Question

Array
(
[0] => Array
    (
        [id] => 1
        [name] => abc
        [email] => [e-mail]
        [hardware_type] => keybord
    )

[1] => Array
    (
        [id] => 1
        [name] => abc
        [email] => [e-mail]
        [hardware_type] => mouse
    )

)

and result required like this

Array
(
[0] => Array
    (
        [id] => 1
        [name] => abc
        [email] => [e-mail]
        [hardware_type] => keybord , mouse
    )

 )

Answer 1

$array1 = array(array
    (
        'id' => 1,
        'name' =>' abc',
        'email' => '[e-mail]',
        'hardware_type' => 'keybord'
    ),array
    (
        'id' => 1,
        'name' => 'abc',
        'email' => '[e-mail]',
        'hardware_type' => 'mouse'
    )
    ,array
    (
        'id' => 2,
        'name' => 'abc2',
        'email' => '[e-mail]',
        'hardware_type' => 'mouse'
    )
);

function mergarrays($array){            
        $arrayout = array();
        for($i = 0; $i < count($array); ++$i){
        foreach($array[$i] as $key => $value){
                if(array_key_exists($key,$arrayout)){
                    if( strpos($arrayout[$key],$value) == null){
                        if($arrayout[$key] != $value)
                            {
                                if(!in_array($value,explode(',',$arrayout[$key]))){
                                    $arrayout[$key] = $arrayout[$key] . ','.$value;
                                    }                           
                            }                       
                        }                   
                }else
                {
                    $arrayout[$key] = $value ;
                }
            }
        }
        return $arrayout;
        }
print_r(mergarrays($array1));