我正在尝试将四个数组合并为一个,同时保留整个数组的索引号。
示例数组:
$codes = array('US', 'GB', 'AE');
$names = array('United States', 'United Kingdom', 'United Arab Emirates');
$population = array('307,212,123', '61,113,205', '4,798,491');
$area = array('9,826,675', '243,610', '83,600');
我希望有一个可以这样使用的功能:
如果可能,还支持更多数组,如第5等......
$country = combineArray($codes, $names, $population, $area);
结果通缉:
[country] => Array
(
[0] => Array
(
[0] => US
[1] => United States
[2] => 307,212,123
[3] => 9,826,675
)
[1] => Array
(
[0] => GB
[1] => United Kingdom
[2] => 61,113,205
[3] => 243,610
)
[2] => Array
(
[0] => AE
[1] => United Arab Emirates
[2] => 4,798,491
[3] => 83,600
)
)
非常感谢你们所有的帮助^ _ ^
答案 0 :(得分:0)
通常,数组ID的重置是由array_merge PHP函数引起的,而不是使用那个尝试简单地“添加”数组来形成你的合并数组,这里有一个例子,它应该有助于对正在发生的事情有所了解。
所以我们从两个小而简单的数组开始,索引设置为默认值(0)以外的其他数据。
$array1 = array(1 => 'one');
$array2 = array(3 => 'three');
使用'普通'array_merge会做类似这样的事情,因为你可以看到两个数组ID都被重置为0和1,而合并前它们分别是1和3。
$mergedArray = array_merge($array1, $array2);
// $mergedArray = array(0 => 'one', 1 => 'three');
但是,当您将两个数组添加到一起时,您的索引ID将保持不变:
$mergedArray = $array1 + $array2; // will keep the index ID's intact
// $mergedArray = array(1 => 'one', 3 => 'three');
答案 1 :(得分:0)
我使用这个自定义功能。感谢Trey在“array combine three or more arrays with php”处的原始功能。您可以使用此功能添加任意数量的数组。
功能#1:
function arrayMerge() {
$args = func_get_args();
$idx1 = range(1, count($args[1]));
$idx2 = range(1, count($args[2]));
foreach($args as $key => $array) {
$vkey = array_shift($idx2);
foreach($array as $akey => $val) {
$result[$idx1[$akey]][$vkey] = $val;
} #foreach
} #foreach
return $result;
} #arrayMerge
使用的示例数组:
$codes = array('US', 'GB', 'AE');
$names = array('United States', 'United Kingdom', 'United Arab Emirates');
$population = array('307,212,123', '61,113,205', '4,798,491');
$area = array('9,826,675', '243,610', '83,600');
功能用途:
print_r( arrayMerge($codes, $names, $population, $area) );
我添加了两个自动数字索引,并从1个0开始。
示例数组输出:
Array
(
[1] => Array
(
[1] => US
[2] => United States
[3] => 307,212,123
[4] => 9,826,675
)
[2] => Array
(
[1] => GB
[2] => United Kingdom
[3] => 61,113,205
[4] => 243,610
)
[3] => Array
(
[1] => AE
[2] => United Arab Emirates
[3] => 4,798,491
[4] => 83,600
)
)
这是另外一个使用自定义子键,在这一个我添加了一个自动名称索引并从1而不是0开始。
功能#2:
function arrayMerge2() {
$args = func_get_args();
$idx = range(1, count($args[1]));
$keys = array_shift($args);
foreach($args as $key => $array) {
$vkey = array_shift($keys);
foreach($array as $akey => $val) {
$result[$idx[$akey]][$vkey] = $val;
} #foreach
} #foreach
return $result;
} #arrayMerge2
使用的示例数组:
$codes = array('US', 'GB', 'AE');
$names = array('United States', 'United Kingdom', 'United Arab Emirates');
$population = array('307,212,123', '61,113,205', '4,798,491');
$area = array('9,826,675', '243,610', '83,600');
$keys = array('code', 'name', 'popu', 'area');
功能用途:
print_r( arrayMerge2($keys, $codes, $names, $population, $area) );
示例数组输出:
Array
(
[1] => Array
(
[code] => US
[name] => United States
[popu] => 307,212,123
[area] => 9,826,675
)
[2] => Array
(
[code] => GB
[name] => United Kingdom
[popu] => 61,113,205
[area] => 243,610
)
[3] => Array
(
[code] => AE
[name] => United Arab Emirates
[popu] => 4,798,491
[area] => 83,600
)
)
哦,是的,这个函数也支持数组中的空值: - )
我希望这可以帮助其他需要simular数组配置的人。
答案 2 :(得分:0)
这将为您提供所需的准确输出。希望它对你有用。
<?php
$codes = array('US', 'GB', 'AE');
$names = array('United States', 'United Kingdom', 'United Arab Emirates');
$population = array('307,212,123', '61,113,205', '4,798,491');
$area = array('9,826,675', '243,610', '83,600');
$country = array();
$size= sizeof($codes); //This will work only if all array size are same.
for($i=0;$i<$size;$i++)
{
$country[$i][]=$codes[$i];
$country[$i][]=$names[$i];
$country[$i][]=$population[$i];
$country[$i][]=$area[$i];
}
echo "<pre>";
print_r($country);