Related
How to get the distinct keys ($key) and multiple different values ($myObjectValues) in list of objects?
My expected outcome is distinct keys displays as column in table and its different values display as multiple rows. The column ($key) should not be hardcore and I plan to display in blade view.
Ideal:
Current Code:
foreach($x as $key => $item) {
print_r($key); //this is list number
foreach($item as $key => $myObjectValues){
print_r($key); //this is my object key
print_r($myObjectValues); //this is my object values
}
}
This is the json array object ($x).
Array(
[0] => stdClass Object
(
[milk_temperature] => 10
[coffeebean_level] => 124.022
)
[1] => stdClass Object
(
[milk_temperature] => 1099
[soya_temperature] => 10
[coffeebean_level] => 99.022
)
[2] => stdClass Object
(
[milk_temperature] => 1099
[coffeebean_level] => 99.022
)
)
You can do it like this, it's not the best approach in the world but it works and you can use it as an example. First you create a list with the table header titles and then start by printing the header and then the values.
<?php
$x = [
(object) [
'milk_temperature' => 10,
'coffeebean_level' => 124.022
],
(object) [
'milk_temperature' => 1099,
'soya_temperature' => 10,
'coffeebean_level' => 99.022
],
(object) [
'milk_temperature' => 1099,
'coffeebean_level' => 99.022
]
];
// list all the keys
$keys = [];
foreach($x as $key => $item) {
$keys = array_merge($keys, array_keys((array) $item));
}
$keys = array_unique($keys);
// echo the header
foreach ($keys as $key) {
echo $key . ' ';
}
echo "\n";
// echo the values
foreach($x as $item) {
foreach ($keys as $key) {
echo $item->$key ?? '-'; // PHP 7+ solution
// echo isset($item->$key) ? $item->$key : '-'; // PHP 5.6+
echo ' ';
}
echo "\n";
}
You can first get the keys of the array with array_keys() and array_collapse():
$columns = array_keys(array_collapse($records));
Then you look through the $records using the same loop you already have. Let's demo it with this example:
$columns = array_keys(array_collapse($records));
foreach($records as $key => $item) {
//these are each record
foreach ($columns as $column) {
//each column where you build the header
// converts $item to an array
$item = (array)$item;
if (! array_key_exists($column, (array)$item)) {
// show '---'
echo '---';
continue;
}
//show $item[$item]
echo $item[$column];
}
}
The great advantage of doing so i.e getting the columns first (apart from converting the stdClass to an array) is that the columns array can be used any way you deem fit.
It would be more beneficial if you can have your data all as array then you can easily use the array functions available on it.
I am using Spout Excel reader to read Excel files from php code and saving into a multidimensional array in PHP variable,Array looks like this
$array = [
[
'id[0]' => 'BX-78',
'Name[0]' => 'XXX',
'Address[0]' => 'YUUSATD'
],
[
'id[1]' => 'BX-79',
'Name[1]' => 'YYY',
'Address[1]' => 'DHJSHDJGY'
],
[
'id[2]' => 'BX-80',
'Name[2]' => 'ZZZ',
'Address[2]' => 'DDSDSDA'
]
[
'id[3]' => 'BX-78',
'Name[3]' => 'AAA',
'Address[3]' => 'FSDSDS'
][
'id[4]' => 'BX-81',
'Name[4]' => 'XXX',
'Address[4]' => 'DSDSDSD'
]];
Now i want to show duplicate data from above array using two keys ['id'] and ['name'] if id repeats show as duplicate data,
If name repeats show that row as duplicate data if both are duplicate show as again duplicate row
Otherwise it is unique row.
I have tried using multidimensional array sorting but it is using only one key to match data in rows.
foreach ($arrExcelData as $v) {
if (isset($arrExcelData[$v[0]])) {
// found duplicate
continue;
}
// remember unique item
$arrExcelData3[$v[0]] = $v;
}
// if you need a zero-based array, otheriwse work with $_data
$arrExcelData2 = array_values($arrExcelData3);
Edited : Expected Output Result :
Matching Rows:
Id Name Address
-------------------------
BX-78 XXX YUUSATD
BX-78 AAA DDSDSDA
BX-81 XXX DSDSDSD`
If you want to list the duplicate values, I think the address of the second match should be FSDSDS as there is not item with name AAA and value DDSDSDA:
BX-78 AAA FSDSDS
If that is the case, what you could do is to first use a double foreach to mark the arrays that contain a duplicate id or name by for example adding a property named id and name except when the array is itself in the second loop.
After this loop, you can tell which arrays are the duplicate ones. Instead of using a corresponding index 0 as in id[0], I have used reset and next so it is not tied to these indexes.
To get the filtered result you could use array_reduce to check for the array keys and unset them.
For example:
foreach ($array as $index => $a) {
foreach ($array as $v) {
if ($v === $a) continue;
if (reset($v) === reset($a)) $array[$index]["id"] = "duplicate";
if (next($v) === next($a)) $array[$index]["name"] = "duplicate";
}
}
$array = array_reduce($array, function($carry, $item) {
if (array_key_exists("id", $item) || array_key_exists("name", $item)) {
unset($item["id"], $item["name"]);
$carry[] = $item;
}
return $carry;
}, []);
print_r($array);
Result
Array
(
[0] => Array
(
[id[0]] => BX-78
[Name[0]] => XXX
[Address[0]] => YUUSATD
)
[1] => Array
(
[id[3]] => BX-78
[Name[3]] => AAA
[Address[3]] => FSDSDS
)
[2] => Array
(
[id[4]] => BX-81
[Name[4]] => XXX
[Address[4]] => DSDSDSD
)
)
See a php demo
I've this very pragmatic approach:
$spout_output = [
[
'id[0]' => 'BX-78',
'Name[0]' => 'XXX',
'Address[0]' => 'YUUSATD'
],
[
'id[1]' => 'BX-79',
'Name[1]' => 'YYY',
'Address[1]' => 'DHJSHDJGY'
],
[
'id[2]' => 'BX-80',
'Name[2]' => 'ZZZ',
'Address[2]' => 'DDSDSDA'
],
[
'id[3]' => 'BX-78',
'Name[3]' => 'AAA',
'Address[3]' => 'FSDSDS'
],
[
'id[4]' => 'BX-81',
'Name[4]' => 'XXX',
'Address[4]' => 'DSDSDSD'
]];
// store id to row, and name to row mappings.
// id and name will be keys, value will be an array of indexes of the array $spout_output
$id_to_rows = array();
$name_to_rows = array();
$duplicate_ids = array();
$duplicate_names = array();
foreach($spout_output as $row => $data)
{
$key_id = 'id['.$row.']';
$key_name = 'Name['.$row.']';
if(!isset($data[$key_id]))
continue;
$value_id = $data[$key_id];
$value_name = $data[$key_name];
if(!isset($id_to_rows[$value_id]))
{
$id_to_rows[$value_id] = array();
}
else
{
if(!isset($duplicate_ids[$value_id]))
{
$duplicate_ids[$value_id] = $id_to_rows[$value_id];
}
$duplicate_ids[$value_id][] = $row;
}
if(!isset($name_to_rows[$value_name]))
{
$name_to_rows[$value_name] = array();
}
else
{
if(!isset($duplicate_names[$value_name]))
{
$duplicate_names[$value_name] = $name_to_rows[$value_name];
}
$duplicate_names[$value_name][] = $row;
}
$id_to_rows[$value_id][] = $row;
$name_to_rows[$value_name][] = $row;
}
echo 'Duplicates:';
echo '<br>';
$shown_rows = array();
foreach($duplicate_ids as $id => $rows)
{
foreach($rows as $nr)
{
echo $id . '|' . $spout_output[$nr]['Name['.$nr.']'] . '|' . $spout_output[$nr]['Address['.$nr.']'];
echo '<br>';
$shown_rows[] = $nr;
}
}
foreach($duplicate_names as $name => $rows)
{
foreach($rows as $nr)
{
// if already shown above, skip this row
if(in_array($nr, $shown_rows))
continue;
echo $spout_output[$nr]['id['.$nr.']'] . '|' . $spout_output[$nr]['Name['.$nr.']'] . '|' . $spout_output[$nr]['Address['.$nr.']'];
echo '<br>';
$shown_rows[] = $nr;
}
}
Outputs:
Duplicates:
BX-78|XXX|YUUSATD
BX-78|AAA|FSDSDS
BX-81|XXX|DSDSDSD
I think your 'wanted output' contains an error in the address?
Anyway, with my code above I think you'll have enough mapped data to produce the output you want.
