SunshinePHP Developer Conference 2015

array_values

(PHP 4, PHP 5)

array_valuesLiefert alle Werte eines Arrays

Beschreibung

array array_values ( array $array )

array_values() liefert alle Werte des Arrays array mit einem numerischen Index.

Parameter-Liste

array

Das Array.

Rückgabewerte

Liefert ein indiziertes Array von Werten zurück.

Beispiele

Beispiel #1 array_values()-Beispiel

<?php
$array 
= array("größe" => "XL""farbe" => "gold");
print_r(array_values($array));
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

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

Siehe auch

  • array_keys() - Liefert alle Schlüssel oder eine Teilmenge aller Schlüssel eines Arrays

add a note add a note

User Contributed Notes 25 notes

up
4
bluej100 at gmail dot com
7 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));
?>
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5
chrysb at gmail dot com
6 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.
up
5
abimaelrc
3 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
?>
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5
rene dot zak at post dot cz
6 years ago
<?php
$array
= array(
   
'fruit1' => 'apple',
   
'fruit2' => 'orange',
   
'fruit3' => ' ',
   
'fruit4' => ' ',
   
'fruit5' => 'apple');

    for (
$i = 0; $i count($array); $i++) {
   
$key=key($array);
   
$val=$array[$key];
    if (
$val<> ' ') {
       echo
$key ." = "$val ." <br> ";
       }
    
next($array);
    }

/*
fruit1 = apple
fruit2 = orange
fruit5 = apple
*/
?>
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2
nopy at users dot sourceforge dot net
11 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
3
aowie1 at gmail dot com
3 years ago
I needed a function that recursively went into each level of the array to order (only the indexed) arrays... and NOT flatten the whole thing.

Solution:
<?php
function array_values_recursive($arr){
       
$arr = array_values($arr);
        foreach(
$arr as $key => $val)
            if(
array_values($val) === $val)
               
$arr[$key] = array_values_recursive($val);
       
        return
$arr;
}
?>
up
1
info at djdb dot be
1 year ago
<?php
$array
= array("size" => "XL", "color" => "gold","x" => " ","y" => "gold","z" => "");
print_r(array_values($array));
?>
wil result:
Array ( [0] => XL [1] => gold [2] => [3] => gold [4] => )
up
1
geo dot artemenko at gmail dot com
4 years ago
same array_flatten function, compressed and preserving keys.

function array_flatten($a,$f=array()){
  if(!$a||!is_array($a))return '';
  foreach($a as $k=>$v){
    if(is_array($v))$f=array_flatten($v,$f);
    else $f[$k]=$v;
  }
  return $f;
}
up
1
madhamster
6 years ago
Good function, if you want to acces associative array element by position:

<?php

$array
= array('fruit'=>'apple', 'juice'=>'orange', 'color'=>'lime');

$array = array_values($array);

echo
$array[2];

?>
up
1
wellandpower at hotmail.com
8 years ago
The function here flatterns an entire array and was not the behaviour I expected from a function of this name.

I expected the function to flattern every sub array so that all the values were aligned and it would return an array with the same dimensions as the imput array, but as per array_values() adjusting the keys rater than removing them.

In order to do this, you will want this function:

function array_values_recursive($array) {
   $temp = array();

   foreach ($array as $value) {
           if(is_array($value)) { $temp[] = array_values_recursive($value); }
           else { $temp[] = $value; }
   }
   return $temp;
}

Hopefully this will assist.
up
1
Anonymous
10 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
biziclop at vipmail dot hu
5 months 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
0
Certainist
1 year ago
Non-recursive simplest array_flatten.

<?php

function array_flatten($arr) {
   
$arr = array_values($arr);
    while (list(
$k,$v)=each($arr)) {
        if (
is_array($v)) {
           
array_splice($arr,$k,1,$v);
           
next($arr);
        }
    }
    return
$arr;
}

?>
up
0
karl dot rixon at gmail dot com
5 years ago
A modification of wellandpower at hotmail.com's function to perform array_values recursively. This version will only re-index numeric keys, leaving associative array indexes alone.

<?php

function array_values_recursive($array) {
   
$temp = array();
    foreach (
$array as $key => $value) {
        if (
is_numeric($key)) {
           
$temp[] = is_array($value) ? array_values_recursive($value) : $value;
        } else {
           
$temp[$key] = is_array($value) ? array_values_recursive($value) : $value;
        }
    }
    return
$temp;
}

?>
up
0
deceze at gmail dot YesThatsGoogleMail dot com
7 years ago
Please note that 'wellandpower at hotmail.com's recursive merge doesn't work. Here's the fixed version:

<?php

function array_values_recursive($array) {
  
$flat = array();

   foreach (
$array as $value) {
           if (
is_array($value)) $flat = array_merge($flat, array_values_recursive($value));
           else
$flat[] = $value;
   }
   return
$flat;
}

?>
up
-1
kapilgopinath at gmail dot com
2 years ago
extract all values from a multi dimesnsional array or a nexted json object
function array_keys_multi($array,&$vals)
{
    foreach ($array as $key => $value) {

        if (is_array($value)) {
               
            array_keys_multi($value,$vals);
       
        }else{
           
            $vals[] = $value;
        }
    }

    return $vals;
}
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-1
Yassin Ezbakhe <yassin88 at gmail dot com>
9 years ago
<?php
/**********************************************
*
*   PURPOSE: Flatten a deep multidimensional array into a list of its
*   scalar values
*
*   array array_values_recursive (array array)
*
*   WARNING: Array keys will be lost
*
*********************************************/

function array_values_recursive($array)
{
   
$arrayValues = array();

    foreach (
$array as $value)
    {
        if (
is_scalar($value) OR is_resource($value))
        {
            
$arrayValues[] = $value;
        }
        elseif (
is_array($value))
        {
            
$arrayValues = array_merge($arrayValues, array_values_recursive($value));
        }
    }

    return
$arrayValues;
}
?>

This function is an improved and faster version of the one posted by <27-Apr-2004 09:47>
up
-1
carl at thep.lu.se
12 years ago
Indeed you can, and that's what's so great about it. I have, for instance, a function that returns the results of a database query as an array. I want to keep the order that the entries were returned in, but at the same time I want to be able to access them _either_ by the position _or_ by some other index (such as some sort of ID in the database, gotten from elsewhere). In this case, I can make the function return an array from id to [array of values], and by a simple call to array_values() this is transformed into an array indexed from 0 to count()-1. Useful.
up
-1
heber dot gentilin at gmail dot com
1 year ago
/**
* Return the new array from the offset index
*/
function array_values_from($array, $offset_index = 0) {
    if (!is_array($array))
        return null;
    $index = (int)$offset_index;
    foreach($array as $i => $value)
        $array_return[$index++] = $value;
    return $array_return;
}
up
-1
ahigerd at stratitec dot com
7 years ago
A comment on array_merge mentioned that array_splice is faster than array_merge for inserting values. This may be the case, but if your goal is instead to reindex a numeric array, array_values() is the function of choice. Performing the following functions in a 100,000-iteration loop gave me the following times: ($b is a 3-element array)

array_splice($b, count($b)) => 0.410652
$b = array_splice($b, 0) => 0.272513
array_splice($b, 3) => 0.26529
$b = array_merge($b) => 0.233582
$b = array_values($b) => 0.151298
up
-2
mailseppel at gmx dot de
12 years ago
Remember, that the following way of fetching data from a mySql-Table will do exactly the thing as carl described before: An array, which data may be accessed both by numerical and DB-ID-based Indexes:

<?php
$row
= mysql_fetch_array($db_result, $db_link);
?>

Hope I haven't misunderstood anything here.. :)
up
-2
Carsten Milkau
4 years ago
Note that in a multidimensional array, each element may be identified by a _sequence_ of keys, i.e. the keys that lead towards that element. Thus "preserving keys" may have different interpretations. Ivan's function for example creates a two-dimensional array preserving the last two keys. Other functions below create a one-dimensional array preserving the last key. For completeness, I will add a function that merges the key sequence by a given separator and a function that preserves the last n keys, where n is arbitrary.

