Question

因此，我想采用一个“未排序”数组，并从“未排序”数组中取出第二个元素，然后将其放入新数组，所以剩下的就是两个数组。

$unsorted = array("present","Bob","late","Jessie","late","Carl","present","Jessica","absent","Adam","present","Hope");

我曾考虑创建一个for循环，但是找不到任何函数来创建两个数组。

任何帮助将不胜感激，谢谢！

Answer 1

一种选择是使用经典的foreach循环。

$unsorted = array("present","Bob","late","Jessie","late","Carl","present","Jessica","absent","Adam","present","Hope");

$array1 = array();
$array2 = array();
foreach( $unsorted as $key => $val ) {
    if ( $key % 2 ) $array2[] = $val;
    else $array1[] =  $val;
}

$array1将导致：

Array
(
    [0] => present
    [1] => late
    [2] => late
    [3] => present
    [4] => absent
    [5] => present
)

$array2将导致：

Array
(
    [0] => Bob
    [1] => Jessie
    [2] => Carl
    [3] => Jessica
    [4] => Adam
    [5] => Hope
)

Answer 2

简单，但需要一些理解：

$unsorted = array("present","Bob","late","Jessie","late","Carl","present","Jessica","absent","Adam","present","Hope");
$sorted = array_map(null, ...array_chunk($unsorted, 2));
print_r($sorted);

分解数组，以便每个第二个元素位于不同的数组中

2 个答案: