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This question already has answers here:
Is there a function to extract a 'column' from an array in PHP?
(15 answers)
Closed last month.
I have an array which is multidimensional for no reason
/* This is how my array is currently */
Array
(
[0] => Array
(
[0] => Array
(
[plan] => basic
)
[1] => Array
(
[plan] => small
)
[2] => Array
(
[plan] => novice
)
[3] => Array
(
[plan] => professional
)
[4] => Array
(
[plan] => master
)
[5] => Array
(
[plan] => promo
)
[6] => Array
(
[plan] => newplan
)
)
)
I want to convert this array into this form
/*Now, I want to simply it down to this*/
Array (
[0] => basic
[1] => small
[2] => novice
[3] => professional
[4] => master
[5] => promo
[6] => newplan
)
Any idea how to do this?
This single line would do that:
$array = array_column($array, 'plan');
The first argument is an array | The second argument is an array key.
For details, go to official documentation: https://www.php.net/manual/en/function.array-column.php.
Assuming this array may or may not be redundantly nested and you're unsure of how deep it goes, this should flatten it for you:
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, array_flatten($value));
}
else {
$result[$key] = $value;
}
}
return $result;
}
If you come across a multidimensional array that is pure data, like this one below, then you can use a single call to array_merge() to do the job via reflection:
$arrayMult = [ ['a','b'] , ['c', 'd'] ];
$arraySingle = call_user_func_array('array_merge', $arrayMult);
// $arraySingle is now = ['a','b', 'c', 'd'];
Just assign it to it's own first element:
$array = $array[0];
For this particular case, this'll do:
$array = array_map('current', $array[0]);
It's basically the exact same question is this one, look at some answers there: PHP array merge from unknown number of parameters.
$singleArray = array();
foreach ($multiDimensionalArray as $key => $value){
$singleArray[$key] = $value['plan'];
}
this is best way to create a array from multiDimensionalArray array.
thanks
Problem array:
array:2 [▼
0 => array:3 [▼
0 => array:4 [▼
"id" => 8
"name" => "Veggie Burger"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 9
"name" => "Veggie Pitta"
"image" => ""
"Category_type" => "product"
]
2 => array:4 [▼
"id" => 10
"name" => "Veggie Wrap"
"image" => ""
"Category_type" => "product"
]
]
1 => array:2 [▼
0 => array:4 [▼
"id" => 18
"name" => "Cans 330ml"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 19
"name" => "Bottles 1.5 Ltr"
"image" => ""
"Category_type" => "product"
]
]
]
Solution array:
array:5 [▼
0 => array:4 [▼
"id" => 8
"name" => "Veggie Burger"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 9
"name" => "Veggie Pitta"
"image" => ""
"Category_type" => "product"
]
2 => array:4 [▼
"id" => 10
"name" => "Veggie Wrap"
"image" => ""
"Category_type" => "product"
]
3 => array:4 [▼
"id" => 18
"name" => "Cans 330ml"
"image" => ""
"Category_type" => "product"
]
4 => array:4 [▼
"id" => 19
"name" => "Bottles 1.5 Ltr"
"image" => ""
"Category_type" => "product"
]
]
Write this code and get your solution , $subcate is your multi dimensional array.
$singleArrayForCategory = array_reduce($subcate, 'array_merge', array());
none of answers helped me, in case when I had several levels of nested arrays. the solution is almost same as #AlienWebguy already did, but with tiny difference.
function nestedToSingle(array $array)
{
$singleDimArray = [];
foreach ($array as $item) {
if (is_array($item)) {
$singleDimArray = array_merge($singleDimArray, nestedToSingle($item));
} else {
$singleDimArray[] = $item;
}
}
return $singleDimArray;
}
test example
$array = [
'first',
'second',
[
'third',
'fourth',
],
'fifth',
[
'sixth',
[
'seventh',
'eighth',
[
'ninth',
[
[
'tenth'
]
]
],
'eleventh'
]
],
'twelfth'
];
$array = nestedToSingle($array);
print_r($array);
//output
array:12 [
0 => "first"
1 => "second"
2 => "third"
3 => "fourth"
4 => "fifth"
5 => "sixth"
6 => "seventh"
7 => "eighth"
8 => "ninth"
9 => "tenth"
10 => "eleventh"
11 => "twelfth"
]
You can do it just using a loop.
$singleArray = array();
foreach ($multiDimensionalArray as $key => $value){
$singleArray[$key] = $value['plan'];
}
Your sample array has 3 levels. Because the first level has only [0], you can hardcode your access into it and avoid an extra function/construct call.
