This question already has answers here:
Transpose 2d array, join second level with commas, and join first level with pipes
(5 answers)
Closed 7 months ago.
I have the following array.
$a = array("Algebra", "Arithmetic");
$b = array("08/01/2020", "08/02/2019");
$c = array("08/01/2020", "08/02/2019");
print_r($a);
print_r($b);
print_r($b);
and the output is
Array(
[0] => Algebra
[1] => Arithmetic
)
Array(
[0] => 08/01/2020
[1] => 08/01/2019
)
Array(
[0] => 08/02/2020
[1] => 08/02/2019
)
And I want Array in the following structure.
Array(
[0] => Algebra,08/01/2020,08/02/2020
[1] => Arithmetic,08/01/2019,08/02/2019
)
I have tried $results = array_merge_recursive($a, $b, $c); but its not giving desire output.
Thanks for help in advance.
A simple foreach loop will suffice
$a = array("Algebra", "Arithmetic");
$b = array("08/01/2020", "08/02/2019");
$c = array("08/01/2020", "08/02/2019");
foreach( $a as $i=>$v ) {
$new[] = sprintf( '%s,%s,%s', $v, $b[$i], $c[$i] );
}
Firstly, when you find yourself using sequentially-named variables it almost always means that they should actually be an array:
$a = array("Algebra", "Arithmetic");
$b = array("08/01/2020", "08/02/2019");
$c = array("08/01/2020", "08/02/2019");
$better_array = [$a, $b, $c];
var_dump($better_array);
Output:
array(3) {
[0]=>
array(2) {
[0]=>
string(7) "Algebra"
[1]=>
string(10) "Arithmetic"
}
[1]=>
array(2) {
[0]=>
string(10) "08/01/2020"
[1]=>
string(10) "08/02/2019"
}
[2]=>
array(2) {
[0]=>
string(10) "08/01/2020"
[1]=>
string(10) "08/02/2019"
}
}
Once they're in an proper array you can use array_column()
$out = [];
for($i=0, $c=count($better_array[0]); $i < $c; ++$i) {
$out[] = array_column($better_array, $i);
}
var_dump($out);
Output:
array(2) {
[0]=>
array(3) {
[0]=>
string(7) "Algebra"
[1]=>
string(10) "08/01/2020"
[2]=>
string(10) "08/01/2020"
}
[1]=>
array(3) {
[0]=>
string(10) "Arithmetic"
[1]=>
string(10) "08/02/2019"
[2]=>
string(10) "08/02/2019"
}
}
And if that comma-delimited string is what you actually want, then use implode():
$out = [];
for($i=0, $c=count($better_array[0]); $i < $c; ++$i) {
$out[] = implode(',', array_column($better_array, $i));
}
var_dump($out);
Output:
array(2) {
[0]=>
string(29) "Algebra,08/01/2020,08/01/2020"
[1]=>
string(32) "Arithmetic,08/02/2019,08/02/2019"
}
Lastly, you should avoid print_r() as it tends to produce misleading output. Eg: https://3v4l.org/ThSLb
You don't get anything built-in for this purpose. You need to build a custom function for this. You can try this-
<?php
$a = array("Algebra", "Arithmetic");
$b = array("08/01/2020", "08/01/2019");
$c = array("08/02/2020", "08/02/2019");
function mergeAssoc()
{
// You can get variable number of arguments|array by this.
$args = func_get_args();
$master = array();
foreach ($args as $arg)
{
foreach ($arg as $i => $v)
{
$master[$i][] = $v;
}
}
return $master;
}
$res = mergeAssoc($a, $b, $c);
print_r($res);
Note: It will return a multidimensional array. Not an array of comma-separated values.
