PHP unique array by value?

Question

I have an array in PHP that looks like this:

  [0]=>
       array(2) {
           [\"name\"]=>
              string(9) \"My_item\"
           [\"url\"]         


        

Answer 1

function unique_multidim_array($array, $key) { 
            $temp_array = array(); 
            $i = 0; 
            $key_array = array(); 

            foreach($array as $val) { 
                if (!in_array($val[$key], $key_array)) { 
                    $key_array[$i] = $val[$key]; 
                    $temp_array[$i] = $val; 
                } 
                $i++; 
            } 
            return $temp_array; 
        } 
$result = unique_multidim_array($visitors,'ip');