I have two arrays
$arr1=Array
(
[0] => Array
(
[0] => 'a'
),
[1]=>Array
(
[0]=>'b'
),
[2] => Array
(
[0] => 'c'
),
[3]=>Array
(
[0]=>'d'
),
[4]=>Array
(
[0]=>'e'
)
);
$arr2=array('1','2');
output should be
$arr3=Array
(
[0] => Array
(
[0] => 'a',
[1]=>'1'
),
[1]=>Array
(
[0]=>'b',
[1]=>'2'
),
[2] => Array
(
[0] => 'c',
[1]=>'1'
),
[3]=>Array
(
[0]=>'d',
[1]=>'2'
),
[4]=>Array
(
[0]=>'e',
[1]=>'1'
)
);
can someone please suggest me some solutions
You can do this with a MultipleIterator and attach the first array as ArrayIterator and the second one as InfiniteIterator, e.g.
<?php
$arr1 = [["a"], ["b"], ["c"], ["d"], ["e"]];
$arr2 = [1,2];
$result = [];
$mIt = new MultipleIterator();
$mIt->attachIterator(new ArrayIterator($arr1));
$mIt->attachIterator(new InfiniteIterator(new ArrayIterator($arr2)));
foreach($mIt as $v)
$result[] = array_merge($v[0], [$v[1]]);
print_r($result);
?>
This version will allow $arr2 to contain any number of values, should that be a requirement:
<?php
$arr1 = [
['a'], ['b'], ['c'], ['d'], ['e'],
];
$arr2 = ['1', '2'];
// wrap the array in an ArrayIterator and then in an
// InfiniteIterator - this allows you to continually
// loop over the array for as long as necessary
$iterator = new InfiniteIterator(new ArrayIterator($arr2));
$iterator->rewind(); // start at the beginning
// loop over each element by reference
// push the current value in `$arr2` into
// each element etc.
foreach ($arr1 as &$subArray) {
$subArray[] = $iterator->current();
$iterator->next();
}
print_r($arr1);
This yields:
Array
(
[0] => Array
(
[0] => a
[1] => 1
)
[1] => Array
(
[0] => b
[1] => 2
)
[2] => Array
(
[0] => c
[1] => 1
)
[3] => Array
(
[0] => d
[1] => 2
)
[4] => Array
(
[0] => e
[1] => 1
)
)
Hope this helps :)
Related
// ARRAY
(
[apple] => one
[orange] => two
[strawberry] => three
)
// NEW ARRAY
(
[0] => Array
(
[0] => apple
[1] => one
)
[1] => Array
(
[0] => orange
[1] => two
)
[2] => Array
(
[0] => strawberry
[1] => three
)
)
I want to create an array for each key of the current array, so i can use this in a foreach later. Is it possible?
I've tried everything without success.
You can loop through every elements in your associative array and create an empty array before the loop. Then push the key as well as value to the new array. This way you can get that desirable output:
<?php
$assocArray = [
"apple" => "one",
"orange" => "two",
"strawberry" => "three"
];
echo "Before: \n\r";
print_r($assocArray);
$newArray = [];
foreach ($assocArray as $key => $item) {
$newArray[] = [$key, $item];
}
echo "After: \n\r";
print_r($newArray);
Output
Before:
Array
(
[apple] => one
[orange] => two
[strawberry] => three
)
After:
Array
(
[0] => Array
(
[0] => apple
[1] => one
)
[1] => Array
(
[0] => orange
[1] => two
)
[2] => Array
(
[0] => strawberry
[1] => three
)
)
``
You can also do this:
$array = [
'apple' => 'one',
'orange' => 'two',
'strawberry' => 'three',
];
$output = array_map(function($k, $v) {
return [$k, $v];
}, array_keys($array), $array);
var_dump($output);
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 have 2 array.
First Array:
$array = array(
'a' => 'b',
'b' => 'c',
'c' => 'd',
);
Second Array:
$array = Array
(
[a] => Array
(
[0] => b
[1] => h
)
[b] => c
[c] => d
[h] => m
)
i need to change this array like
First array:
Array
(
[a] => Array
(
[b] => Array
(
[c] => Array
(
[d] => d
)
)
)
)
Second Array:
Array
(
[a] => Array
(
[b] => Array
(
[c] => Array
(
[d] => Array
(
)
)
)
[h] => Array
(
[m] => Array
(
)
)
)
)
sirwilliam answers helped for first array problem. and I need it for multi dimensional array. Help to resolve the problem. Thanks in advance
You can try to use & (references):
PHP:
$array = array(
'a' => 'b',
'b' => 'c',
'c' => 'd',
);
$newArray = array();
$newArray[key($array)] = array();
$part = &$newArray;
foreach($array as $first => $second){
$part = &$part[$first];
$part[$second] = array();
}
echo "<pre>";
print_r($newArray);
echo "</pre>";
?>
Result:
Array
(
[a] => Array
(
[b] => Array
(
[c] => Array
(
[d] => Array
(
)
)
)
)
)
Then you can create a loop for the last part.
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)));
This is probably not so hard, but I have searched for a while with no luck so any help will be appreciated.
I'm working in PHP with two arrays which contain a number of multidimensional arrays each with a set of two values. The 2 arrays looks something like this:
Array
(
[0] => Array
(
[0] => 3206.63
[1] => 815.47
)
[1] => Array
(
[0] => 5024.71
[1] => 803.73
)
[2] => Array
(
[0] => 3290.36
[1] => 625.02
)
//...
)
Array
(
[0] => Array
(
[0] => 3138.87
[1] => 819.8
)
[1] => Array
(
[0] => 5000.24
[1] => 810.87
)
[2] => Array
(
[0] => 3221.15
[1] => 668.58
)
//...
)
And I need to achieve this:
Array
(
[0] => Array
(
[0] => 6345.5
[1] => 1635.27
)
[1] => Array
(
[0] => 10024.95
[1] => 1614.6
)
[2] => Array
(
[0] => 6511.51
[1] => 1293.6
)
//...
)
This should work for you:
(Here i loop though each innerArray with foreach and use array_sum() to get the sum of all values of each innerArray)
<?php
$arr = array(
array(
3206.63,
815.47
),
array(
5024.71,
803.73
),
array(
3290.36,
625.02
)
);
$result = array();
foreach($arr as $v)
$result[] = array_sum($v);
print_r($result);
?>
Output:
Array ( [0] => 4022.1 [1] => 5828.44 [2] => 3915.38 )
If you have 2 Arrays you can use this:
$result = array();
foreach($arr1 as $k => $v)
$result[] = array_sum($arr1[$k]) + array_sum($arr2[$k]);
print_r($result);
EDIT:
From your updated question, this should work for you:
<?php
$arr1 = array(
array(
3206.63,
815.47
),
array(
5024.71,
803.73
),
array(
3290.36,
625.02
)
);
$arr2 = array(
array(
3138.87,
819.8
),
array(
5000.24,
810.87
),
array(
3221.15,
668.58
)
);
$sums = array();
foreach ($arr1 as $key => $value) {
$sums[$key][] = $arr1[$key][0] + $arr2[$key][0];
$sums[$key][] = $arr1[$key][1] + $arr2[$key][1];
}
print_r($sums);
?>
Output:
Array
(
[0] => Array
(
[0] => 6345.5
[1] => 1635.27
)
[1] => Array
(
[0] => 10024.95
[1] => 1614.6
)
[2] => Array
(
[0] => 6511.51
[1] => 1293.6
)
)