Output:
Array
(
[0] => Array
(
[0] => Algebra
[1] => 08/01/2020
[2] => 08/02/2020
)
[1] => Array
(
[0] => Arithmetic
[1] => 08/01/2019
[2] => 08/02/2019
)
)
and if we use foreach then our desire output will be there with array separated by comma.
foreach ($res as $key => $value) {
$result[] = implode(',', $value);
}
and output of print_r($result); is
Array
(
[0] => Algebra,08/01/2020,08/02/2020
[1] => Arithmetic,08/01/2019,08/02/2019
)
Related
I have a very big array, I will try to explain the issue in small examples:
Input:
Array (
[alert:accountDisabled:heading] => XYZ
[alert:accountDisabled:message] => XYZ
[alert:accountExpired:heading] => XYZ
[alert:accountExpired:message] => XYZ
[alert:errorResponse:heading] => XYZ
[button:back] => XYZ
)
What I need to get is:
array() {
["alert"]=> array(7) {
["accountDisabled"]=> array(2) {
["heading"]=> string(3) "XYZ"
["message"]=> string(3) "XYZ" }
["accountExpired"]=> array(2) {
["heading"]=> string(3) "XYZ"
["message"]=> string(3) "XYZ" }
["clientError"]=> array(2) {
["heading"]=> string(3) "XYZ"
["message"]=> string(3) "XYZ" }
["errorResponse"]=> array(1) {
["heading"]=> string(3) "XYZ" }
}
["button"]=> array(1) {
["back"]=> string(3) "XYZ"
}
As I said this is a very small example, but the point is to get hierarchy from keys from array number one, hierarchy is divided by this character in key :
I checked for those questions that look similar to this one but they are not helpful lat all
How to access and manipulate multi-dimensional array by key names / path?
Using a string path to set nested array data
SO please read carefully the description of my issue.
I tried to use it for each loop, and I succeed to divide elements from the key, for one element, but I'm not sure where I need to store those hierarchy values for the next elements, any ideas?
$input = [
'alert:accountDisabled:heading' => 'XYZ_1',
'alert:accountDisabled:message' => 'XYZ_2',
'alert:accountExpired:heading' => 'XYZ_3',
'alert:accountExpired:message' => 'XYZ_4',
'alert:errorResponse:heading' => 'XYZ_5',
'button:back' => 'XYZ_6'
];
$results = [];
foreach ($input as $key => $value) {
$arr = explode(':', $key);
$result = $value;
for ($i = count($arr) - 1; $i >= 0; $i--) {
$result = [ $arr[$i] => $result ];
}
$results[] = $result;
}
$result = array_merge_recursive(...$results);
print_r($result);
Output:
Array
(
[alert] => Array
(
[accountDisabled] => Array
(
[heading] => XYZ_1
[message] => XYZ_2
)
[accountExpired] => Array
(
[heading] => XYZ_3
[message] => XYZ_4
)
[errorResponse] => Array
(
[heading] => XYZ_5
)
)
[button] => Array
(
[back] => XYZ_6
)
)
Based on Lukas.j answer, you can use this function:
function parsePath($array, $separator = ':'){
$result = [];
foreach($array as $key => $value){
if(strpos($key, $separator) !== FALSE){
$keys = explode($separator, $key);
$inner_result = $value;
foreach (array_reverse($keys) as $valueAsKey) $inner_result = [$valueAsKey => $inner_result];
$result[] = $inner_result;
}
}
return array_merge_recursive(...$result);
}
I have this two arrays that are generated in two foreach loops and I want to set the first array as keys and the second one as values.
after I use this code
foreach ($difference AS $j) {
$fv = $cate->getFilterValueByFeatureID($j);
foreach ($fv AS $z) {
$array = array(
$j => $z
);
var_dump($array);
}
}
this is what I get
array(1) {
[6]=>
int(15)
}
array(1) {
[6]=>
int(20)
}
array(1) {
[8]=>
int(26)
}
array(1) {
[8]=>
int(27)
}
array(1) {
[8]=>
int(33)
}
and I want this result
array(1){
[6] => array(
[0] => 15
[1] => 20
)
array(1){
[8] => array(
[0] => 26
[1] => 27
[2] => 33
)
Like this (untested)
$result = [];
foreach ($difference AS $j) {
$fv = $cate->getFilterValueByFeatureID($j);
foreach ($fv AS $z) {
if(!isset($result[$j])) $result[$j] = [];
$result[$j][] = $z;
}
}
var_dump($result);
I want to update empty array .So I check is empty and want to update the original variable.So I tried by & but it doesn't change empty array $array2 .I had tried many hours but not working!!!
