php - 当字符串数组包含 int 值时如何对其进行排序

Question

$files = array (
  '/test/tmp/file_7.sql.gz',
  '/test/tmp/file_9.sql.gz',
  '/test/tmp/file_11.sql.gz',
  '/test/tmp/file_1.sql.gz',
  '/test/tmp/file_3.sql.gz',
  '/test/tmp/file_12.sql.gz',
  '/test/tmp/file_13.sql.gz',
  '/test/tmp/file_10.sql.gz',
  '/test/tmp/file_5.sql.gz',
  '/test/tmp/file_2.sql.gz',
  '/test/tmp/file_8.sql',
  '/test/tmp/file_4.sql.gz',
  '/test/tmp/file_6.sql.gz',
);

echo "<pre>";
sort($files);
print_r($files);

当使用sort()时，它会给出如下输出

Array
(
    [0] => /test/tmp/file_1.sql.gz
    [1] => /test/tmp/file_10.sql.gz
    [2] => /test/tmp/file_11.sql.gz
    [3] => /test/tmp/file_12.sql.gz
    [4] => /test/tmp/file_13.sql.gz
    [5] => /test/tmp/file_2.sql.gz
    [6] => /test/tmp/file_3.sql.gz
    [7] => /test/tmp/file_4.sql.gz
    [8] => /test/tmp/file_5.sql.gz
    [9] => /test/tmp/file_6.sql.gz
    [10] => /test/tmp/file_7.sql.gz
    [11] => /test/tmp/file_8.sql
    [12] => /test/tmp/file_9.sql.gz
)

但我想要这样

Array
(
    [0] => /test/tmp/file_1.sql.gz
    [1] => /test/tmp/file_2.sql.gz
    [2] => /test/tmp/file_3.sql.gz
    [3] => /test/tmp/file_4.sql.gz
    [4] => /test/tmp/file_5.sql.gz
    [5] => /test/tmp/file_6.sql.gz
    [6] => /test/tmp/file_7.sql.gz
    [7] => /test/tmp/file_8.sql
    [8] => /test/tmp/file_9.sql.gz
    [9] => /test/tmp/file_10.sql.gz
    [10] => /test/tmp/file_11.sql.gz
    [11] => /test/tmp/file_12.sql.gz
    [12] => /test/tmp/file_13.sql.gz
)

Answer 1

您必须使用自然顺序算法:natsort() :

natsort($files);

并使用array_values()重置索引。例如:

natsort($files);
$files = array_values($files);
echo "<pre>";
print_r($files);