PHP Array 在同一个键上合并两个数组
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PHP Array Merge two Arrays on same key
提问by Matthew Colley
I am trying to merge the following two arrays into one array, sharing the same key:
我正在尝试将以下两个数组合并为一个数组，共享相同的密钥：
First Array:
第一个数组：
array(3) {
[0]=>
array(1) {
["Camera1"]=>
string(14) "192.168.101.71"
}
[1]=>
array(1) {
["Camera2"]=>
string(14) "192.168.101.72"
}
[2]=>
array(1) {
["Camera3"]=>
string(14) "192.168.101.74"
}
}
Second Array:
第二个数组：
array(3) {
[0]=>
array(1) {
["Camera1"]=>
string(2) "VT"
}
[1]=>
array(1) {
["Camera2"]=>
string(2) "UB"
}
[2]=>
array(1) {
["Camera3"]=>
string(2) "FX"
}
}
As you can see, they share the same key (Camera1, Camera2, Camera3, etc..)
如您所见，它们共享相同的密钥（Camera1、Camera2、Camera3 等）。
Here is what I have tried:
这是我尝试过的：
$Testvar = array_merge($NewArrayCam,$IpAddressArray);
foreach ($Testvar AS $Newvals){
$cam = array();
foreach($Newvals AS $K => $V){
$cam[] = array($K => $V);
}
回答by DrBeza
Ideally I would look to format the two arrays in such a way that array_merge_recursivewould simply merge the arrays without too much fuss.
理想情况下，我希望以这样一种方式格式化两个数组，即array_merge_recursive简单地合并数组而不必大惊小怪。
However I did come up with a solution that used array_map.
但是我确实想出了一个使用array_map.
$array1 = array(
array("Camera1" => "192.168.101.71"),
array("Camera2" => "192.168.101.72"),
array("Camera3" => "192.168.101.74"),
);
$array2 = array(
array("Camera1" => "VT"),
array("Camera2" => "UB"),
array("Camera3" => "FX")
);
$results = array();
array_map(function($a, $b) use (&$results) {
$key = current(array_keys($a));
$a[$key] = array('ip' => $a[$key]);
// Obtain the key again as the second array may have a different key.
$key = current(array_keys($b));
$b[$key] = array('name' => $b[$key]);
$results += array_merge_recursive($a, $b);
}, $array1, $array2);
var_dump($results);
The output is:
输出是：
array (size=3)
'Camera1' =>
array (size=2)
'ip' => string '192.168.101.71' (length=14)
'name' => string 'VT' (length=2)
'Camera2' =>
array (size=2)
'ip' => string '192.168.101.72' (length=14)
'name' => string 'UB' (length=2)
'Camera3' =>
array (size=2)
'ip' => string '192.168.101.74' (length=14)
'name' => string 'FX' (length=2)
回答by Peter Krejci
Try to use array_merge_recursive.
回答by Prasanth Bendra
Use array_merge_recursive :
使用 array_merge_recursive ：
Convert all numeric key to strings, (make is associative array)
将所有数字键转换为字符串，（make 是关联数组）
$result = array_merge_recursive($ar1, $ar2);
print_r($result);
回答by Volodymyr Klyuka
For your nesting level will be enough this:
对于您的嵌套级别就足够了：
$sumArray = array_map(function ($a1, $b1) { return $a1 + $b1; }, $array1, $array2);
$sumArray = array_map(function ($a1, $b1) { return $a1 + $b1; }, $array1, $array2);
For deeper nesting it wont work.
