For example a multidimensional array like an example below
$arr = array(
[H1] => array(
"name" => "A"
"title" => "T1"
)
[H2] => array(
"name" => "B"
"title" => "B1"
)
)
Let's say I would like to search name which equals to A in $arr and if it's matched, the searching should return the key which is H1
How can I do that in php ?
I tried array_keys($arr, "A") but it returns me with an array instead of the key.
This may help -
$arr = array(
'H1' => array(
"name" => "A",
"title" => "T1",
),
'H2' => array(
"name" => "B",
"title" => "B1",
)
);
// Generate a new array with 'keys' and values in 'name'
$new = array_combine(array_keys($arr), array_column($arr, 'name'));
// Search in that new array
$search = array_search('A', $new);
var_dump($search);
Output
string(2) "H1"
Demo
Another simple way would be -
$serach= false;
foreach($arr as $key => $val) {
if($val['name'] == 'A') {
$search= $key;
break;
}
}
var_dump($search);
Related
How to modify an array based on the value as key?
array(
array(
"name" => "BIBAR",
"cutoff" => 20220725,
"totals" => 5614
),
array(
"name" => "BIBAR",
"cutoff" => 20220810,
"totals" => 5614
),
array(
"name" => "BIBAR",
"cutoff" => 20220825,
"totals" => 5614
)
);
I tried the following but it's not working:
foreach($cutoffs as $catoff) {
$ii = 0;
$sums[$ii][$catoff] = array_filter($array, function($val){
return $val['cutoff'] === $catoff ? $val['totals'] : $val;
});
$ii++;
}
My desired array:
array(
'20221025' => array(
12345,
12343,
24442
),
'20221110' => array(
3443,
744334
)
)
I'm stuck here for hours ... Please help
IF the "name" is irrelevant, I think also the previous answer should be fine.
If this code does "not work", then your explanation might be wrong, so you need to either explain better, or give us more examples - please mind that in your example the input and output are very different - the input you gave does not match your ouput.
My code is:
$a = array(
array(
"name" => "BIBAR",
"cutoff" => 20220725,
"totals" => 5614
),
array(
"name" => "BIBAR",
"cutoff" => 20220810,
"totals" => 5614
),
array(
"name" => "BIBAR",
"cutoff" => 20220725,
"totals" => 1234
)
);
print_r($a);
echo "\n================================\n\n";
$newArr = [];
foreach ($a as $k => $vArr) {
// maybe some validation would be useful here, check if they keys exist
$newArr[$vArr['cutoff']][] = $vArr['totals'];
}
print_r($newArr);
function changeArr($data){
$new = [];
foreach ($data as $v){
$new[$v['cutoff']][] = $v['totals'];
}
return $new;
}
I have the following array :
$output = array(
1507073550 => array(
0 => array(
"userid" => "1507073550"
"username" => "ma_alikhani"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/75538099_557824008392923_8054831368279949312_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
1 => array(
"userid" => "11863258101"
"username" => "rasouli680"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/70326284_949495768737898_5241573836020776960_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
2 => array(
"userid" => "16528062"
"username" => "alireza"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/70597112_740563976416368_5253996423334068224_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
)
16528062 => array(
0 => array(
"userid" => "16528062"
"username" => "alireza"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/70597112_740563976416368_5253996423334068224_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
1 => array(
"userid" => "1507073550"
"username" => "ma_alikhani"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/75538099_557824008392923_8054831368279949312_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
)
)
and I want to intersection of keys of this array. get first key "1507073550" and second key "16528062" and intersect all of their data.
it's not always have 2 keys, it might have +2 keys, i wrote this code but I'm getting array to string conversion error.
$keys = array_keys($output);
foreach ($keys as $index => $values)
{
$current_value = $output[$values]; // or $current_value = $a[$keys[$index]];
$next_key = next($keys);
$next_value = $output[$next_key] ?? null; // for php version >= 7.0
$a[] = array_intersect_assoc($current_value,$next_value);
}
and I'm expecting this result :
array(
0 => array(
"userid" => "1507073550"
"username" => "ma_alikhani"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/75538099_557824008392923_8054831368279949312_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
1 => array(
"userid" => "16528062"
"username" => "alireza"
"type" => "comment"
"profile_image" => "https://instagram.fgbb2-1.fna.fbcdn.net/v/t51.2885-19/s150x150/70597112_740563976416368_5253996423334068224_n.jpg?_nc_ht=instagram.fgbb2-1.fna.fbcdn.net&_nc_ohc"
)
)
I really don't know how to do it !
