数组排序键在数字上有帮助

Question

$test1[2] = "one";

$test2[1] = "two";
$test2[3] = "three";

$test = $test1 + $test2;

print_r($test);

我已经使用了数组联合运算符,但是当我打印数组时,它的顺序错误.

Array ( [2] => one [1] => two [3] => three )

如何在数组中以数字方式对键进行排序？所以我得到以下结果.

Array ( [1] => two [2] => one [3] => three )

Answer 1

print_r($test);
ksort($test);  // (sorts in place)
print_r($test);

Answer 2

有多种选择，具体取决于您追求的结果。最简单的是ksort：

$test1[2] = "one";

$test2[1] = "two";
$test2[3] = "three";

$test = $test1 + $test2;
ksort($test);
print_r($test);