This might seem super easy but to me its not, I have the following method:
public function addRadioButtonTab($groupName, $radioButtonTab)
{
$radioButtonTab = new RadioButtonTab($radioButtonTab);
$this->radioButtonTabs[][$groupName] = $groupName;
$this->radioButtonTabs[][] = $radioButtonTab;
}
I want to push the $radioButtonTab into the same array that contains the key: $groupName.
Right now I get two separate arrays, one with the key=>value and one with the object.
instead of looping and doing complex things try this:
public function addRadioButtonTab($groupName, $radioButtonTab)
{
$radioButtonTab = new RadioButtonTab($radioButtonTab);
$this->radioButtonTabs[][$groupName] = array($groupName, $radioButtonTab);
}
You should make an array of the values you want first, then append that to $this->radioButtonTabs.
public function addRadioButtonTab($groupName, $radioButtonTab)
{
$radioButtonTab = new RadioButtonTab($radioButtonTab);
// Just append arrays into the main array
$this->radioButtonTabs[] = array('group_name' => $groupName, $radioButtonTab);
// Or if you want your array to use `$groupName` as a key
$this->radioButtonTabs[$groupName] = array('group_name' => $groupName, $radioButtonTab)
}
Related
I have a class with method add() that accepts strings and arrays. I need to have an array with all users, but I cannot seem to get it. All I get is multiple arrays with all users. How could I merge those arrays into one?
class Users {
function add($stringOrArray) {
$arr = array();
if(is_array($stringOrArray)) {
$arr = $stringOrArray;
} else if(is_string($stringOrArray)) {
$arr[] = $stringOrArray;
} else {
echo('errrrror');
}
print_r($arr);
}
When I use this test:
public function testOne() {
$users = new Users();
$users->add('Terrell Irving');
$users->add('Magdalen Sara Tanner');
$users->add('Chad Niles');
$users->add(['Mervin Spearing', 'Dean Willoughby', 'David Prescott']);
This is what I get, multiple arrays but I need one array.
Array
(
[0] => Terrell Irving
)
Array
(
[0] => Magdalen Sara Tanner
)
Array
(
[0] => Chad Niles
)
Array
(
[0] => Mervin Spearing
[1] => Dean Willoughby
[2] => David Prescott
)
You can cut a lot of unnecessary bloat from your method.
You can cast ALL incoming data to array type explicitly. This will convert a string into an array containing a single element. If the variable is already an array, nothing will change about the value.
Use the spread operator (...) to perform a variadic push into the class property.
Code: (Demo)
class Users
{
public $listOfUsers = [];
function add($stringOrArray): void
{
array_push($this->listOfUsers, ...(array)$stringOrArray);
}
}
$users = new Users;
$users->add('Terrell Irving');
$users->add(['Magdalen Sara Tanner', 'Chad Niles']);
$users->add(['Mervin Spearing']);
var_export($users->listOfUsers);
Output:
array (
0 => 'Terrell Irving',
1 => 'Magdalen Sara Tanner',
2 => 'Chad Niles',
3 => 'Mervin Spearing',
)
All you need is to store the added users in a class property, for example $listOfUsers.
If adding the array you use the array_merge() function otherwise just add new user at the end of indexed array.
<?php
class Users {
// here will be all the users stored
public $listOfUsers = array();
function add($stringOrArray) {
//$arr = array();
if(is_array($stringOrArray)) {
// merge two arrays - could create duplicate records
$this->listOfUsers = array_merge($this->listOfUsers, $stringOrArray);
} else if(is_string($stringOrArray)) {
// simply add new item into the array
$this->listOfUsers[] = $stringOrArray;
} else {
echo('errrrror');
}
print_r($this->listOfUsers);
}
}
In your example you are storing the data locally within the method add() and it is not kept for future usage. This behavior is corrected using the class property $listOfUsers that can be accesed using $this->listOfUsers within the class object and if needed outside of the class.
In my very simple Laravel livewire component i have an array and when i try to add another data into that by clicking on a simple for example div i get fresh array with the last inserted data into that and i cant keep this array reference to append something data into that
<div wire:click="addNewSize"></div>
class SellerStoreNewProductComponent extends Component
{
public array $productSizes=[];
//...
public function addNewSize()
{
/* SOLUTION ONE */
//$this->productSizes[] = $this->productSizes + [str::random(10) => str::random(10)];
/* SOLUTION TWO */
//$this->productSizes[][]=array_push($this->productSizes, [str::random(10) => str::random(10)]);
/* SOLUTION THREE */
//array_push($this->productSizes, [str::random(10) => str::random(10)]);
dd($this->productSizes);
}
}
thanks in advance
If you're looking to add a key value pair to an existing array, you most likely want to use array_merge rather than array_push.
array_merge combines two arrays into a single array whereas array_push adds elements to an existing array.
public function addNewSize()
{
$this->productSizes = array_merge(
$this->productSizes, [Str::random(10) => Str::random(10)]
);
}
your current approaches will add a new index with new array data (previous value plus new value). so you just have to add new index to the array.