I'd be appreciated for your helps.
function intersect(array $src, array $keys)
{
// Require that both $src and $keys have data
if (!$src || !$keys) {
return [];
}
// Hold the users for each key in $keys
$sets = [];
// Store the users from $src to $sets as dictated by $keys
foreach ($keys as $key) {
if (isset($src[$key])) {
// Re-key the list of users with their user id
$userIds = array_column($src[$key], 'userid');
$sets[$key] = array_combine($userIds, $src[$key]);
}
}
if (count($sets) !== count($keys)) {
// Up to you if you want to require that all keys must be valid/present in the $src
}
// Get the users present in all of the set dictated by $keys
$users = call_user_func_array('array_intersect_key', $sets);
return $users;
};
To use:
$output = [ ... ]; // $ouput in the question
$keys = [1507073550, 16528062]; // see question
$users = intersect($output, $keys);
There are 2 arrays Say
1. Groups
$groups = array("user", "account", "client")
2. Results
$results = array(
0 => array(
"user" => "U1",
"account" => "A1",
"client" => "C1"
),
1 => array(
"user" => "U1",
"account" => "A2",
"client" => "C1"
),
0 => array(
"user" => "U1",
"account" => "A3",
"client" => "C1"
),
0 => array(
"user" => "U1",
"account" => "A2",
"client" => "C2"
),
0 => array(
"user" => "U1",
"account" => "A1",
"client" => "C4"
),
0 => array(
"user" => "U1",
"account" => "A1",
"client" => "C5"
),
0 => array(
"user" => "U1",
"account" => "A2",
"client" => "C5"
)
) ;
I want following OUTPUT
$output = array(
"U1" => array(
"A1" => array(C1,C4,C5),
"A2" => array(C1,C2,C5),
"A3" => array(C1)
)
);
The Groups array values are dynamic and may be any order. I want output in order the first value of groups array is the parent element of Output array and second value of group array is the child of parent Output array and so on.
I hope you are using PHP greater or equal to 5.6. There we have ... (splat operator) that will come really handy:
$output = [];
array_map(function (...$keys) use (&$output) {
// Pop the last key, because it is actually a value.
$value = array_pop($keys);
// Prepare "element" to assign the value to using keys and references.
$element = &$output;
while($key = array_shift($keys)) {
if (!isset($element[$key])) {
$element[$key] = [];
}
$element = &$element[$key];
}
$element[] = $value;
}, ...array_map(function ($group) use ($results) {
return array_column($results, $group);
}, $groups));
Here is working demo.
In short, we take advantage of the ability of array_map to take any number of arrays as arguments and traverse them kinda parallelly.
Simply make a foreach loop like this
$new = array();
foreach($results as $key=>$value){
$new[$value["user"]][$value["account"]][] = $value["client"];
}
print_r($new);
live demo : https://eval.in/857969
Using $groups : https://eval.in/857970
$new = array();
foreach($results as $key=>$value){
$new[$value[$groups[0]]][$value[$groups[1]]][] = $value[$groups[2]];
}
Example for multiple user's : https://eval.in/857973
Update
For dynamic groups array : You can use eval if you are not interacting user input here. : https://eval.in/858306
I have the following array:
$array = Array(
"0" => Array (
"id" => 1081,
"name" => "John"
),
"1" => Array (
"id" => 1082,
"name" => "Matt"
),
"2" => Array (
"id" => 1083,
"name" => "Roger"
)
);
Is there anyway I can get name if I only know the id but without having to iterate through the array?