<?php
$array1 = array('one','two','three');
$array2 = array();
$array3 = array ('four');
$array4 = array ('five','six');
check([&$array1,&$array2,&$array3,&$array4]);
function check($arr){
foreach ($arr as $k=>$value) {
if(empty($value)){
$arr[$k][] = "nothing";
return $arr[$k];
}
else{
return $arr[$k];
}
}
}
var_dump($array2);
//actual output : empty
//expect output : 0 => string 'nothing'
?>
Have a look following code.
$array1 = array('one','two','three');
$array2 = array();
$array3 = array ('four');
$array4 = array ('five','six');
$arr11=check([&$array1,&$array2,&$array3,&$array4]);
function check($arr){
foreach ($arr as $k=>$value) {
print_r($value);
if(empty($value)){
$arr[$k] = "nothing";
}
else{
$arr[$k];
}
}
return $arr;
}
print_r($arr11);
var_dump($array2);
//actual output : empty
//expect output : 0 => string 'nothing'
It will display following result.
Array
(
[0] => Array
(
[0] => one
[1] => two
[2] => three
)
[1] => nothing
[2] => Array
(
[0] => four
)
[3] => Array
(
[0] => five
[1] => six
)
)
string(7) "nothing"
This will work for you:
<?php
$array1 = array('one','two','three');
$array2 = array();
$array3 = array ('four');
$array4 = array ('five','six');
list($array1, $array2, $array3, $array4) = check([$array1,$array2,$array3,$array4]);
function check($arr){
foreach ($arr as $k => $value) {
if(empty($value)){
$arr[$k] = "nothing";
}
}
return $arr;
}
var_dump($array2);
//actual output : string(7) "nothing"
//expect output : string(7) "nothing"
?>
You've written your function very strangely, actually.
UPDATE. Output of other arrays instead of only one.
var_dump($array1, $array2, $array3, $array4);
array(3) {
[0]=>
string(3) "one"
[1]=>
string(3) "two"
[2]=>
string(5) "three"
}
string(7) "nothing"
array(1) {
[0]=>
string(4) "four"
}
array(2) {
[0]=>
string(4) "five"
[1]=>
string(3) "six"
}
i have array an with this result :
Array
(
[A] => Array
(
[0] => A
[1] => B
[2] => C
)
[B] => Array
(
[0] =>AA
[1] =>BB
[2] =>CC
)
[C] => Array
(
[0] =>AAA
[1] =>BBB
[2] =>CCC
)
)
i want to get like rows and print like with this result to each row:
A AA AAA
B BB BBB
C CC CCC
how to use foreach to print that result?
foreach ($result as $kk => $arr)
{
foreach($arr as $k=>$v)
{
if ( $k == 'A')
echo $arr[0];
if ( $k == 'B')
echo $arr[1];
if ( $k == 'B')
echo $arr[2]."<br />";
}
}
Create a new tmp variable for storing our new order.
$tmp = array();
How deep will the array go? In your example we go down 3 levels..
$depth = 3;
The array you want to sort
$result = array(
'a' => array( 'a', 'b', 'c' ),
'b' => array( 'aa', 'bb', 'cc' ),
'c' => array( 'aaa', 'bbb', 'ccc' ),
);
For each level in $result down to $depth.
for ($i=0; $i<$depth; $i++)
{
// Loop true our results and push them in to the right position in our $tmp array.
foreach ($result as $row)
{
$tmp[$i][] = $row[$i];
}
}
Output var_dump($tmp):
array(3) {
[0]=>
array(3) {
[0]=>
string(1) "a"
[1]=>
string(2) "aa"
[2]=>
string(3) "aaa"
}
[1]=>
array(3) {
[0]=>
string(1) "b"
[1]=>
string(2) "bb"
[2]=>
string(3) "bbb"
}
[2]=>
array(3) {
[0]=>
string(1) "c"
[1]=>
string(2) "cc"
[2]=>
string(3) "ccc"
}
}
And of course.. to print out your re-ordered array with foreach:
foreach($tmp as $row) {
echo "{$row[0]} {$row[1]} {$row[2]}";
}
will give you:
a aa aaa
b bb bbb
c cc ccc
If you denote your input as $hash, then $result will have the array in the form that you need:
$arr = array_values($hash);
$result = array();
$len = count($arr);
$lenNested = count($arr[0]);
for($i = 0; $i < $len; $i++){
for($j = 0; $j < $lenNested; $j++){
$result[$j][$i] = $arr[$i][$j];
}
}
This is just transposition of $hash. Now you can print out $result line by line.
I have an array that looks like this:
array(3) {
[0]=>
array(2) {
[0]=>
string(10) "2012-11-14"
[1]=>
string(5) "3238"
}
[1]=>
array(2) {
[0]=>
string(10) "2012-11-13"
[1]=>
string(5) "3231"
}
[2]=>
array(2) {
[0]=>
string(10) "2012-11-13"
[1]=>
string(5) "3231"
}
I would like to write a foreach loop that would turn this array into:
array(2) {
[0]=>
array(1) {
"2012-11-14" => "3238"
}
[1]=>
array(1) {
"2012-11-13" => "3231"
}
So, basically, I would like to use the array element formatted as Y-M-D date as key to the second element in the array.
Given the following array...
$array = array(
0 => array(0 => "2012-11-14", 1 => "3238"),
1 => array(0 => "2012-11-13", 1 => "3231"),
2 => array(0 => "2012-11-13", 1 => "3231"),
);
putting it into a new array like this:
$new_array = array();
foreach ($array as $key => $item)
{
$new_array[$key][$item[0]] = $item[1];
}
print_r($new_array);
produces this output:
Array
(
[0] => Array
(
[2012-11-14] => 3238
)
[1] => Array
(
[2012-11-13] => 3231
)
[2] => Array
(
[2012-11-13] => 3231
)
)
My answer doesn't get rid of the duplicates, but the added dimension as specified in the original question means that duplicate dates as keys aren't an issue.
<?php
$data = array(
array("2012-11-14", "3238"),
array("2012-11-13", "3231"),
array("2012-11-13", "3231") // warning! when there are two record with same date, the second's count will be display
);
$result = array();
foreach ($data as $value) {
$result[$value[0]] = $value[1];
}
echo '<pre>';
print_r($result);
<?php
$newArray = array();
for($i=0;$i<count($arrayVariable);$i++)
{
$newArray[$arrayVariable[$i][0]] = $arrayVariable[$i][1];
}
echo '<pre>';print_r($newArray);echo '</pre>';
?>
Didn't test it but something like this should work in concept. Of course change arrayVariable to your variable.. but that aside.
You can use this code to get what you want:
$dates = array(
array("2012-11-01", "3238"),
array("2012-11-03", "4321")
);
print_r($dates);
$result = array();
foreach($dates as $value) {
$result[][$value[0]] = $value[1];
}
print_r($result);
The output will look like the requested form:
Array
(
[0] => Array
(
[2012-11-01] => 3238
)
[1] => Array
(
[2012-11-03] => 4321
)
)
Codepad demo: http://codepad.org/XAmUEdYh
However, I would personally prefer Aykut's solution. You would of course have a problem when you've got two records with the same date, but the overall array layout is a bit nicer ;).
Here is what I came up with:
<?php
$original = array(
array(
"2012-11-14",
"3238"
),
array(
"2012-11-13",
"3231"
),
array(
"2012-11-13",
"3231"
)
);
$newArray = array();
foreach($original as $subArray){
$newArray[] = array($subArray[0] => $subArray[1]);
}
var_dump($newArray);