(Code Demos)
array_walk_recursive() is handy and versatile, but for this task may be overkill and certainly a bit more convoluted in terms of readability.
array_walk_recursive($array, function($leafvalue)use(&$flat){$flat[] = $leafvalue;});
var_export($flat);
If this was my code, I'd be using array_column() because it is direct and speaks literally about the action being performed.
var_export(array_column($array[0], 'plan'));
Of course a couple of `foreach() loops will perform very efficiently because language constructs generally perform more efficiently than function calls.
foreach ($array[0] as $plans) {
foreach ($plans as $value) {
$flat[] = $value;
}
}
var_export($flat);
Finally, as a funky alternative (which I can't imagine actually putting to use unless I was writing code for someone whom I didn't care for) I'll offer an array_merge_recursive() call with a splat operator (...).
var_export(array_merge_recursive(...$array[0])['plan']);
Despite that array_column will work nice here, in case you need to flatten any array no matter of it's internal structure you can use this array library to achieve it without ease:
$flattened = Arr::flatten($array);
which will produce exactly the array you want.
This simple code you can use
$array = array_column($array, 'value', 'key');
Recently I've been using AlienWebguy's array_flatten function but it gave me a problem that was very hard to find the cause of.
array_merge causes problems, and this isn't the first time that I've made problems with it either. If you have the same array keys in one inner array that you do in another, then the later values will overwrite the previous ones in the merged array.
Here's a different version of array_flatten without using array_merge:
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$arrayList=array_flatten($value);
foreach ($arrayList as $listItem) {
$result[] = $listItem;
}
}
else {
$result[$key] = $value;
}
}
return $result;
}
There is an error in most voted answer. Here is the correct version.
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, array_flatten($value));
}
else {
$result[] = $value;
}
}
return $result;
}
The difference is on the line $result[] = $value;
Original answer was $result[$key] = $value;
The $key index is incorrect after flattering any array in the cycle.
Following this pattern
$input = array(10, 20, array(30, 40), array('key1' => '50', 'key2'=>array(60), 70));
Call the function :
echo "<pre>";print_r(flatten_array($input, $output=null));
Function Declaration :
function flatten_array($input, $output=null) {
if($input == null) return null;
if($output == null) $output = array();
foreach($input as $value) {
if(is_array($value)) {
$output = flatten_array($value, $output);
} else {
array_push($output, $value);
}
}
return $output;
}
I've written a complement to the accepted answer. In case someone, like myself need a prefixed version of the keys, this can be helpful.
Array
(
[root] => Array
(
[url] => http://localhost/misc/markia
)
)
Array
(
[root.url] => http://localhost/misc/markia
)
<?php
function flattenOptions($array, $old = '') {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, flattenOptions($value, $key));
}
else {
$result[$old . '.' . $key] = $value;
}
}
return $result;
}
I had come across the same requirement to flatter multidimensional array into single dimensional array than search value using text in key. here is my code
$data = '{
"json_data": [{
"downtime": true,
"pfix": {
"max": 100,
"threshold": 880
},
"ints": {
"int": [{
"rle": "pri",
"device": "laptop",
"int": "Ether3",
"ip": "127.0.0.3"
}],
"eth": {
"lan": 57
}
}
},
{
"downtime": false,
"lsi": "987654",
"pfix": {
"min": 10000,
"threshold": 890
},
"mana": {
"mode": "NONE"
},
"ints": {
"int": [{
"rle": "sre",
"device": "desk",
"int": "Ten",
"ip": "1.1.1.1",
"UF": true
}],
"ethernet": {
"lan": 2
}
}
}
]
}
';
$data = json_decode($data,true);
$stack = &$data;
$separator = '.';
$toc = array();
while ($stack) {
list($key, $value) = each($stack);
unset($stack[$key]);
if (is_array($value)) {
$build = array($key => ''); # numbering without a title.
foreach ($value as $subKey => $node)
$build[$key . $separator . $subKey] = $node;
$stack = $build + $stack;
continue;
}
if(!is_numeric($key)){
$toc[$key] = $value;
}
}
echo '<pre/>';
print_r($toc);
My output:
Array
(
[json_data] =>
[json_data.0] =>
[json_data.0.downtime] => 1
[json_data.0.pfix] =>
[json_data.0.pfix.max] => 100
[json_data.0.pfix.threshold] => 880
[json_data.0.ints] =>
[json_data.0.ints.int] =>
[json_data.0.ints.int.0] =>
[json_data.0.ints.int.0.rle] => pri
[json_data.0.ints.int.0.device] => laptop
[json_data.0.ints.int.0.int] => Ether3
[json_data.0.ints.int.0.ip] => 127.0.0.3
[json_data.0.ints.eth] =>
[json_data.0.ints.eth.lan] => 57
[json_data.1] =>
[json_data.1.downtime] =>
[json_data.1.lsi] => 987654
[json_data.1.pfix] =>
[json_data.1.pfix.min] => 10000
[json_data.1.pfix.threshold] => 890
[json_data.1.mana] =>
[json_data.1.mana.mode] => NONE
[json_data.1.ints] =>
[json_data.1.ints.int] =>
[json_data.1.ints.int.0] =>
[json_data.1.ints.int.0.rle] => sre
[json_data.1.ints.int.0.device] => desk
[json_data.1.ints.int.0.int] => Ten
[json_data.1.ints.int.0.ip] => 1.1.1.1
[json_data.1.ints.int.0.UF] => 1
[json_data.1.ints.ethernet] =>
[json_data.1.ints.ethernet.lan] => 2
)
This is my contribuition
function arrayUnica($array, $prefix = "")
{
if (!is_array($array)) {
return false;
}
$new_array = [];
foreach ($array as $key => $value) {
if (is_array($value)) {
$key = is_int($key) ? $prefix . $key . "-" : $key . "_";
$new_array = array_merge($new_array, arrayUnica($value, $key));
} else {
$new_array[$prefix . $key] = $value;
}
}
return $new_array;
}
Hope this will helpful for you,
$array= 'YOUR_MULTIDIMENSIONAL_ARRAY';
$arr=[];
array_walk_recursive($array, function($k){global $arr; $arr[]=$k;});
print_r($arr);
I have done this with OOP style
$res=[1=>[2,3,7,8,19],3=>[4,12],2=>[5,9],5=>6,7=>[10,13],10=>[11,18],8=>[14,20],12=>15,6=>[16,17]];
class MultiToSingle{
public $result=[];
public function __construct($array){
if(!is_array($array)){
echo "Give a array";
}
foreach($array as $key => $value){
if(is_array($value)){
for($i=0;$i<count($value);$i++){
$this->result[]=$value[$i];
}
}else{
$this->result[]=$value;
}
}
}
}
$obj= new MultiToSingle($res);
$array=$obj->result;
print_r($array);
Multi dimensional array to single array with one line code !!!
Enjoy the code.
$array=[1=>[2,5=>[4,2],[7,8=>[3,6]],5],4];
$arr=[];
array_walk_recursive($array, function($k){global $arr; $arr[]=$k;});
print_r($arr);
...Enjoy the code.
Try this it works for me:
$newArray = array();
foreach($operator_call_logs as $array) {
foreach($array as $k=>$v) {
$newArray[$k] = $v;
}
}
Save this as a php file, simply import and use single_array() function
<?php
$GLOBALS['single_array']=[];
function array_conveter($array_list){
if(is_array($array_list)){
foreach($array_list as $array_ele){
if(is_array($array_ele)){
array_conveter($array_ele);
}else{
array_push($GLOBALS['single_array'],$array_ele);
}
}
}else{
array_push($GLOBALS['single_array'],$array_list);
}
}
function single_array($mix){
foreach($mix as $single){
array_conveter($single);
}return $GLOBALS['single_array'];
$GLOBALS['single_array']=[];
}
/* Example convert your multi array to single */
$mix_array=[3,4,5,[4,6,6,7],'abc'];
print_r(single_array($mix_array));
?>
if use php version 7.4 and above
$users = [
[
'Ahmed',
'Mohammed',
],
[
'Saeed',
'Rami',
'Haider',
],
];
$admin = array_merge(...$users);
I have 3 objects and I want them to combine into 1 array. There are duplicate property names in objects, but I want them too (with renames property name). How can I do that?
$object1 = {
"id": "10",
"unit_number": "12565"
},
$object2 = {
"id": "20",
"full_name": "Lorem Ipsm"
},
$object3 = {
"id": "30",
"phone": "123456789"
}
I want the output like,
array = (
"id1" => "10",
"unit_number" => "12565",
"id2" => "20",
"full_name" => "Lorem Ipsm",
"id3" => "30",
"phone" => "123456789"
);
I have tried to assign them to one array like,
$arr = array();
$arr['obj1'] = $object1;
$arr['obj2'] = $object2;
$arr['obj3'] = $object3;
Now I thought of doing a foreach, but I am stuck. My actual object is too big. So there are many duplicates. Not just this one.