对于更深的嵌套，它不起作用。
回答by phvish
this would be one of the soluion:
function array_merge_custom($array1,$array2) {
$mergeArray = [];
$array1Keys = array_keys($array1);
$array2Keys = array_keys($array2);
$keys = array_merge($array1Keys,$array2Keys);
foreach($keys as $key) {
$mergeArray[$key] = array_merge_recursive(isset($array1[$key])?$array1[$key]:[],isset($array2[$key])?$array2[$key]:[]);
}
return $mergeArray;
}
$array1 = array(
array("Camera1" => "192.168.101.71"),
array("Camera2" => "192.168.101.72"),
array("Camera3" => "192.168.101.74"),
);
$array2 = array(
array("Camera1" => "VT"),
array("Camera2" => "UB"),
array("Camera3" => "FX")
);
echo '<pre>';
print_r(array_merge_custom($array1 , $array2));
回答by Emil Orol
If both arrays have the same numbers of levels and keys this should work:
如果两个数组具有相同数量的级别和键，这应该可以工作：
$array3 = array();
foreach ($array1 as $key1 => $value1) {
// store IP
$array3['Camera'.$key1]['IP'] = $value['Camera'.$key1];
// store type of cam
$array3['Camera'.$key1]['Type'] = $array2[$key]['Camera'.$key1];
}
At the end $array3 should be something like:
最后 $array3 应该是这样的：
$array3 = array {
["Camera1"] => {['IP'] => "192.168.101.71", ['Type'] => "VT" }
["Camera2"] => {['IP'] => "192.168.101.72", ['Type'] => "UB" }
["Camera3"] => {['IP'] => "192.168.101.74", ['Type'] => "FX" }
}
回答by HamZa
Something like this should work:
这样的事情应该工作：
$array1 = array(array("Camera1" => "192.168.101.71"), array("Camera2" => "192.168.101.72"), array("Camera3" => "192.168.101.74"));
$array2 = array(array("Camera1" => "VT"), array("Camera2" => "UB"), array("Camera3" => "FX"));
$results = array();
foreach($array1 as $key => $array){
foreach($array as $camera => $value){
$results[$camera]['ip'] = $value;
}
}
foreach($array2 as $key => $array){
foreach($array as $camera => $value){
$results[$camera]['name'] = $value;
}
}
print_r($results);
回答by Sverri M. Olsen
The main problem are the arrays. Because of the way they are structured it becomes unnecessarily complicated to merge them. It they simply were normal associative arrays (i.e. array('Camera1' => 'VT')then it would be effortless to merge them.
主要问题是数组。由于它们的结构方式，合并它们变得不必要地复杂。如果它们只是普通的关联数组（即array('Camera1' => 'VT')，合并它们将很容易。
I would suggest that you figure out how to format the data in such a way as to make it easier to work with.
我建议您弄清楚如何以更易于使用的方式格式化数据。
This is a quick and dirty way of merging the two arrays. It takes one "camera" from one array, and then tries to find the corresponding "camera" in the other array. The function only uses the "cameras" in the $ipsarray, and only uses matching CameraNkeys.
这是合并两个数组的一种快速而肮脏的方法。它从一个数组中取出一个“相机”，然后尝试在另一个数组中找到相应的“相机”。该函数只使用$ips数组中的“相机” ，并且只使用匹配的CameraN键。
$ips = array(
array('Camera1' => '192.168.101.71'),
array('Camera2' => '192.168.101.72'),
array('Camera3' => '192.168.101.74'),
);
$names = array(
array('Camera1' => 'VT'),
array('Camera2' => 'UB'),
array('Camera3' => 'FX'),
);
function combineCameras($ips, $names) {
$output = array();
while ($ip = array_shift($ips)) {
$ident = key($ip);
foreach ($names as $key => $name) {
if (key($name) === $ident) {
$output[$ident] = array(
'name' => array_shift($name),
'ip' => array_shift($ip),
);
unset($names[$key]);
}
}
}
return $output;
}
var_dump(combineCameras($ips, $names));
回答by Erik Ieger Dobrychtop
This worked for me. I joined two arrays with the same keys
这对我有用。我用相同的键加入了两个数组
$array1 = ArrayUtils::merge($array1, $array2);
If you need preserve NumericKey, use
如果您需要保留 NumericKey，请使用
$array1 = ArrayUtils::merge($array1, $array2, true);
