Question

我遇到了一个数组

的问题

    $myarray =array();
    for($i=1;$i<=12;$i++){
          $myarray =array(
                        'userId'=>10,
                         'sum'=>40);
          echo"<pre>";print_r($myarray);    
       }

这是我的虚拟数组，只是想了解实际面临的问题，这个循环一直生成一个包含元素$userid或$sum的数组

运行上面的代码后，它alwayz显示相同的数组，因为我正在使用静态值，但在实时它的生成数组有不同的$userid或$sum

喜欢这个

Array
(
 [sum] => 0
 [userId] => 1
)
Array
(
 [sum] => 5
 [userId] => 4
)
Array
(
 [sum] => 30
 [userId] => 5
)
Array
(
 [sum] => 0
 [userId] => 16
)
Array
(
 [sum] => 0
 [userId] => 17
)
Array
(
 [sum] => 16
 [userId] => 34
)

我想将所有这些数组合并到一个数组中，以便我可以轻松找到

来自内部循环和相应$sum生成的所有这些数组的最大$userid。

循环后的输出应为

'first winner $sum =  30  $userid =5 `    
'second winner $sum =  16  $userid =34` 
'first winner $sum =  5  $userid =4 `

请建议我如何做到这一点，因为所有不同的数组都带有循环

由于

Answer 1

在每次迭代中，您都会覆盖基本数组内容。

$myarray = array();

for ($i = 1; $i <= 12; $i++) {
    $myarray[] = array(
        'userId' => rand(1, 100),
        'sum' => rand(1, 100),
    );
}

echo "<pre>"; var_dump($myarray);

$myarray将包含：

Array(
   [0] => ['userId' => 5, 'sum' => 45],
   [1] => ['userId' => 1, 'sum' => 85],
   ...
   [11] => ['userId' => 8, 'sum' => 41],
);

要按sum键对该数组进行排序，请使用usort()

usort($myarray, function ($a, $b) {
    return $a['sum'] - $b['sum'];
});

Answer 2

你能试试吗？

$sumArray=array(
   0 => array('userId' => 5, 'sum' => 45),
   1 => array('userId' => 1, 'sum' => 85),
   2 => array('userId' => 8, 'sum' => 41)
);

$dummyArray = array();
foreach ($sumArray as $sumKey => $sumValue)
{
   $dummyArray[$sumKey] = $sumValue['sum'];
}
array_multisort($dummyArray, SORT_DESC, $sumArray);


$count=0;
foreach ($sumArray as $sumKey => $sumValue)
{
   $count=$count+1;
   $rank=convert_number_to_words($count);
   echo $rank.' winner $sum='.$sumValue['sum'].'<br/>';
}

来自http://www.karlrixon.co.uk/writing/convert-numbers-to-words-with-php/

的功能

function convert_number_to_words($number) {

    $hyphen      = '-';
    $conjunction = ' and ';
    $separator   = ', ';
    $negative    = 'negative ';
    $decimal     = ' point ';
    $dictionary  = array(
        0                   => 'zero',
        1                   => 'First',
        2                   => 'Second',
        3                   => 'Third',
        4                   => 'Fourth',
        5                   => 'fiveth',
        6                   => 'sixth',
        7                   => 'seventh',
        8                   => 'eighth',
        9                   => 'nineth',
        10                  => 'tenth',
        11                  => 'eleventh',
        12                  => 'twelvth',
        13                  => 'thirteenth',
        14                  => 'fourteenth',
        15                  => 'fifteenth',
        16                  => 'sixteenth',
        17                  => 'seventeenth',
        18                  => 'eighteenth',
        19                  => 'nineteenth',
        20                  => 'twenty',
        30                  => 'thirty',
        40                  => 'fourty',
        50                  => 'fifty',
        60                  => 'sixty',
        70                  => 'seventy',
        80                  => 'eighty',
        90                  => 'ninety',
        100                 => 'hundred',
        1000                => 'thousand',
        1000000             => 'million',
        1000000000          => 'billion',
        1000000000000       => 'trillion',
        1000000000000000    => 'quadrillion',
        1000000000000000000 => 'quintillion'
    );

    if (!is_numeric($number)) {
        return false;
    }

    if (($number >= 0 && (int) $number < 0) || (int) $number < 0 - PHP_INT_MAX) {
        // overflow
        trigger_error(
            'convert_number_to_words only accepts numbers between -' . PHP_INT_MAX . ' and ' . PHP_INT_MAX,
            E_USER_WARNING
        );
        return false;
    }

    if ($number < 0) {
        return $negative . convert_number_to_words(abs($number));
    }

    $string = $fraction = null;

    if (strpos($number, '.') !== false) {
        list($number, $fraction) = explode('.', $number);
    }

    switch (true) {
        case $number < 21:
            $string = $dictionary[$number];
            break;
        case $number < 100:
            $tens   = ((int) ($number / 10)) * 10;
            $units  = $number % 10;
            $string = $dictionary[$tens];
            if ($units) {
                $string .= $hyphen . $dictionary[$units];
            }
            break;
        case $number < 1000:
            $hundreds  = $number / 100;
            $remainder = $number % 100;
            $string = $dictionary[$hundreds] . ' ' . $dictionary[100];
            if ($remainder) {
                $string .= $conjunction . convert_number_to_words($remainder);
            }
            break;
        default:
            $baseUnit = pow(1000, floor(log($number, 1000)));
            $numBaseUnits = (int) ($number / $baseUnit);
            $remainder = $number % $baseUnit;
            $string = convert_number_to_words($numBaseUnits) . ' ' . $dictionary[$baseUnit];
            if ($remainder) {
                $string .= $remainder < 100 ? $conjunction : $separator;
                $string .= convert_number_to_words($remainder);
            }
            break;
    }

    if (null !== $fraction && is_numeric($fraction)) {
        $string .= $decimal;
        $words = array();
        foreach (str_split((string) $fraction) as $number) {
            $words[] = $dictionary[$number];
        }
        $string .= implode(' ', $words);
    }

    return $string;
}

如何连接数组

2 个答案: