I need to sort my array-based on the number of elements in the inner array.
It's my current array.
Array
(
[0] => Array
(
)
[1] => Array
(
[0] => 2-3
)
[2] => Array
(
[0] => 5-9
)
[3] => Array
(
[0] => 5-9
[1] => 2-3
)
)
I need to sort the array by this format.
Array
(
[3] => Array
(
[0] => 5-9
[1] => 2-3
)
[2] => Array
(
[0] => 5-9
)
[1] => Array
(
[0] => 2-3
)
[0] => Array
(
)
)
This seems to do it:
<?php
$a = [
[], ['2-3'], ['5-9'], ['5-9', '2-3']
];
$f = fn ($b, $c) => count($c) <=> count($b);
usort($a, $f);
print_r($a);
https://php.net/function.usort
i hope this answer help you
$result = array();
$sorter = array();
foreach($values as $key => $vals){
$sorter[$key]= count($vals);
}
arsort($sorter);
foreach ($sorter as $ii => $va) {
$result[$ii]=$values[$ii];
}
output
Related
I need some help on below array formation. I want to create a custom array using 2 arrays.
This is my first array :-
Array
(
[0] => Array
(
[0] => 26
[1] => 0.0000000000000000
)
[1] => Array
(
[0] => 25
[1] => 0.0000000000000000
)
[2] => Array
(
[0] => 24
[1] => 0.0000000000000000
)
)
This is my second array :-
Array
(
[0] => Array
(
[0] => 24
)
[1] => Array
(
[0] => 26
)
)
I want final array as below. Can someone please suggest how to form this array.
Array
(
[0] => Array
(
[0] => 26
[1] => 0.0000000000000000
)
[2] => Array
(
[0] => 24
[1] => 0.0000000000000000
)
)
I have used below but I want it without foreach.
$finalArray = array();
foreach ($secondArray as $key => $value) {
$key = array_search($value[0], array_column($firstArray, 0));
$finalArray[] = $firstArray[$key];
}
You can use array_filter():
$finalArray = array_filter($firstArray,
fn($item) => in_array($item[0], array_column($secondArray, 0))
);
It could be more efficiant to compute allowed values first:
$allowedValues = array_column($secondArray, 0);
$finalArray = array_filter($firstArray, fn($item) => in_array($item[0], $allowedValues));
Before PHP 7.4, you have to use use() to pass variable to the anonymous function:
$finalArray = array_filter($firstArray,
function($item) use($secondArray) {
return in_array($item[0], array_column($secondArray, 0));
}
);
I want to sum the values of the following array
I would like to group the same items by cumulating them, the output format would also be an array
Array
(
[0] => Array
(
[0] => Array
(
[0] => R421_FD03
[1] => 1
)
[1] => Array
(
[0] => R421_FD03
[1] => 1
)
)
[1] => Array
(
[0] => Array
(
[0] => R421_FD03
[1] => 1
)
[1] => Array
(
[0] => R421_FD02
[1] => 1
)
)
)
I tested this code but the result is not the one I'm waiting for:
$sumArray = array();
array_walk_recursive($data, function($item, $key) use (&$sumArray){
$sumArray[$key] = isset($sumArray[$key]) ? $item + $sumArray[$key] : $item;
});
The result I'm waiting for is this one
Array
(
[0] => Array
(
[0] => R421_FD03
[1] => 3
)
[1] => Array
(
[0] => R421_FD02
[1] => 1
)
)
)
You can apply simple foreach() with array_values()
$final_array = [];
foreach($array as $arr){
foreach($arr as $ar){
$final_array[$ar[0]][0] = $ar[0];
$final_array[$ar[0]][1] = (isset($final_array[$ar[0]][1])) ? $final_array[$ar[0]][1] + $ar[1] : $ar[1];
}
}
$final_array = array_values($final_array);
print_r($final_array);
Output:-https://3v4l.org/lABWG
You can use array_merge with splat operator and then iterate through the array
$merged = array_merge(...$arr);//splat operator
$r = [];
array_walk($merged, function($v,$k) use(&$r){
array_key_exists($v['0'], $r) ? ($r[$v[0]] += $v['1']) : ($r[$v[0]] = $v[1]);
});
print_r($r);
Result :-
Array
(
[R421_FD03] => 3
[R421_FD02] => 1
)
My array is below i need to arrange like array2 (without use $aa['caption1'] like names directly)
arrray1 is
Array
(
[0] => Array
(
[caption1] => Array
(
[0] => gfdhgfjhg
[1] => dfhfgjghk
)
[caption2] => Array
(
[0] => shgjgh
[1] => dhfgkgjl
)
[banner_image] => Array
(
[0] => assets/images/page_content/img_namT7.jpg
[1] => assets/images/page_content/img_R8mzP.jpg
)
)
[1] => Array
(
[heading] => Array
(
[0] =>
)
[pragraph] => Array
(
[0] =>
)
)
)
arrray2 is(Required format )
Array
(
[0] => Array
(
array('caption1'=>'caption1','caption2'=>'shgjgh','banner_image'=>'assets/images/page_content/img_namT7.jpg'),
array('caption1'=>'dfhfgjghk','caption2'=>'dhfgkgjl','banner_image'=>'page_content/img_R8mzP.jpg')
)
[1] => Array
(
array('heading'=>'','pragraph'=>''),
array('heading'=>'fgh','pragraph'=>'ghgh'),
)
)
please any one help me.
