PHP 8.0.24 Released!

array_values

(PHP 4, PHP 5, PHP 7, PHP 8)

array_valuesReturn all the values of an array

Description

array_values(array $array): array

array_values() returns all the values from the array and indexes the array numerically.

Parameters

array

The array.

Return Values

Returns an indexed array of values.

Examples

Example #1 array_values() example

<?php
$array 
= array("size" => "XL""color" => "gold");
print_r(array_values($array));
?>

The above example will output:

Array
(
    [0] => XL
    [1] => gold
)

See Also

  • array_keys() - Return all the keys or a subset of the keys of an array
  • array_combine() - Creates an array by using one array for keys and another for its values

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User Contributed Notes 6 notes

up
109
biziclop at vipmail dot hu
8 years ago
Remember, array_values() will ignore your beautiful numeric indexes, it will renumber them according tho the 'foreach' ordering:

<?php
$a
= array(
3 => 11,
1 => 22,
2 => 33,
);
$a[0] = 44;

print_r( array_values( $a ));
==>
Array(
  [
0] => 11
 
[1] => 22
 
[2] => 33
 
[3] => 44
)
?>
up
11
nopy at users dot sourceforge dot net
18 years ago
Just a warning that re-indexing an array by array_values() may cause you to reach the memory limit unexpectly.

For example, if your PHP momory_limits is 8MB,
and says there's a BIG array $bigArray which allocate 5MB of memory.

Doing this will cause PHP exceeds the momory limits:

<?php
  $bigArray
= array_values( $bigArray );
?>

It's because array_values() does not re-index $bigArray directly,
it just re-index it into another array, and assign to itself later.
up
10
abimaelrc
11 years ago
This is another way to get value from a multidimensional array, but for versions of php >= 5.3.x
<?php
/**
* Get all values from specific key in a multidimensional array
*
* @param $key string
* @param $arr array
* @return null|string|array
*/
function array_value_recursive($key, array $arr){
   
$val = array();
   
array_walk_recursive($arr, function($v, $k) use($key, &$val){
        if(
$k == $key) array_push($val, $v);
    });
    return
count($val) > 1 ? $val : array_pop($val);
}

$arr = array(
   
'foo' => 'foo',
   
'bar' => array(
       
'baz' => 'baz',
       
'candy' => 'candy',
       
'vegetable' => array(
           
'carrot' => 'carrot',
        )
    ),
   
'vegetable' => array(
       
'carrot' => 'carrot2',
    ),
   
'fruits' => 'fruits',
);

var_dump(array_value_recursive('carrot', $arr)); // array(2) { [0]=> string(6) "carrot" [1]=> string(7) "carrot2" }
var_dump(array_value_recursive('apple', $arr)); // null
var_dump(array_value_recursive('baz', $arr)); // string(3) "baz"
var_dump(array_value_recursive('candy', $arr)); // string(5) "candy"
var_dump(array_value_recursive('pear', $arr)); // null
?>
up
3
bluej100 at gmail dot com
15 years ago
Most of the array_flatten functions don't allow preservation of keys. Mine allows preserve, don't preserve, and preserve only strings (default).

<?
// recursively reduces deep arrays to single-dimensional arrays
// $preserve_keys: (0=>never, 1=>strings, 2=>always)
function array_flatten($array, $preserve_keys = 1, &$newArray = Array()) {
  foreach (
$array as $key => $child) {
    if (
is_array($child)) {
     
$newArray =& array_flatten($child, $preserve_keys, $newArray);
    } elseif (
$preserve_keys + is_string($key) > 1) {
     
$newArray[$key] = $child;
    } else {
     
$newArray[] = $child;
    }
  }
  return
$newArray;
}

// Tests

$array = Array(
 
'A' => Array(
   
1 => 'foo',
   
2 => Array(
     
'a' => 'bar'
   
)
  ),
 
'B' => 'baz'
);

echo
'var_dump($array);'."\n";
var_dump($array);
echo
'var_dump(array_flatten($array, 0));'."\n";
var_dump(array_flatten($array, 0));
echo
'var_dump(array_flatten($array, 1));'."\n";
var_dump(array_flatten($array, 1));
echo
'var_dump(array_flatten($array, 2));'."\n";
var_dump(array_flatten($array, 2));
?>
up
2
Anonymous
18 years ago
<?php
/**
   flatten an arbitrarily deep multidimensional array
   into a list of its scalar values
   (may be inefficient for large structures)
   (will infinite recurse on self-referential structures)
   (could be extended to handle objects)
*/
function array_values_recursive($ary)
{
  
$lst = array();
   foreach(
array_keys($ary) as $k ){
     
$v = $ary[$k];
      if (
is_scalar($v)) {
        
$lst[] = $v;
      } elseif (
is_array($v)) {
        
$lst = array_merge( $lst,
           
array_values_recursive($v)
         );
      }
   }
   return
$lst;
}
?>

code till dawn!  -mark meves!
up
0
chrysb at gmail dot com
14 years ago
If you are looking for a way to count the total number of times a specific value appears in array, use this function:

<?php
function array_value_count ($match, $array)
{
   
$count = 0;
   
    foreach (
$array as $key => $value)
    {
        if (
$value == $match)
        {
           
$count++;
        }
    }
   
    return
$count;
}
?>

This should really be a native function of PHP.
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