我有多个这样的数组：
array (
[floorBuildingName] => Array
(
[0] => Lt.1
[1] => Lt.2
)
[roomFloorName] => Array
(
[0] => Single
[1] => Medium1
[2] => MaXI
)
)
我想将两个数组合并为一个数组。
例如：
array (
[0] => array(
[0] =>Lt.1,
[1] =>Single
),
[1] => array(
[0] =>Lt.2,
[1] =>Medium1
),
[2] => array(
[0] =>Lt.2,
[1] =>MaXI
)
)
我怎样才能做到这一点？
首先，您必须确定最大数组长度。然后，创建一个新数组，最后，将给定索引处的元素放入新数组中。如果索引超出范围，则使用最后一个元素。
var $maxNumber = 0;
foreach ($myArray as $array) {
$maxNumber = max($maxNumber, count($array));
}
$result = array();
for ($index = 0; $index < $maxNumber; $index++) {
$result[] = array();
foreach($myArray as $array) {
if (count($array) < $maxNumber) {
$result[$index][] = $array(count($array) - 1);
} else {
$result[$index][] = $array[$index];
}
}
}
假设你想用数组中的最后一个值填充不均匀的数组：
$data = ['floorBuildingName' => [..], ..];
// find the longest inner array
$max = max(array_map('count', $data));
// pad all arrays to the longest length
$data = array_map(function ($array) use ($max) {
return array_pad($array, $max, end($array));
}, $data);
// merge them
$merged = array_map(null, $data['floorBuildingName'], $data['roomFloorName']);
您可以使用array_map非常轻松地执行此操作：
试试这个代码：
$arr1 = array(1, 2);
$arr2 = array('one', 'two', 'three', 'four');
while(count($arr1) != count($arr2)) {
//If Array1 is Shorter then Array2
if (count($arr1)<count($arr2)) {
$arr1[] = $arr1[count($arr1) - 1];
}
//If Array2 is Shorter then Array1
if (count($arr1) > count($arr2)) {
$arr2[] = $arr2[count($arr2) - 1];
}
}
//Now merge arrays
$newarray = (array_map(null, $arr1, $arr2));
print_r($newarray);
将输出：
Array
(
[0] => Array
(
[0] => 1
[1] => one
)
[1] => Array
(
[0] => 2
[1] => two
)
[2] => Array
(
[0] => 2
[1] => three
)
[3] => Array
(
[0] => 2
[1] => four
)
)
有
不同数量的参数的解决方案：
$floorBuildingName = array(
'Lt.1',
'Lt.2'
);
$roomFloorName = array(
'Single', 'Medium1', 'MaXI'
);
class ValueArrayIterator extends ArrayIterator
{
protected $arrays;
protected $latestValues = [];
public function __construct(array $mainArray) {
parent::__construct($mainArray);
$this->arrays = func_get_args();
}
public function current()
{
$returnValue = [];
foreach ($this->arrays as $arrayKey => $array) {
if (isset($array[$this->key()])) {
$this->latestValues[$arrayKey] = $array[$this->key()];
}
$returnValue[] = $this->latestValues[$arrayKey];
}
return $returnValue;
}
}
$iterator = new ValueArrayIterator($roomFloorName, $floorBuildingName);
$newArray = iterator_to_array($iterator);