The solution using array_keys, array_map and array_combine functions:
// $arr is your initial array
$result = [];
foreach($arr as $v){
$keys = array_keys($v);
$data = call_user_func_array('array_map', [null] + $v);
$result[] = array_map(function($item) use($keys){
return array_combine($keys, $item);
}, $data);
}
print_r($result);
The output:
Array
(
[0] => Array
(
[0] => Array
(
[caption1] => gfdhgfjhg
[caption2] => shgjgh
[banner_image] => assets/images/page_content/img_namT7.jpg
)
[1] => Array
(
[caption1] => dfhfgjghk
[caption2] => dhfgkgjl
[banner_image] => assets/images/page_content/img_R8mzP.jpg
)
)
[1] => Array
(
[0] => Array
(
[heading] =>
[pragraph] =>
)
)
)
I have two array like this
$arr1 = array('Prabhash', 'Nagda', 'Sayyed','Prabhash');
$arr2 = array('4', '1', '2','5');
echo "<pre>";
print_r($arr1);
print_r($arr2);
And I want output like this
Array
(
[0] => Array
(
[0] =>Prabhash
[1] =>9
)
[1] => => Array
(
[0] =>Nagda
[1] =>1
)
[2] => => Array
(
[0] =>Sayyed
[1] =>2
)
)
I have tried to combine and merge array but not success, Hope someone will help me for this better.
PHP code demo
<?php
$arr1 = array('Prabhash', 'Nagda', 'Sayyed','Prabhash');
$arr2 = array('4', '1', '2','5');
$result=array();
foreach($arr1 as $key => $value)
{
if(isset($result[$value]))
{
$result[$value][1]+=$arr2[$key];
}
else
{
$result[$value]=array($value,$arr2[$key]);
}
}
$result= array_values($result);
print_r($result);
Output:
Array
(
[0] => Array
(
[0] => Prabhash
[1] => 9
)
[1] => Array
(
[0] => Nagda
[1] => 1
)
[2] => Array
(
[0] => Sayyed
[1] => 2
)
)
Short solution using array_map, array_keys, array_flip, array_unique, array_intersect_key and array_sum functions:
$arr1 = array('Prabhash', 'Nagda', 'Sayyed','Prabhash');
$arr2 = array('4', '1', '2','5');
$result = array_map(function($n) use($arr1, $arr2){
$sum = array_sum(array_intersect_key($arr2, array_flip(array_keys($arr1, $n))));
return [$n, $sum];
}, array_unique($arr1));
print_r($result);
The output:
Array
(
[0] => Array
(
[0] => Prabhash
[1] => 9
)
[1] => Array
(
[0] => Nagda
[1] => 1
)
[2] => Array
(
[0] => Sayyed
[1] => 2
)
)
Try it.
<?php
$arr1 = array('Prabhash', 'Nagda', 'Sayyed','Prabhash');
$arr2 = array('4', '1', '2','5');
$newArray = array();
foreach($arr1 as $key => $value) {
$newArray[$value][0] =$value;
if(!isset($newArray[$value][1]) || $newArray[$value][1] == null)
$newArray[$value][1] = $arr2[$key];
else
$newArray[$value][1] = $newArray[$value][1]+$arr2[$key];
}
$newArray = array_values($newArray);
echo "<pre>";
print_r($newArray);
?>
OUTPUT :
Array
(
[0] => Array
(
[0] => Prabhash
[1] => 9
)
[1] => Array
(
[0] => Nagda
[1] => 1
)
[2] => Array
(
[0] => Sayyed
[1] => 2
)
)
I'm looking to write a function which creates all permutation of a list of arrays (The list is dynamical). Now I found 2 articles, http://dannyherran.com/2011/06/finding-unique-array-combinations-with-php-permutations/ and Finding cartesian product with PHP associative arrays. But I don't want to store them as multiple arrays, I want to add each array to each possibility so I can use them later.
In fact I want to multiply each array with the other.
For example:
$array = array(
array(
1,
2
),
array(
'A',
'B',
'C'),
array(
'I',
'II')
);
In this form:
Array
(
[0] => Array
(
[0] => 1
[1] => Array
(
[0] => Array
(
[0] => A
[1] => Array
(
[0] => I
[1] => II
)
)
[1] => Array
(
[0] => B
[1] => Array
(
[0] => I
[1] => II
)
)
[2] => Array
(
[0] => C
[1] => Array
(
[0] => I
[1] => II
)
)
)
)
[1] => Array
(
[0] => 2
[1] => Array
(
[0] => Array
(
[0] => A
[1] => Array
(
[0] => I
[1] => II
)
)
[1] => Array
(
[0] => B
[1] => Array
(
[0] => I
[1] => II
)
)
[2] => Array
(
[0] => C
[1] => Array
(
[0] => I
[1] => II
)
)
)
)
)
I think this big example made my problem clear. For this type of array I created a function:
foreach ($array[1] as $value) {
$return1[] = array($value, $array[2]);
}
foreach ($array[0] as $value) {
$return[] = array($value, $return1);
}
print_r($return);
Now I want to create this function inside a recursive function (so it becomes dynamical) but I got stuck. I wanted to pass the amount of arrays to the function and then iterate.
function createTree($array, $loops=3){
$b = $array[$loops-2];
foreach ($b as $v) {
$return[] = array($v, createTree($return, $loops-1));
}
print_r($return);
}
Maybe there is a total other solution to multiply the arrays? But the function which isn't recursive is easy for me, but making it recursive...
Thanks for your help
function createTree($array){
switch(count($array)) {
case 0:
die('Illegal argument.');
case 1:
return $array[0];
default:
$lastArray = array_pop($array);
$subArray = createTree($array);
foreach ($lastArray as $item) {
$return[] = array($item, $subArray);
}
return $return;
}
}
var_dump(createTree(array_reverse($array)));