I think you can achieve this using below code,
$object1 = (object) ['id' => '10', "unit_number"=> "12565", "name" => 'Test name'];
$object2 = (object) ['id' => '20', "full_name"=> "Lorem Ipsm"];
$object3 = (object) ['id' => '30', "phone"=> "123456789", "name" => "test name 1"];
$array1 = (array) $object1;
$array2 = (array) $object2;
$array3 = (array) $object3;
function array_merge_dup_keys() {
$arrays = func_get_args();
$data = array();
foreach ($arrays as $a) {
foreach ($a as $k => $v) {
$key1 = check_key_exists($k,$data);
$data[$key1] = $v;
}
}
return $data;
}
function check_key_exists($key,$array,$loop_count=1)
{
if(array_key_exists ( $key , $array ))
{
$val = explode('_',$key);
$count = isset($val[1]) ? $val[1] : $loop_count;
$start_key = isset($val[0]) ? $val[0] : $key;
$key = $start_key.'_'.$loop_count;
$key = check_key_exists($key,$array,$count+1);
}
return $key;
}
$data = array_merge_dup_keys($array1 ,$array2,$array3);
The output ($data) of above code will be,
Array
(
[id] => 10
[unit_number] => 12565
[name] => Test name
[id_1] => 20
[full_name] => Lorem Ipsm
[id_2] => 30
[phone] => 123456789
[name_1] => test name 1
)
Maybe something like this? (untested, possible typos/syntax errors...)
// this looks like json, not PHP
// "object1": {
// "id": "10",
// "unit_number": "12565"
// },
// "object2": {
// "id": "20",
// "full_name": "Lorem Ipsm"
// },
// "object3": {
// "id": "30",
// "phone": "123456789"
// }
// here is a php array for that data
$objArray = array(
"object1" => array( "id"=>"10", "unit_number"=>"12565"),
"object2" => array( "id"=>"20", "full_name"=>"Lorem Ipsm"),
"object3" => array( "id"=>"30", "phone"=>"123456789")
);
$newArray = array();
foreach( $objArray as $key=>$value)
{
// the the id "append"
$idAppend = substr($key, strlen("object"));
foreach($value as $subkey=>$subvalue)
{
$newkey = $subkey;
if ( strcmp($subkey, "id") == 0 ) // it is the id string
{
$newkey = $subkey.$idAppend;
}
$newArray[$newkey] = $subvalue;
}
}
I am creating an associative array from a json code so that i can use in my curl code that connects to an API. Now it seems like the associative array outputted is incorrect. I would like to format it correctly, but now I get message an error saying the array is incorrect.
The json code:
{
"payment": [
{
"clientCorrelator": "54321",
"endUserId": "tel:+16309700001",
"merchantCode": "01234",
"merchantPin": "1234",
"merchantNumber": "tel:+16309700001",
"notifyURL": "http://example.com/notifyURL",
"paymentAmount": {
"chargingInformation": [
{
"amount": "10",
"currency": "USD",
"description": "AlienInvadersGame"
}
],
"chargingMetaData": [
{
"onBehalfOf": "Example Games Inc",
"purchaseCategoryCode": "Game",
"channel": "WAP",
"taxAmount": "0"
}
],
"referenceCode": "REF-12345",
"transactionOperationStatus": "Charged"
}
}
]
}
The php code to build the array:
jasondata = file_get_contents("payment.json");
$json = json_decode($jasondata, true);
$payment = ($json['payment']) ;
print_r($payment);
The output:
Array ( [0] => Array ( [clientCorrelator] => 54321 [endUserId] => tel:+16309700001 [merchantCode] => 01234 [merchantPin] => 1234 [merchantNumber] => tel:+16309700001 [notifyURL] => http://example.com/notifyURL [paymentAmount] => Array ( [chargingInformation] => Array ( [0] => Array ( [amount] => 10 [currency] => USD [description] => AlienInvadersGame ) ) [chargingMetaData] => Array ( [0] => Array ( [onBehalfOf] => Example Games Inc [purchaseCategoryCode] => Game [channel] => WAP [taxAmount] => 0 ) ) [referenceCode] => REF-12345 [transactionOperationStatus] => Charged ) ) )
My main goal is to remove the [0] indexes without messing up the array. please assist
instead of $payment = ($json['payment']);
change that to $payment = reset($json['payment']);
However if there are multiple entries under payment, then you should just loop over them like:
foreach($json['payment'] as $payment){
print_r($payment);
}
The loop also would work if there was any number of elements under payment, so not just multiple.
more or less safe function
$payment = json_decode($str, true);
function RemoveZeroIndex(&$arr) {
foreach($arr as $key => &$item) { // walk array
if (is_array($item) && // if array
(count($item) === 1) && // with one item
isset($item[0])) // and numeric index
$item = $item[0]; // shift it
if (is_array($item))
RemoveZeroIndex($item); // call recursively
}
}
RemoveZeroIndex($payment);
print_r($payment);
In addition to Jonathan Khun.
