How to convert array to object

Question

First, I have tried to find solution within the source here but couldn't find what I am looking so posting as a new question. Thanks for your help

I want to convert Array to Object. Here is what I am getting output

Array
(
    [0] => stdClass Object
        (
            [id] => 1
            [username] => robustsolver
            [first_name] => John
            [last_name] => Smith
        )

    [1] => stdClass Object
        (
            [id] => 2
            [username] => pickypacker
            [first_name] => Peter
            [last_name] => Packer
        )

)

So if I want any column for all users than I have to write code $users[0]->first_name; which gives me only one item. But what I am looking is to use $users->first_name and this should return an array of all user's column (here is first_name)

Hope I have explain in better way. :S

so you have an array of objects and you want to convert it to an object of arrays, is that right? — Ibrahim.I
– Ibrahim.I, Commented Jun 11, 2014 at 7:44
@aneesh getting error Message: get_object_vars() expects parameter 1 to be object, array given — Code Lover
– Code Lover, Commented Jun 11, 2014 at 7:45
@Ibrahim.I Yes, that's what I am trying to do so. Could you help me please? And yeah thank to learn me the terminology for such array. Like an array of objects I was confused how to say it in words. Thanks again.. :) — Code Lover
– Code Lover, Commented Jun 11, 2014 at 7:45
first you know the structure of your objects, right? I mean you know all the properties of the object — Ibrahim.I
– Ibrahim.I, Commented Jun 11, 2014 at 7:48

wrousseau · Accepted Answer · 2014-06-11 07:52:27Z

1

You can try this where $arr is your array:

function filter_callback($element) {
    return $element->first_name;
}
$result= array_map('filter_callback', $arr);

From a quick test, this seems to work. It keeps objects of the array without your wanted property but its value is set to NULL. Not sure if that's what you want but you can edit the filter_callback to remove such elements.

answered Jun 11, 2014 at 7:52

wrousseau

3113 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

wrousseau Over a year ago

Yeah I think I just figured the question out... Not sure if this is doable with a single array_map call though...

Code Lover Over a year ago

I got the output as an array. Let me try others too.. Thanks

Code Lover Over a year ago

Is there any way to set column name first_name as a parameter somewhere so I can set as per my need?

DarkSide · Accepted Answer · 2014-06-11 07:50:23Z

1

Maybe something like this will work (not tested):

$arr = array(...); // array of objects (in)
$obj = new Object; // object of arrays (out)

foreach($arr as $a) {
    foreach(get_object_vars($a) as $k=>$v) {
        if(!property_exists($obj, $k)) {
            $obj->{$k} = array();
        }
        $obj->{$k}[] = $v;
    }
}

answered Jun 11, 2014 at 7:50

DarkSide

3,7191 gold badge28 silver badges36 bronze badges

Comments

Ibrahim.I · Accepted Answer · 2014-06-11 07:56:19Z

1

consider defining a new class:

class User_objects
{
    public $first_name;
    public $username;
    public $last_name;

    public function __construct()
    {
        $this->first_name = array();
        $this->username = array();
        $this->last_name = array();
    }
}

then: consider $array_of_objects to be your array of objects (input).

$users = new User_objects();

foreach ($array_of_objects as $object)
{
     $users->first_name[] = $object->first_name; // append to array
     $users->last_name[] = $object->last_name;
     $users->username[] = $object->username;
}

then you can get your array from $users->first_name

answered Jun 11, 2014 at 7:56

Ibrahim.I

3291 gold badge4 silver badges18 bronze badges

Comments

Ja͢ck · Accepted Answer · 2014-06-11 08:14:03Z

1

You can write a simple helper function that will aid in the columns you wish to select:

function prop_selector($prop)
{
    return function($item) use ($prop) {
        return $item->{$prop};
    };
}

$first_names = array_map(prop_selector('first_name'), $users);
$last_names = array_map(prop_selector('last_name'), $users);

edited Jun 11, 2014 at 8:14

answered Jun 11, 2014 at 7:57

Ja͢ck

174k39 gold badges269 silver badges317 bronze badges

4 Comments

Code Lover Over a year ago

Its giving Message: Undefined variable: prop any idea

Ja͢ck Over a year ago

@JatinSoni I thought you wanted to have the property name as a parameter, so a bit surprised to see you've accepted the other answer instead ...

Code Lover Over a year ago

Not actually, sorry about the confusion. but I wanted an object as a return value with having ability to set column name as parameter if needed.

Ja͢ck Over a year ago

@JatinSoni Then it seems that DarkSide's answer is what you want.

Collectives™ on Stack Overflow

How to convert array to object

4 Answers 4

3 Comments

Comments

Comments

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

3 Comments

Comments

Comments

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related