PHP - Concatenating 2 objects

Question

I have 2 objects.

Here is the output of the objects when I print them out with print_r method of the PHP.

Oject #1;

stdClass Object ( [id] => 1 [portal_id] => 1 [name=> NEVZAT )

Object #2;

stdClass Object ( [surname] => YILMAZ)

I want to concatenate these 2 objects to each other so at the end of the process I need an Object which contains all of the variables of the 2 objects;

stdClass Object ( [id] => 1 [portal_id] => 1 [name=> NEVZAT [surname] => YILMAZ )

This question has already asked here; http://stackoverflow.com/questions/455700/what-is-the-best-method-to-merge-two-php-objects — Baran, Jun 05 '12 at 10:16

score 11 · Accepted Answer · answered Jun 05 '12 at 09:29

11

A simple way would be to temporarily cast the objects to arrays, merge those arrays, then case the resulting array back to a stdClass object.

$merged = (object) array_merge((array) $object_a, (array) $object_b);

answered Jun 05 '12 at 09:29

salathe

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looks OK, thank you, but I want to know if this is the only way. Because it may cause some performance issues, there are lots of type castings. – WhoSayIn Jun 05 '12 at 10:18
1

Of course it is not the **only** way. Re. performance issues, my only advice would be to worry about performance when performance becomes an issue. – salathe Jun 05 '12 at 11:06

score 6 · Answer 2 · answered Jun 05 '12 at 09:31

6

Just copy over the attributes like so:

// assume $o1 and $o2 are your objects
// we copy $o1 attributes to $o2
foreach ($o1 as $attr => $value) {
        $o2->{$attr} = $value;
}

answered Jun 05 '12 at 09:31

Ja͢ck

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KAZI SAYED HOSSAIN · Answer 3 · 2022-11-05T13:49:40.220

<?php
        class MergeObj {
            // Empty class
        }
         
        $objectA = new MergeObj();
        $objectA->a = 1;
        $objectA->b = 2;
        $objectA->d = 3;
         
        $objectB = new MergeObj();
        $objectB->d = 4;
        $objectB->e = 5;
        $objectB->f = 6;
         
        $obj_merged = (object) array_merge((array) $objectA,(array) $objectB);
                 
        print_r($obj_merged); 
?>

Output:

stdClass Object
(
    [a] => 1
    [b] => 2
    [d] => 4
    [e] => 5
    [f] => 6
)

Demo Link: https://onecompiler.com/php/3yn3amgjv

PHP - Concatenating 2 objects

3 Answers3