如何在多维数组PHP中获得唯一值

Question

How to get unique values from this array and save them in the table $tab = array('one','two','tree'); ?

    array(2) {
  [0]=>
    array(1) {
     ["tagi"]=>
        string(183) "photoshop, grafika, animacje,photoshop, grafika, animacje,photoshop, grafika, animacje,photoshop, grafika, animacje,photoshop, grafika, animacje,photoshop, grafika, animacje, tutorial"
  }
  [1]=>
    array(1) {
      ["tagi"]=>
        string(38) "photoshop, grafika, animacje, poradnik"
  }
}

Answer 1

if $mainArray = array(2)... , try this code:

$mainString = "";
foreach($mainArray as $array){
  foreach($array as $row){
    $mainString .= $row;
  } $mainString .= ", ";
}

$tempArray = explode(", ", $mainString);

$finishArray = array_unique($tempArray);

Answer 2

Try array_unique . This function takes one array as argument and generates a new array with distinct values of the argument array.

Answer 3

How to remove empty lines ?

array(6) {
      [0]=>
      string(9) "photoshop"
      [1]=>
      string(7) "grafika"
      [2]=>
      string(8) "animacje"
      [12]=>
      string(8) "tutorial"
      [16]=>
      string(8) "poradnik"
      [17]=>
      string(0) ""
    }