<?php
/*
* Flattening a multi-dimensional array into a
* single-dimensional one. The resulting keys are a
* string-separated list of the original keys:
*
* a[x][y][z] becomes a[implode(sep, array(x,y,z))]
*/

function array_flatten_sep($sep, $array) {
 
$result = array();
 
$stack = array();
 
array_push($stack, array("", $array));

  while (
count($stack) > 0) {
    list(
$prefix, $array) = array_pop($stack);

    foreach (
$array as $key => $value) {
     
$new_key = $prefix . strval($key);

      if (
is_array($value))
       
array_push($stack, array($new_key . $sep, $value));
      else
       
$result[$new_key] = $value
   
}
  }

  return
$result;
}

/*
* Flattening a multi-dimensional array into an
* n-dimensional one. The last n keys of each element are
* preserved. If this results in ambiguities, results are
* undefined.
*
* a[x_1][x_2]...[x_m]  becomes  a[x_{m-n+1}]...[x_m]
*/
function array_flatten_n($array, $n) {
 
$result = array();
 
$stack = array();
 
array_push($stack, array(array(), $array));

  while (
count($stack) > 0) {
    list(
$prefix, $array) = array_pop($stack);

    foreach (
$array as $key => $value) {
      if (
is_array($value)) {
       
$new_prefix = array_values($prefix);
       
array_push($new_prefix, $key);
        if (
count($new_prefix) >= n)
         
array_shift($new_prefix);

       
array_push($stack, array($new_prefix, $value));
      } else {
       
$array = $result;
        foreach (
$prefix as $pkey) {
           if (!
is_array($array[$pkey]))
            
$array[$pkey] = array();
          
$array = $array[$pkey];
        }
       
$array[$key] = $value;
      }
    }
  }

  return
$result;
}
?>
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-3
warmo_at_o2_dot_pl
7 years ago
@Yassin Ezbakhe <yassin88 at gmail dot com>
When we have to flatten multidimensional array of strings or numbers this method could be much faster.
Inconvenience of this method is, that its speed depends on size of strings/numbers, which array contains - bigger strings, lower efficiency.
Conclusion: Use this method for small amount of data in arrays (less than 500B per element in my case) which have many dimensions, in other case, use Yassin Ezbakhe method.

<?php

function md_implode($array, $glue = '')
{
    if (
is_array ($array))
    {
       
$output = '';
        foreach (
$array as $v)
        {
           
$output .= md_implode($v, $glue);
        }
        return
$output;
    }
    else
    {
        return
$array.$glue;
    }
}

function
md_array_flatten($md_array)
{
   
$flat_array = explode ('#|#',md_implode($md_array,'#|#')); // "#|#" is a sample delimiter
   
array_pop($flat_array); // to remove last empty element
   
return $flat_array;
}

//Usage:
$flat_array = md_array_flatten($some_md_array)

?>
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-4
a dot ross at amdev dot eu
3 years ago
<?php
/**
* Flattens an array, or returns FALSE on fail.
*/
function array_flatten($array) {
  if (!
is_array($array)) {
    return
FALSE;
  }
 
$result = array();
  foreach (
$array as $key => $value) {
    if (
is_array($value)) {
     
$result = array_merge($result, array_flatten($value));
    }
    else {
     
$result[$key] = $value;
    }
  }
  return
$result;
}
?>
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-5
wizglins at gmx dot ch
8 years ago
In case you want to replace all keys in multiarrays by integers starting at 0, the following function might help.

<?php

function numerieren($array)
{
$array_v = array_values($array);
$count_v = count($array_v);

for (
$i=0; $i<$count_v; $i++)
  if (
is_array($array_v[$i]))
   
$array_v[$i] = numerieren($array_v[$i]);
return
$array_v;
}

?>
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