$this->productSizes['myKey'] = "myValue";
I'm trying to get Count of a table called TestRunList that has the foreign key the same as another table called Testrun meaning i want to get count of how many testrunlist that single testrun has in the same page i did a forloop to get testrun id for each testrunlist but it didn't seem to work i get this error
Cannot use object of type stdClass as array
heres my Code in the controller
$data = DB::table('TestRun')->get();
$runs=array();
for ($i=0;$i<sizeof($data);$i++)
{
$testrunID=$data[$i]['TestRunID'];
$Testrunlist=TestRunList::where('test_run_id',$testrunID)->count();
$runs[$i]=[
'Countruns'=>$Testrunlist
];
}
return view('management.testrun.testrun-list')
->with('data',$data)
->with('runs', $runs);
$data is a Collection, you can't access using array syntax
$data = DB::table('TestRun')->get();
$runs = [];
$data->each(function ($row) use ($runs) {
$runs[] = [
'Countruns' => TestRunList::where('test_run_id',$row-> TestRunID)->count()
];
});
return view('management.testrun.testrun-list')
->with('data',$data)
->with('runs', $runs);
Always use
print_r($data);
if it's object run echo $data->username if array run echo $data['username'];
So you know what type of data you're dealing with.
I'm attempting to create an array of objects in php and was curious how I would go about that. Any help would be great, thanks!
Here is the class that will be contained in the array
<?php
class hoteldetails {
private $hotelinfo;
private $price;
public function sethotelinfo($hotelinfo){
$this->hotelinfo=$hotelinfo;
}
public function setprice($price){
$this->price=$price;
}
public function gethotelinfo(){
return $hotelinfo;
}
public function getprice(){
return $price;
}
}
And here is what I am attempting to do-
<?PHP
include 'file.php';
$hotelsdetail=array();
$hotelsdetail[0]=new hoteldetails();
$hotelsdetail[0].sethotelinfo($rs);
$hotelsdetail[0].setprice('150');
?>
The class attempting to create the array doesn't compile but is just a best guess as to how I can do this. Thanks again
What you should probably do is:
$hotelsDetail = array();
$details = new HotelDetails();
$details->setHotelInfo($rs);
$details->setPrice('150');
// assign it to the array here; you don't need the [0] index then
$hotelsDetail[] = $details;
In your specific case, the issue is that you should use ->, not .. The period isn't used in PHP to access attributes or methods of a class:
$hotelsdetail[0] = new hoteldetails();
$hotelsdetail[0]->sethotelinfo($rs);
$hotelsdetail[0]->setprice('150');
Note that I capitalized the class, object, and function names properly. Writing everything in lowercase is not considered good style.
As a side note, why is your price a string? It should be a number, really, if you ever want to do proper calculations with it.
You should append to your array, not assign to index zero.
$hotelsdetail = array();
$hotelsdetail[] = new hoteldetails();
This will append the object to the end of the array.
$hotelsdetail = array();
$hotelsdetail[] = new hoteldetails();
$hotelsdetail[] = new hoteldetails();
$hotelsdetail[] = new hoteldetails();
This would create an array with three objects, appending each one successively.
Additionally, to correctly access an objects properties, you should use the -> operator.
$hotelsdetail[0]->sethotelinfo($rs);
$hotelsdetail[0]->setprice('150');
You can get the array of object by encoding it into json and decoding it with $assoc flag as FALSE in json_decode() function.
See the following example:
$attachment_ids = array();
$attachment_ids[0]['attach_id'] = 'test';
$attachment_ids[1]['attach_id'] = 'test1';
$attachment_ids[2]['attach_id'] = 'test2';
$attachment_ids = json_encode($attachment_ids);
$attachment_ids = json_decode($attachment_ids, FALSE);
print_r($attachment_ids);
It would render an array of objects.
output:
Array
(
[0] => stdClass Object
(
[attach_id] => test
)
[1] => stdClass Object
(
[attach_id] => test1
)
[2] => stdClass Object
(
[attach_id] => test2
)
)
Storing an array submitted from forms stores elements with null values. Is there a way to store only non null fields into the php array?
$_SESSION['items'] = $_POST['items'];
is my current code.
You should take a look at array_filter(). I think it is exactly what you are looking for.
$_SESSION['items'] = array_filter($_POST['items']);
# Cycle through each item in our array
foreach ($_POST['items'] as $key => $value) {
# If the item is NOT empty
if (!empty($value))
# Add our item into our SESSION array
$_SESSION['items'][$key] = $value;
}
Like #Till Theis says, array_filter is definitely the way to go. You can either use it directly, like so:
$_SESSION['items'] = array_filter($_POST['items']);
Which will give you all elements of the array which does not evaluate to false. I.E. you'll filter out both NULL, 0, false etc.
You can also pass a callback function to create custom filtering, like so:
abstract class Util {
public static function filterNull ($value) {
return isset($value);
}
}
$_SESSION['items'] = array_filter($_POST['items'], array('Util', 'filterNull'));
This will call the filterNull-method of the Util class for each element in the items-array, and if they are set (see language construct isset()), then they are kept in the resulting array.