Get all values from a multidimensional array as a flat , indexed array [duplicate]

Question

I have this array:

  array(3) {
  [0]=>
  array(3) {
    [0]=>
    array(1) {
      [0]=>
      string(2) "14"
    }
    [1]=>
    string(2) "12"
    [2]=>
    string(2) "13"
  }
  [1]=>
  string(2) "10"
  [2]=>
  string(2) "11"
}

is there some PHP function with output all values in one string. Like this:

    array(5){
    [0]=>
    string(2) "14"

    [1]=>
    string(2) "12"

    [2]=>
    string(2) "13"

     [3]=>
    string(2) "11"
}

Please no more :O Loop through entire array and fetch string type data in new 1D array. — Dejan Marjanović
– Dejan Marjanović, Commented Mar 27, 2011 at 15:42

phihag · Accepted Answer · 2011-03-27 16:12:59Z

2

You could use array_walk_recursive:

$output = array();
array_walk_recursive($inputArray,
   create_function('$val, $key, $obj', 'array_push($obj, $val);'), &output)

edited Mar 27, 2011 at 16:12

phihag

289k75 gold badges473 silver badges488 bronze badges

answered Mar 27, 2011 at 15:48

AndyMac

8406 silver badges12 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

phihag Over a year ago

This doesn't work for me with php 5.3.3. Are you sure you can pass $output by value instead of by reference?

phihag · Accepted Answer · 2011-03-27 15:49:36Z

1

$res = array();
array_walk_recursive($ar, function($v, $k, $res) {
  $res[] = $v;
}, &$res);

answered Mar 27, 2011 at 15:49

phihag

289k75 gold badges473 silver badges488 bronze badges

3 Comments

klang Over a year ago

this only works in php 5.3, right? (confused about the use of function)

phihag Over a year ago

Before 5.3, you'd write create_function('$v, $k, $res', '$res[] = $v;');

klang Over a year ago

. the new notation is better. (still stuck at 5.2 here)

salathe · Accepted Answer · 2011-03-27 17:27:54Z

Another option is to make use of some of the SPL's iterators^1,2 and the iterator_to_array()³ function, to save yourself the work of anonymous callbacks.

$leaves = iterator_to_array(
    new RecursiveIteratorIterator(
        new RecursiveArrayIterator($array)
    ),
    FALSE
);

Refs

RecursiveArrayIterator http://php.net/recursivearrayiterator
RecursiveIteratorIterator http://php.net/recursiveiteratoriterator
iterator_to_array() http://php.net/iterator_to_array

Matthew · Accepted Answer · 2011-03-27 17:35:08Z

0

function flatten_array(array $a) 
{
   array_walk_recursive($a, function($v) use(&$r) { $r[] = $v; });
   return $r;
}

answered Mar 27, 2011 at 17:35

Matthew

48.4k11 gold badges90 silver badges101 bronze badges

Comments

Oswald · Accepted Answer · 2011-03-27 15:43:19Z

-1

No, there isn't. You will have to write your own.

answered Mar 27, 2011 at 15:43

Oswald

31.8k3 gold badges45 silver badges72 bronze badges

Comments

Shamim Hafiz - MSFT · Accepted Answer · 2011-03-27 15:45:22Z

-1

You won't get exactly what you want, but you could see array_walk_recursive.

answered Mar 27, 2011 at 15:45

Shamim Hafiz - MSFT

22.2k44 gold badges122 silver badges182 bronze badges

Collectives™ on Stack Overflow

Get all values from a multidimensional array as a flat , indexed array [duplicate]

6 Answers 6

1 Comment

3 Comments

Comments

Comments

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

1 Comment

3 Comments

Comments

Comments

Comments

Comments

Linked

Related