For your nested arrays you just do the same. Reset the internal pointer of that array.
<?php
$jasondata = '{
"payment": [
{
"clientCorrelator": "54321",
"endUserId": "tel:+16309700001",
"merchantCode": "01234",
"merchantPin": "1234",
"merchantNumber": "tel:+16309700001",
"notifyURL": "http://example.com/notifyURL",
"paymentAmount": {
"chargingInformation": [
{
"amount": "10",
"currency": "USD",
"description": "AlienInvadersGame"
}
],
"chargingMetaData": [
{
"onBehalfOf": "Example Games Inc",
"purchaseCategoryCode": "Game",
"channel": "WAP",
"taxAmount": "0"
}
],
"referenceCode": "REF-12345",
"transactionOperationStatus": "Charged"
}
}
]
}';
$json = json_decode($jasondata, true);
$payment = reset($json['payment']);
$payment['paymentAmount']['chargingInformation'] = reset($payment['paymentAmount']['chargingInformation']);
$payment['paymentAmount']['chargingMetaData'] = reset($payment['paymentAmount']['chargingMetaData']);
echo "<pre>";
print_r($payment);
?>
I have a array like this:
Array
(
[0] => Chat Show
[1] => Non-fiction
[2] => Inspirational
)
And i am trying to get this format:
"genres": [
{
"name": "Chat Show"
},
{
"name": "Non-fiction"
},
{
"name": "Inspirational"
}
]
but i get something like this:
genres": [
"Chat Show",
"Non-fiction",
"Inspirational"
]
This is what i am doing:
while($row = mysqli_fetch_array($Data))
{
$Genres = explode('/', filter_var(rtrim($row['genres'], '/'), FILTER_SANITIZE_URL));
}
and then this is part of a bigger array
"genres" => $Genres
print_r(
json_encode(["genres" => array_map(
function($v) { return ['name' => $v]; },
$Genres)]));
result
{"genres":[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Inspirational"}]}
For example, here is your array in PHP
$var = array(
"Chat Show",
"Non-fiction" ,
"Inspirational"
);
Without a key "name". You should create a new array and push each element as an array to your new array.
$result = array();
foreach($var as $name)
{
$arr = array("name"=>$name);
array_push($result, $arr);
}
after that, encode your $result by using json_encode
$json = json_encode($result,true);
echo $json;
Here is my output by echo $json.
[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Inspirational"}]
Try this:
$Genres=array("Chat Show","Non-fiction","Non-fiction");
$new["genres"]=array();
foreach($Genres as $key => $name){
$new["genres"][$key] = ['name' => $name];
}
echo json_encode($new);
Output
{"genres":[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Non-fiction"}]}
The json string you posted here is not a valid json OR is part of json.
So, you might already have genres in your javascript, and want to get the remaining thing, which is
[
{ "name": "Chat Show" },
{ "name": "Non-fiction" },
{ "name": "Inspirational" }
]
Your current PHP $Genres looks like this because you are exploding the string
$Genres = [ 'Chat Show', 'Non-fiction', 'Inspirational' ];
Apply this to change values of your current $Genres
array_walk($Genres, function(&$v){ $v = ['name'=>$v]; });
Use it in your javascript like,
"genres": <?php json_encode($Genres)?>
Try this:
$genres_new['name']=$Genres;
echo json_encode($genres_new);
Your problem is, that you have simple array of strings, but you want an associative multilevel array. This is an relative simple operation. First lets illustrate the problem with some code:
// That is what you have, an :
$Genres = [
"Chat Show",
"Non-fiction",
"Inspirational",
];
// or the same for php > 5.4:
$Genres = array(
"Chat Show",
"Non-fiction",
"Inspirational",
);
This will produce the following json string (echo json_encode($Genres);):
["Chat Show","Non-fiction","Inspirational"]
But if you want such an output:
[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Inspirational"}]
You have to convert the strings into an array. You can do that with that (or a similar loop):
foreach($Genres as $key => $name){
$Genres[$key] = ['name' => $name];
}
After that your array look like this:
Array (
0 =>
array (
'name' => 'Chat Show',
),
1 =>
array (
'name' => 'Non-fiction',
),
2 =>
array (
'name' => 'Inspirational',
),
)
Putting things together you will get something like that:
<?php
// Do whatever is necessary to build your Genres array ...
$Genres = [
"Chat Show",
"Non-fiction",
"Inspirational",
];
// Convert the array into an array of arrays
foreach($Genres as $key => $name){
$Genres[$key] = ['name' => $name];
}
echo json_encode($Genres);
/**
Now you will get this output:
[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Inspirational"}]
*/
// After that you can add it to the bigger array:
$biggerArray = [];
$biggerArray['genres'] = $Genres;
echo json_encode($biggerArray);
/**
Output:
{"genres":[{"name":"Chat Show"},{"name":"Non-fiction"},{"name":"Inspirational"}]}
*/
This question already has answers here:
Is there a function to extract a 'column' from an array in PHP?
(15 answers)
Closed last month.
I have an array which is multidimensional for no reason
/* This is how my array is currently */
Array
(
[0] => Array
(
[0] => Array
(
[plan] => basic
)
[1] => Array
(
[plan] => small
)
[2] => Array
(
[plan] => novice
)
[3] => Array
(
[plan] => professional
)
[4] => Array
(
[plan] => master
)
[5] => Array
(
[plan] => promo
)
[6] => Array
(
[plan] => newplan
)
)
)
I want to convert this array into this form
/*Now, I want to simply it down to this*/
Array (
[0] => basic
[1] => small
[2] => novice
[3] => professional
[4] => master
[5] => promo
[6] => newplan
)
Any idea how to do this?
This single line would do that:
$array = array_column($array, 'plan');
The first argument is an array | The second argument is an array key.
For details, go to official documentation: https://www.php.net/manual/en/function.array-column.php.
Assuming this array may or may not be redundantly nested and you're unsure of how deep it goes, this should flatten it for you:
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, array_flatten($value));
}
else {
$result[$key] = $value;
}
}
return $result;
}
If you come across a multidimensional array that is pure data, like this one below, then you can use a single call to array_merge() to do the job via reflection:
$arrayMult = [ ['a','b'] , ['c', 'd'] ];
$arraySingle = call_user_func_array('array_merge', $arrayMult);
// $arraySingle is now = ['a','b', 'c', 'd'];
Just assign it to it's own first element:
$array = $array[0];
For this particular case, this'll do:
$array = array_map('current', $array[0]);
It's basically the exact same question is this one, look at some answers there: PHP array merge from unknown number of parameters.
$singleArray = array();
foreach ($multiDimensionalArray as $key => $value){
$singleArray[$key] = $value['plan'];
}
this is best way to create a array from multiDimensionalArray array.
thanks
Problem array:
array:2 [▼
0 => array:3 [▼
0 => array:4 [▼
"id" => 8
"name" => "Veggie Burger"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 9
"name" => "Veggie Pitta"
"image" => ""
"Category_type" => "product"
]
2 => array:4 [▼
"id" => 10
"name" => "Veggie Wrap"
"image" => ""
"Category_type" => "product"
]
]
1 => array:2 [▼
0 => array:4 [▼
"id" => 18
"name" => "Cans 330ml"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 19
"name" => "Bottles 1.5 Ltr"
"image" => ""
"Category_type" => "product"
]
]
]
Solution array:
array:5 [▼
0 => array:4 [▼
"id" => 8
"name" => "Veggie Burger"
"image" => ""
"Category_type" => "product"
]
1 => array:4 [▼
"id" => 9
"name" => "Veggie Pitta"
"image" => ""
"Category_type" => "product"
]
2 => array:4 [▼
"id" => 10
"name" => "Veggie Wrap"
"image" => ""
"Category_type" => "product"
]
3 => array:4 [▼
"id" => 18
"name" => "Cans 330ml"
"image" => ""
"Category_type" => "product"
]
4 => array:4 [▼
"id" => 19
"name" => "Bottles 1.5 Ltr"
"image" => ""
"Category_type" => "product"
]
]
Write this code and get your solution , $subcate is your multi dimensional array.
$singleArrayForCategory = array_reduce($subcate, 'array_merge', array());
none of answers helped me, in case when I had several levels of nested arrays. the solution is almost same as #AlienWebguy already did, but with tiny difference.
function nestedToSingle(array $array)
{
$singleDimArray = [];
foreach ($array as $item) {
if (is_array($item)) {
$singleDimArray = array_merge($singleDimArray, nestedToSingle($item));
} else {
$singleDimArray[] = $item;
}
}
return $singleDimArray;
}
test example
$array = [
'first',
'second',
[
'third',
'fourth',
],
'fifth',
[
'sixth',
[
'seventh',
'eighth',
[
'ninth',
[
[
'tenth'
]
]
],
'eleventh'
]
],
'twelfth'
];
$array = nestedToSingle($array);
print_r($array);
//output
array:12 [
0 => "first"
1 => "second"
2 => "third"
3 => "fourth"
4 => "fifth"
5 => "sixth"
6 => "seventh"
7 => "eighth"
8 => "ninth"
9 => "tenth"
10 => "eleventh"
11 => "twelfth"
]
You can do it just using a loop.
$singleArray = array();
foreach ($multiDimensionalArray as $key => $value){
$singleArray[$key] = $value['plan'];
}
Your sample array has 3 levels. Because the first level has only [0], you can hardcode your access into it and avoid an extra function/construct call.
(Code Demos)
array_walk_recursive() is handy and versatile, but for this task may be overkill and certainly a bit more convoluted in terms of readability.
array_walk_recursive($array, function($leafvalue)use(&$flat){$flat[] = $leafvalue;});
var_export($flat);
If this was my code, I'd be using array_column() because it is direct and speaks literally about the action being performed.
var_export(array_column($array[0], 'plan'));
Of course a couple of `foreach() loops will perform very efficiently because language constructs generally perform more efficiently than function calls.
foreach ($array[0] as $plans) {
foreach ($plans as $value) {
$flat[] = $value;
}
}
var_export($flat);
Finally, as a funky alternative (which I can't imagine actually putting to use unless I was writing code for someone whom I didn't care for) I'll offer an array_merge_recursive() call with a splat operator (...).
var_export(array_merge_recursive(...$array[0])['plan']);
Despite that array_column will work nice here, in case you need to flatten any array no matter of it's internal structure you can use this array library to achieve it without ease:
$flattened = Arr::flatten($array);
which will produce exactly the array you want.
This simple code you can use
$array = array_column($array, 'value', 'key');
Recently I've been using AlienWebguy's array_flatten function but it gave me a problem that was very hard to find the cause of.
array_merge causes problems, and this isn't the first time that I've made problems with it either. If you have the same array keys in one inner array that you do in another, then the later values will overwrite the previous ones in the merged array.
Here's a different version of array_flatten without using array_merge:
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$arrayList=array_flatten($value);
foreach ($arrayList as $listItem) {
$result[] = $listItem;
}
}
else {
$result[$key] = $value;
}
}
return $result;
}
There is an error in most voted answer. Here is the correct version.
function array_flatten($array) {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, array_flatten($value));
}
else {
$result[] = $value;
}
}
return $result;
}
The difference is on the line $result[] = $value;
Original answer was $result[$key] = $value;
The $key index is incorrect after flattering any array in the cycle.
Following this pattern
$input = array(10, 20, array(30, 40), array('key1' => '50', 'key2'=>array(60), 70));
Call the function :
echo "<pre>";print_r(flatten_array($input, $output=null));
Function Declaration :
function flatten_array($input, $output=null) {
if($input == null) return null;
if($output == null) $output = array();
foreach($input as $value) {
if(is_array($value)) {
$output = flatten_array($value, $output);
} else {
array_push($output, $value);
}
}
return $output;
}
I've written a complement to the accepted answer. In case someone, like myself need a prefixed version of the keys, this can be helpful.
Array
(
[root] => Array
(
[url] => http://localhost/misc/markia
)
)
Array
(
[root.url] => http://localhost/misc/markia
)
<?php
function flattenOptions($array, $old = '') {
if (!is_array($array)) {
return FALSE;
}
$result = array();
foreach ($array as $key => $value) {
if (is_array($value)) {
$result = array_merge($result, flattenOptions($value, $key));
}
else {
$result[$old . '.' . $key] = $value;
}
}
return $result;
}
I had come across the same requirement to flatter multidimensional array into single dimensional array than search value using text in key. here is my code
$data = '{
"json_data": [{
"downtime": true,
"pfix": {
"max": 100,
"threshold": 880
},
"ints": {
"int": [{
"rle": "pri",
"device": "laptop",
"int": "Ether3",
"ip": "127.0.0.3"
}],
"eth": {
"lan": 57
}
}
},
{
"downtime": false,
"lsi": "987654",
"pfix": {
"min": 10000,
"threshold": 890
},
"mana": {
"mode": "NONE"
},
"ints": {
"int": [{
"rle": "sre",
"device": "desk",
"int": "Ten",
"ip": "1.1.1.1",
"UF": true
}],
"ethernet": {
"lan": 2
}
}
}
]
}
';
$data = json_decode($data,true);
$stack = &$data;
$separator = '.';
$toc = array();
while ($stack) {
list($key, $value) = each($stack);
unset($stack[$key]);
if (is_array($value)) {
$build = array($key => ''); # numbering without a title.
