组进行排序。看起来好像正在删除数组ID号。我想按列[2]按降序排序数组。任何人都可以提供任何帮助吗？

while( $a_row = mysql_fetch_array( $result))
    {
    $draw = array($a_row['Drawn1'], 
        $a_row['Drawn2'], 
        $a_row['Drawn3'], 
        $a_row['Drawn4'], 
        $a_row['Drawn5'], 
        $a_row['Drawn6'], 
        $a_row['Drawn7'], 
        $a_row['Drawn8']);
    $numbers = array("6", "9", "4", "8", "14", "18");
    if (count(array_intersect($draw, $numbers)) >= 1) {
        $rs = array(($a_row['DrawNo']), join(" , ",array_intersect($draw, $numbers)), count(array_intersect($draw, $numbers)));
    } else {
        $rs = null; 
    }
    array_multisort($rs[1], SORT_NUMERIC, SORT_DESC, $rs[0], SORT_ASC, SORT_STRING);
    print_r ($rs);
    echo  "<br />";
    }

这就是输出的样子。

Array ( [0] => A0048 [1] => 14 [2] => 1 )
Array ( [0] => A0049 [1] => 6 , 14 , 8 , 18 [2] => 4 )
Array ( [0] => A0050 [1] => 14 [2] => 1 )
Array ( [0] => A0051 [1] => 14 [2] => 1 )
Array ( [0] => A0052 [1] => 18 [2] => 1 )
Array ( [0] => A0053 [1] => 6 , 14 [2] => 2 )
Array ( [0] => A0054 [1] => 6 [2] => 1 )
Array ( [0] => A0055 [1] => 14 [2] => 1 )
Array ( [0] => A0056 [1] => 4 [2] => 1 )
Array ( [0] => A0057 [1] => 9 , 6 , 4 [2] => 3 )

感谢您的时间 zeroanarchy

Answer 1

重新编制索引的数字数组键是array_multisort()记录的行为的一部分。如果需要保留密钥，则需要将它们转换为字符串密钥。

Answer 2

你可能正在寻找： http://php.net/manual/en/function.array-multisort.php

在二维数组中排序列

2 个答案: