PHP - create new array with only selected keys from an existing array

PHP - create new array with only selected keys from an existing array

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PHP - create new array with only selected keys from an existing array
Tag : php , By : Cadu
Date : November 24 2020, 03:01 PM

I wish this help you Using array_flip() and array_intersect_key()
$new_array = array_intersect_key($your_array,  /* main array*/
                    array_flip( /* to be extracted */
                      array('nickname', 'first_name','last_name')

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Ruby on Rails - Get array of values from array of hash with particular order of existing keys

Tag : ruby-on-rails , By : Keniwan
Date : March 29 2020, 07:55 AM
around this issue Map all the records and then map the attributes in the order given to return the attributes' values in the specified order.
records = [
  {:age=>28, :name=>"John", :id=>1},
  {:name=>"David", :age=>20, :id=>2, :sex=>"male"}

attributes = [:id, :name, :age]
records.map do |record|
  attributes.map { |attr| record[attr] }

Flip key/value pairs from an existing array into an associate array which allows for keys with multiple values in PHP

Tag : php , By : msg
Date : March 29 2020, 07:55 AM
will help you I need to basically flip an existing associate array into another associate array. It needs to contain the keys from the previous array as values and the values of the previous array as keys. Also, it needs to be able to contain multiple values for a single key. , You didn't show an attempt but I'm bored:
foreach($array as $key => $val) {
    $result[$val][] = $key;

creating new array with additional keys based on existing multidimensional array PHP

Tag : php , By : qba73
Date : March 29 2020, 07:55 AM
wish help you to fix your issue So I got an array like: , You can do it like below:-
$final_array = array();
foreach($array as $arr){
    $final_array[] = array('id'=>$arr['ids']['id'],'firstname'=>$arr['name'],'lastname'=>'','somedata'=>'','somemoredata'=>'','ordernumber'=>$arr['number']);

Lodash create new array from selected keys

Tag : javascript , By : Debashree
Date : March 29 2020, 07:55 AM
I hope this helps . If you have an object you could use _.pick method and return a new object with specific properties.
const obj = {notes: "", name: "John", gender: "M", dob: "", age: "33", nationality: "British", notes2: "no notes", notes3: "no notes"}
const notes = _.pick(obj, ['notes', 'notes2', 'notes3']);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.js"></script>

Sort and group an array of objects by two keys and create array of grouped items with new keys

Tag : javascript , By : user167963
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I have the following array: , You can use reduce function like:
const items = [
  { name: 'john', class: 'one', section: 'a' },
  { name: 'john2', class: 'one', section: 'b' },
  { name: 'john3', class: 'one', section: 'a' },
  { name: 'john4', class: 'two', section: 'a' },
  { name: 'john5', class: 'two', section: 'b' },
  { name: 'john6', class: 'two', section: 'b' },
  { name: 'john7', class: 'three', section: 'a' },
  { name: 'john8', class: 'four', section: 'a' },
  { name: 'john9', class: 'four', section: 'b' }

const groupedItems = items.reduce((result, current) => {
  const key = current.class + current.section.toUpperCase();
  if (Array.isArray(result[key])) {
  } else {
    result[key] = [current];
  return result;
}, {});

const expectedResult = Array.from(Object.keys(groupedItems), (elem) => ({[elem]: groupedItems[elem]}));

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