foreach ($value as $subKey => $node)
$build[$key . $separator . $subKey] = $node;
$stack = $build + $stack;
continue;
}
if(!is_numeric($key)){
$toc[$key] = $value;
}
}
echo '<pre/>';
print_r($toc);
My output:
Array
(
[json_data] =>
[json_data.0] =>
[json_data.0.downtime] => 1
[json_data.0.pfix] =>
[json_data.0.pfix.max] => 100
[json_data.0.pfix.threshold] => 880
[json_data.0.ints] =>
[json_data.0.ints.int] =>
[json_data.0.ints.int.0] =>
[json_data.0.ints.int.0.rle] => pri
[json_data.0.ints.int.0.device] => laptop
[json_data.0.ints.int.0.int] => Ether3
[json_data.0.ints.int.0.ip] => 127.0.0.3
[json_data.0.ints.eth] =>
[json_data.0.ints.eth.lan] => 57
[json_data.1] =>
[json_data.1.downtime] =>
[json_data.1.lsi] => 987654
[json_data.1.pfix] =>
[json_data.1.pfix.min] => 10000
[json_data.1.pfix.threshold] => 890
[json_data.1.mana] =>
[json_data.1.mana.mode] => NONE
[json_data.1.ints] =>
[json_data.1.ints.int] =>
[json_data.1.ints.int.0] =>
[json_data.1.ints.int.0.rle] => sre
[json_data.1.ints.int.0.device] => desk
[json_data.1.ints.int.0.int] => Ten
[json_data.1.ints.int.0.ip] => 1.1.1.1
[json_data.1.ints.int.0.UF] => 1
[json_data.1.ints.ethernet] =>
[json_data.1.ints.ethernet.lan] => 2
)
This is my contribuition
function arrayUnica($array, $prefix = "")
{
if (!is_array($array)) {
return false;
}
$new_array = [];
foreach ($array as $key => $value) {
if (is_array($value)) {
$key = is_int($key) ? $prefix . $key . "-" : $key . "_";
$new_array = array_merge($new_array, arrayUnica($value, $key));
} else {
$new_array[$prefix . $key] = $value;
}
}
return $new_array;
}
Hope this will helpful for you,
$array= 'YOUR_MULTIDIMENSIONAL_ARRAY';
$arr=[];
array_walk_recursive($array, function($k){global $arr; $arr[]=$k;});
print_r($arr);
I have done this with OOP style
$res=[1=>[2,3,7,8,19],3=>[4,12],2=>[5,9],5=>6,7=>[10,13],10=>[11,18],8=>[14,20],12=>15,6=>[16,17]];
class MultiToSingle{
public $result=[];
public function __construct($array){
if(!is_array($array)){
echo "Give a array";
}
foreach($array as $key => $value){
if(is_array($value)){
for($i=0;$i<count($value);$i++){
$this->result[]=$value[$i];
}
}else{
$this->result[]=$value;
}
}
}
}
$obj= new MultiToSingle($res);
$array=$obj->result;
print_r($array);
Multi dimensional array to single array with one line code !!!
Enjoy the code.
$array=[1=>[2,5=>[4,2],[7,8=>[3,6]],5],4];
$arr=[];
array_walk_recursive($array, function($k){global $arr; $arr[]=$k;});
print_r($arr);
...Enjoy the code.
Try this it works for me:
$newArray = array();
foreach($operator_call_logs as $array) {
foreach($array as $k=>$v) {
$newArray[$k] = $v;
}
}
Save this as a php file, simply import and use single_array() function
<?php
$GLOBALS['single_array']=[];
function array_conveter($array_list){
if(is_array($array_list)){
foreach($array_list as $array_ele){
if(is_array($array_ele)){
array_conveter($array_ele);
}else{
array_push($GLOBALS['single_array'],$array_ele);
}
}
}else{
array_push($GLOBALS['single_array'],$array_list);
}
}
function single_array($mix){
foreach($mix as $single){
array_conveter($single);
}return $GLOBALS['single_array'];
$GLOBALS['single_array']=[];
}
/* Example convert your multi array to single */
$mix_array=[3,4,5,[4,6,6,7],'abc'];
print_r(single_array($mix_array));
?>
if use php version 7.4 and above
$users = [
[
'Ahmed',
'Mohammed',
],
[
'Saeed',
'Rami',
'Haider',
],
];
$admin = array_merge(...$users);