Using array_diff() on arrays who holds several objects [duplicate]

Question

I have two arrays. The first array holds these values.

[a] => stdClass Object
    (
        [name] => Chris
        [id] => AaKk4j0abEkJSSxYKKnss2LTZc9BmMDrYmm1TFxkIHR8PSU50OagCsl2pgJjVTm7MrkVBVcJgydJGViRU4HHClyWVm3arL4Y5cdWKyZQHtdltg
    )

[b] => stdClass Object
    (
        [name] => John
        [id] => AaL4_sWesWgGcHsd3eoBB3NDvpekzTQHE1J9zLUJs6zZPY7urzXzuhvA3uWuW0IOGiRJPznFsCIJFzZkm2_vIlSU93njnSwgiJbM1fmI9fUulw
    )

[c] => stdClass Object
    (
        [name] => James
        [id] => AaJ3g8G-nssIY7rhMq6pGMI5989ICREh7_MQ37Vre8oNuaBkO-HFgNUWcH2tZdyFwsWOv_kG4eVliss-FY_HmRFh4gmROJKkFCFKMjzatc_2iw
    )

The second array holds these values.

[d] => stdClass Object
    (
        [id] => 1003880559625244
        [name] => Aftab
    )

[e] => stdClass Object
    (
        [id] => 448636891977424
        [name] => John
    )

[f] => stdClass Object
    (
        [id] => 809530442478820
        [name] => James
    )

[g] => stdClass Object
    (
        [id] => 809530442478820
        [name] => Chris
    )

I'm trying to compare both arrays and get only the values that do not match.
For Example in this case Aftab is the one who is not present in array 1 and is unique.
I have tried doing this with array_diff() function in PHP but it is giving this error:

Catchable fatal error: Object of class stdClass could not be converted to string

all the id are unique not the names. i have to select all the names that does not match — Sppidy
– Sppidy, Commented Jun 16, 2015 at 12:04
The ID's in your example are not the same. If you have something that is unique and consistent within both record sets then just loop both arrays and replace the index with the consistent identifier and then use array_diff_key() — Mike Miller
– Mike Miller, Commented Jun 16, 2015 at 12:18

yuk · Accepted Answer · 2015-06-16 12:22:28Z

4

Use array_udiff - Computes the difference of arrays by using a callback function for data comparison. http://us.php.net/array_udiff

function compare_names($a, $b)
{
    return strcmp($a->name, $b->name);
}
$newarr = array_udiff($b, $a, 'compare_names');

edited Jun 16, 2015 at 12:22

answered Jun 16, 2015 at 12:16

yuk

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Comments

khaliq · Accepted Answer · 2015-06-16 13:21:59Z

-1

try this for multidimensional array   

 $array1 = array(
        'a' => array('name' => 'Chris', 'id' => 'AaKk4j0abEkJSSxYKKnss2LTZc9BmMDrYmm1TFxkIHR8PSU50OagCsl2pgJjVTm7MrkVBVcJgydJGViRU4HHClyWVm3arL4Y5cdWKyZQHtdltg'),
        'b' => array('name' => 'John', 'id' => 'AaL4_sWesWgGcHsd3eoBB3NDvpekzTQHE1J9zLUJs6zZPY7urzXzuhvA3uWuW0IOGiRJPznFsCIJFzZkm2_vIlSU93njnSwgiJbM1fmI9fUulw'),
        'c' => array('name' => 'James', 'id' => 'AaJ3g8G-nssIY7rhMq6pGMI5989ICREh7_MQ37Vre8oNuaBkO-HFgNUWcH2tZdyFwsWOv_kG4eVliss-FY_HmRFh4gmROJKkFCFKMjzatc_2iw')
    );

    $array2 = array(
        'd' => array('name' => 'Aftab','id'=>'1003880559625244'),
        'e' => array('name' => 'John','id'=>'448636891977424'),
        'f' => array('name' => 'James','id'=>'809530442478820'),
        'g' => array('name' => 'Chris','id'=>'809530442478820'),
    );
    $result = check_diff_multi($array1, $array2);
    print '<pre>';
    print_r($result);
    print '</pre>';
    function check_diff_multi($array1, $array2){
        $result = array();
        foreach($array1 as $key => $val) {
             if(isset($array2[$key])){
               if(is_array($val) && $array2[$key]){
                   $result[$key] = check_diff_multi($val, $array2[$key]);
               }
           } else {
               $result[$key] = $val;
           }
        }

        return $result;
    }

To get your desired output

[d] => stdClass Object ( [id] => 1003880559625244 [name] => Aftab ) 

$diff = array_udiff($array2,
$array1,
function($array2,$array1){
    return strcmp($array1["name"], $array2["name"]);
    }); 
    print_r($diff);

Output :

Array ( [d] => Array ( [name] => Aftab [id] => 1003880559625244 ) )

edited Jun 16, 2015 at 13:21

answered Jun 16, 2015 at 12:08

khaliq

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4 Comments

Sppidy Over a year ago

no brother its not working. its returning me the full second array.And these array are coming from an api

khaliq Over a year ago

what is your desired result?

Sppidy Over a year ago

[d] => stdClass Object ( [id] => 1003880559625244 [name] => Aftab )

khaliq Over a year ago

$diff = array_udiff($array2, $array1, function($array2,$array1){ 	return strcmp($array1["name"], $array2["name"]); 	});  	print_r($diff);

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