You could do something like this:
$dupes = [];
$current = [];
foreach ($array as $index => $entry) {
$idKey = "id[$index]";
$nameKey = "Name[$index]";
if (array_key_exists($entry[$idKey], $current)) {
$dupes[] = [$entry, $current[$entry[$idKey]]];
}
elseif (array_key_exists($entry[$nameKey], $current)) {
$dupes[] = [$entry, $current[$entry[$nameKey]]];
}
else {
$current[$entry[$idKey]] = $current[$entry[$nameKey]] = $entry;
}
}
print_r($dupes);
Which results in an array containing each set of duplicates (array of arrays):
Array
(
[0] => Array
(
[0] => Array
(
[id[3]] => BX-78
[Name[3]] => AAA
[Address[3]] => FSDSDS
)
[1] => Array
(
[id[0]] => BX-78
[Name[0]] => XXX
[Address[0]] => YUUSATD
)
)
[1] => Array
(
[0] => Array
(
[id[4]] => BX-81
[Name[4]] => XXX
[Address[4]] => DSDSDSD
)
[1] => Array
(
[id[0]] => BX-78
[Name[0]] => XXX
[Address[0]] => YUUSATD
)
)
)
Demo here: https://3v4l.org/JAtNU
In case someone of you are searching unique values by key.
function unique_multidim_array($array, $key) {
$temp_array = array();
$i = 0;
$key_array = array();
foreach($array as $val) {
if (!in_array($val[$key], $key_array)) {
$key_array[$i] = $val[$key];
$temp_array[$i] = $val;
}
$i++;
}
return $temp_array;
}
This function just takes multidimensional array and key value of field you need.
Then takes value of given array one by one (smaller arrays).
Then traverses given array and looking if taken key-value pair matches with given key.
After that if taken key-value pair matches with given key function just inserts smaller array in temporary array (array with unique values).
Don't forget to increment indexes of arrays ($i).
Then return array you got (with unique values) after function ends work.
I have a json array like below. I need to get the index into a new array, how is this possible? Arrays are my weakness for some reason just cant grasp them. I can easily get id value, but cannot get the index (e.g 11111111). Any help would be appreciated.
Update please see the revised, my fault for not including the full multi dimensional array.
Below only outputs one result where I need all results.
<?php
$json = '[{
"11111111": {
"id": "val_somevalue5555",
"customer": {
"32312": {
"name": "jane doe"
}
}
},
"2222222": {
"id": "val_somevalue25",
"customer": {
"32312234": {
"name": "jane doe"
}
}
}
}]';
$jsonarr = json_decode($json, true);
$newarr = [];
foreach($jsonarr as $value)
{
$key = key($value);
$newarr[] = ['key' => $key, 'id' => $value[$key]['id']];
}
var_dump($newarr);
expected looped output
key 11111111
id val_somevalue5555
... looped.
You can create an array of the keys of an existing array using the array_keys() function
http://php.net/manual/en/function.array-keys.php
If you don't want the keys in a separate array, and instead just want to access them directly, when you are doing a 'foreach' loop of an array, you can choose to assign a variable to the current key by doing
foreach($jsonarr as $key => $value){...}
Because your original array is actually multidimensional (each $key has a $value that is also stored as an array of "id": "value") - this means taking one more step to get the value of key 'id':
foreach($jsonarr as $key => $value){
$newarray[] = ['key' => $key, 'id' => $value['id'];
}
you can use array_keys() or key() with a foreach loop for this(DEMO):
$newarr = [];
foreach($jsonarr as $value)
{
//$key = array_keys($value)[0];
$key = key($value);
$newarr[] = ['key' => $key, 'id' => $value[$key]['id']];
}
var_dump($newarr);
Output:
array(2) {
[0]=>
array(2) {
["key"]=>
int(11111111)
["id"]=>
string(17) "val_somevalue5555"
}
[1]=>
array(2) {
["key"]=>
int(2222222)
["id"]=>
string(15) "val_somevalue25"
}
}
Edit: With the updated json, you can use the following way, using 2 foreach loops (DEMO):
$newarr = [];
foreach($jsonarr as $json)
{
foreach($json as $key => $value)
{
$newarr[] = ['key' => $key, 'id' => $value['id']];
}
}
PHP supports a slightly different foreach syntax that extracts both the array key and the array value:
foreach ( $jsonarr as $key => $value ) {
$newarr[] = ['key' => $key, 'id' => $value];
}
Use this if you need the key ("11111111" and "2222222" in your example).
<?php
$json = '[{
"11111111": {
"id": "val_somevalue5555"
}
},
{
"2222222": {
"id": "val_somevalue25"
}
}
]';
$jsonarr = json_decode($json, true);
$newarr = [];
foreach($jsonarr as $key => $value) {
$newarr[] = ['key' => key($value), 'id' => current($value)['id']];
}
foreach($newarr as $key) {
echo 'key '.$key['key'] . PHP_EOL;
echo 'id '.$key['id'] . PHP_EOL;
}
If you remove what looks like embedded components in the $json string (otherwise it won't parse) then var_export the output of json_decode() you'll get this:
array (
0 => array (
11111111 => array (
'id' => 'val_somevalue5555',
),
),
1 => array (
2222222 => array (
'id' => 'val_somevalue25',
),
),
)
You have a double-nested array, hence...
foreach ($jsonarr as $obj) {
foreach ($obj as $name=>$value) {
print "$name = $value[id]\n";
break;
}
}
or you can reference the elements directly:
print $jsonarr[0]['11111111']['id'];
First, you are not accessing the deep enough before iterating.
If you call var_export($jsonarr); you will see:
array ( // an indexed array of subarrays
0 =>
array ( // an associative array of subarrays, access via [0] syntax (or a foreach loop that only iterates once)
11111111 => // this is the subarray's key that you want
array (
'id' => 'val_somevalue5555', // this is the value you seek from the id element of 1111111's subarray
'customer' =>
array (
32312 =>
array (
'name' => 'jane doe',
),
),
),
2222222 => // this is the subarray's key that you want
array (
'id' => 'val_somevalue25', // this is the value you seek from the id element of 2222222's subarray
'customer' =>
array (
32312234 =>
array (
'name' => 'jane doe',
),
),
),
),
)
Code: (Demo)
$jsonarr = json_decode($json, true);
$result=[];
// vvvv-avoid a function call (key()) on each iteration by declaring here
foreach($jsonarr[0] as $key=>$subarray){
// ^^^-drill down into the first level (use another foreach loop if there may be more than one)
$result[]=['key'=>$key,'id'=>$subarray['id']];
}
var_export($result);
Output:
array (
0 =>
array (
'key' => 11111111,
'id' => 'val_somevalue5555',
),
1 =>
array (
'key' => 2222222,
'id' => 'val_somevalue25',
),
)
p.s. If $jsonarr has more than one element in its first level, you should use a foreach() loop like this:
foreach($jsonarr as $array1){
foreach($array1 as $key=>$array2){
$result[]=['key'=>$key,'id'=>$array2['id']];
}
}
I have array multidimensional code like this:
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
unset($array[$eaten]);
and what i need is to delete 'grape' from the array because 'grape' already eaten. how to fix my code to unset the 'grape'?
and my question number two, if it can be unset, is there a way to unset multi value like
unset($array,['grape','orange']);
thanks for help..
You can remove eaten element by following way. Use array_search() you can find key at the position of your eaten element.
Here below code shows that in any multidimensional array you can call given function.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
$array = removeElement($array, $eaten);
function removeElement($data_arr, $eaten)
{
foreach($data_arr as $k => $single)
{
if (count($single) != count($single, COUNT_RECURSIVE))
{
$data_arr[$k] = removeElement($single, $eaten);
}
else
{
if(($key = array_search($eaten, $single)) !== false)
{
unset($data_arr[$k][$key]);
}
}
}
return $data_arr;
}
P.S. Please note that you can unset() multiple elements in single call. But the way you are using unset is wrong.
Instead of using unset() i suggest you to create a new Array after removal of required value benefit is that, your original array will remain same, you can use it further:
Example:
// your array
$yourArr = array(
'fruits'=>array('apple','orange','grape', 'pineaple'),
'vegetables'=>array('tomato', 'potato')
);
// remove array that you need
$removeArr = array('grape','tomato');
$newArr = array();
foreach ($yourArr as $key => $value) {
foreach ($value as $finalVal) {
if(!in_array($finalVal, $removeArr)){ // check if available in removal array
$newArr[$key][] = $finalVal;
}
}
}
echo "<pre>";
print_r($newArr);
Result:
Array
(
[fruits] => Array
(
[0] => apple
[1] => orange
[2] => pineaple
)
[vegetables] => Array
(
[0] => potato
)
)
Explanation:
Using this array array('grape','tomato'); which will remove the value that you define in this array.
This is how I would do it.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$unset_item = 'grape';
$array = array_map(function($items) use ($unset_item) {
$found = array_search($unset_item, $items);
if($found){
unset($items[$found]);
}
return $items;
}, $array);
I have a array like this:
Array
(
[0] => Chat Show
[1] => Non-fiction
[2] => Inspirational
)
And i am trying to get this format:
"genres": [
{
"name": "Chat Show"
},
{
"name": "Non-fiction"
},
{
"name": "Inspirational"
}
]
but i get something like this:
genres": [
"Chat Show",
"Non-fiction",
"Inspirational"
]
This is what i am doing:
while($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"}]}
*/