For PHP >= 5.5.0:
$id = 1082;
$result = array_column($array, 'name', 'id')[$id];
As Barmar points out, to get an array that is easy to use with id as the index:
$id = 1082;
$result = array_column($array, 'name', 'id');
echo $result[$id];
You can make an associative array that refers to the same elements, then use that:
function make_assoc(&$array, $keyname) {
$new_array = array();
foreach ($array as &$elt) {
$new_array[$elt[$keyname]] = $elt;
}
return $new_array;
}
$assoc_array = make_assoc($array, 'id');
Now you can use $assoc_array[1083] to access the third item in the original array. And since this returns an array of references, modifying that will also modify the element of the original array.
You can use array_map to search into your array if your PHP < 5.5.0 and you don't have array_column:
<?php
$array = Array(
"0" => Array (
"id" => 1081,
"name" => "John"
),
"1" => Array (
"id" => 1082,
"name" => "Matt"
),
"2" => Array (
"id" => 1083,
"name" => "Roger"
)
);
$find = 1082;
$value = '';
$arr = array_map(function($n) use ($find, &$value) {if ($n['id'] == $find) $value = $n['name']; }, $array);
print_r($value);
?>
Suppose i have a array like this :
Array(
'1' => Array(
"ID" => 1,
"Name" => "name 1"
),
'2' => Array (
Array(
"ID" => 2,
"Name" => "name 2"
)
),
'3' => Array(
Array(
Array(
Array(
"ID" => 3,
"Name" => "name3"
)
)
),
'4' => Array (
Array {
"ID" => 4,
"Name" => "name 4"
),
Array(
"ID" => 5,
"Name" => "name 5"
),
Array(
"ID" => 6,
"Name" => "name 6"
)
);
number of sub-arrays is not ordered it may be 3, 4 or 5 etc...
and i wanted to get :
Array(
Array( "ID" => 1, "Name" => "name 1"),
Array( "ID" => 2, "Name" => "name 2"),
Array( "ID" => 3, "Name" => "name 3"),
Array( "ID" => 4, "Name" => "name 4"),
Array( "ID" => 5, "Name" => "name 5"),
Array( "ID" => 6, "Name" => "name 6"));
Is there an easy way to do this ?
EDIT :
Edited the above array to add :
'4' => Array (
Array {
"ID" => 4,
"Name" => "name 4"
),
Array(
"ID" => 5,
"Name" => "name 5"
),
Array(
"ID" => 6,
"Name" => "name 6"
)
);
which aren't nested but i still want them to be in my final array.
Thanks.
//Assuming your data is in $in
$out=array();
foreach($in as $k=>$v) {
while ((is_array($v)) && (isset($v[0]))) $v=$v[0];
//See below for next line
$out[]=$v;
}
print_r($out);
With the marked line being either $out[$k]=$v; or $out[]=$v; depending on wether you want to keep the 1st-level keys. In your desired output you do not ,so use the shown version
Edit
With you changed input array, you need to do something like
function addtoarray($inarray, &$outarray) {
foreach ($inarray as $i) {
if (!is_array($i)) continue;
if (isset($i['ID'])) $outarray[]=$i;
else addtoarray($i,$outarray);
}
}
$out=array();
addtoarray($in,$out);
print_r($out);
This was tested against your new input data
You could recurse through the array and check for the ID field.
function combine_array(array $src, array &$dest)
{
if( isset( $src['ID'] ) ) {
$dest[] = $src;
return;
}
foreach( $sub in $src ) {
combine_array( $sub, $dest );
}
}
Just wrote this off the top of my head, no testing, so it might have a few problems. But that's the basic idea.
This may work for you, assuming $array is the variable and php 5.3
//process
$array = array_map(function($block) {
$return = '';
foreach ($block as $sub) {
if (true === isset($sub['ID']) {
$return = $block;
break;
}
}
return $block;
}, $array);
array_filter($array); //remove empty elements
Wrote up a quick recursive function. You'll need to write any appropriate error handling and check the logic, since a discrepancy in your data could easily turn this into an infinite loop:
$output = array();
foreach ( $data as $d ) {
$output[] = loop_data( $d );
}
function loop_data( $data ) {
// Check if this is the right array
if( ! array_key_exists( "ID", $data ) ) {
// Go deeper
$data = loop_data( $data[0] );
}
return $data;
}