Question

我有一个数组，我想按升序排序。

下面是我有的数组。

Array

[0] => 101.6mm x 101.6mm 
[1] => 50.8mm x 50.8mm 
[3] => 76.2mm x 76.2mm 
[4] => 100mm x 100mm 
[5] => 15mm x 15mm 
[6] => 20mm x 20mm 
[8] => 25mm x 25mm 
[10] => 30mm x 30mm 
[12] => 40mm x 40mm 
[13] => 50mm x 50mm 
[14] => 60mm x 60m 
[15] => 80mm x 80mm

提前致谢

Answer 1

只需将这些字符串转换为浮点值即可。可以使用PHP轻松完成。

$arr = array(

    "101.6mm x 101.6mm",
    "50.8mm x 50.8mm", 
    "76.2mm x 76.2mm", 
    "100mm x 100mm",
    "15mm x 15mm",
    "20mm x 20mm",
    "25mm x 25mm",
    "30mm x 30mm", 
    "40mm x 40mm",
    "50mm x 50mm",
    "60mm x 60mm",
    "80mm x 80mm",

);

$endArray = array();

foreach($arr as $item){

    $parts = explode("x", $item);

    array_push($endArray, array(

          (float)filter_var( $parts[0], FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION ),
          (float)filter_var( $parts[1], FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION )

    ));



}
echo '<pre>';
sort($endArray);
print_r($endArray);

Answer 2

您只需要为usort()编写自定义字符串部分比较功能：

$products = [
                "101.6mm x 101.6mm",
                "50.8mm x 50.8mm",
                "76.2mm x 76.2mm",
                "100mm x 100mm",
                "15mm x 15mm",
                "20mm x 20mm",
                "50mm x 50.2mm",
                "25mm x 25mm",
                "30mm x 45mm",
                "30mm x 30mm",
                "40mm x 40mm",
                "50mm x 50mm",
                "60mm x 60m",
                "80mm x 80mm",
    ];

usort($products,
    function($a, $b) {
        list($vals_a, $vals_b) = [explode('x', $a), explode('x', $b)];
        $vals_a[0] = preg_replace('/(\s|mm)/mui', '',$vals_a[0]);
        $vals_a[1] = preg_replace('/(\s|mm)/mui', '',$vals_a[1]);
        $vals_b[0] = preg_replace('/(\s|mm)/mui', '',$vals_b[0]);
        $vals_b[1] = preg_replace('/(\s|mm)/mui', '',$vals_b[1]);
        if ($vals_a[0] < $vals_b[0])
            return -1;
        elseif ($vals_a[0] > $vals_b[0])
            return +1;
        else {
            if ($vals_a[1] < $vals_b[1])
                return -1;
            elseif ($vals_a[1] > $vals_b[1])
                return +1;
            else return 0;
        }
    });

var_dump($products);

Answer 3

您可以使用标记SORT_NUMERIC

对数字进行排序

asort($array, SORT_NUMERIC);

使用这个数组：

$array = ['101.6mm x 101.6mm',
                  '50.8mm x 50.8mm',
                  '76.2mm x 76.2mm',
                  '100mm x 100mm',
                  '15mm x 15mm',
                  '20mm x 20mm',
                  '25mm x 25mm',
                  '30mm x 30mm',
                  '40mm x 40mm',
                  '50mm x 50mm',
                  '60mm x 60m',
                  '80mm x 80mm'];

asort($array, SORT_NUMERIC);

SORT_NUMERIC产生了这个清单：

15mm x 15mm

20mm x 20mm

25mm x 25mm

30mm x 30mm

40mm x 40mm

50mm x 50mm

50.8mm x 50.8mm

60mm x 60m

76.2毫米x 76.2毫米

80mm x 80mm

100mm x 100mm

101.6mm x 101.6mm

对我来说很好看:)）

当值具有字符串和数字时，如何对数组进行排序

3 个答案: