PHP 5.6.0RC3 is available

array_fill_keys

(PHP 5 >= 5.2.0)

array_fill_keysPreenche um array com valores, especificando chaves

Descrição

array array_fill_keys ( array $keys , mixed $value )

Preenche um array com o valor do parâmetro value, usando os valores do array keys como chaves.

Parâmetros

keys

Array de valores que serão usados como chaves. Valores ilegais para chaves serão convertidos para string.

value

Valor para usar no preenchimento

Valor Retornado

Retorna o array preenchido

Exemplos

Exemplo #1 Exemplo da array_fill_keys()

<?php
$keys 
= array('foo'510'bar');
$a array_fill_keys($keys'banana');
print_r($a);
?>

O exemplo acima irá imprimir:

Array
(
    [foo] => banana
    [5] => banana
    [10] => banana
    [bar] => banana
)

Veja Também

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User Contributed Notes 7 notes

up
10
sergli at nigma dot ru
2 years ago
<?php
$a
= array("1");

var_dump(array_fill_keys($a, "test"));
?>

array(1) {
  [1]=>
  string(4) "test"
}

now string key "1" become an integer value 1, be careful.
up
4
atul dot kr_singh at hotmail dot com
1 year ago
If an associative array is used as the second parameter of array_fill_keys, then the associative array will be appended in all the values of the first array.
e.g.
<?php
$array1
= array(
   
"a" => "first",
   
"b" => "second",
   
"c" => "something",
   
"red"
);

$array2 = array(
   
"a" => "first",
   
"b" => "something",
   
"letsc"
);

print_r(array_fill_keys($array1, $array2));
?>

The output will be
Array(
    [first] => Array(
        [a] => first,
        [b] => something,
        [0] => letsc
    ),
    [second] => Array(
        [a] => first,
        [b] => something,
        [0] => letsc
    ),
    [something] => Array(
        [a] => first,
        [b] => something,
        [0] => letsc
    ),
    [red] => Array(
        [a] => first,
        [b] => something,
        [0] => letsc
    )
)
up
1
taylanaktepe at yahoo dot com
10 days ago
$keys = array(1, 2, 3);

// Fill it with value.
$keys = array_fill_keys($keys, 'banana');
print_r($keys);

// Fill it different value.
$apples = array_fill_keys(array_keys($keys), 'apple');
print_r($apples);

// Output:
Array (
[1] => banana
[2] => banana
[3] => banana
)
Array (
[1] => apple
[2] => apple
[3] => apple
)
up
0
matrebatre
6 years ago
This function does the same as:
<?php
$array
= array_combine($keys,array_fill(0,count($keys),$value));
?>
up
0
phydeaux
6 years ago
Scratchy's version still doesn't work like the definition describes.  Here's one that can take a mixed variable as the second parameter, defaulting to an empty string if it's not specified.  Don't know if this is exactly how the function works in later versions but it's at least a lot closer.

function array_fill_keys($target, $value = '') {
    if(is_array($target)) {
        foreach($target as $key => $val) {
            $filledArray[$val] = is_array($value) ? $value[$key] : $value;
        }
    }
    return $filledArray;
}

This works for either strings or numerics, so if we have

$arr1 = array(0 => 'abc', 1 => 'def');
$arr2 = array(0 => 452, 1 => 128);
$arr3 = array(0 => 'foo', 1 => 'bar');

then

array_fill_keys($arr1,$arr2)
returns: [abc] => 452, [def] => 128

array_fill_keys($arr1,0)
returns: [abc] => 0, [def] => 0

array_fill_keys($arr2,$arr3)
returns: [452] => foo, [128] => bar

array_fill_keys($arr3,'BLAH')
returns: [foo] => BLAH, [bar] => BLAH

and array_fill_keys($arr1)
returns: [abc] =>, [def] =>
up
0
Scratchy
6 years ago
RE: bananasims at hotmail dot com

I also needed a work around to not having a new version of PHP and wanting my own keys. bananasims code doesn't like having an array as the second parameter...

Here's a slightly modified version than can handle 2 arrays as inputs:

//we want these values to be keys
$arr1 = (0 => "abc", 1 => "def");
/we want these values to be values
$arr2 = (0 => 452, 1 => 128);

function array_fill_keys($keyArray, $valueArray) {
    if(is_array($keyArray)) {
        foreach($keyArray as $key => $value) {
            $filledArray[$value] = $valueArray[$key];
        }
    }
    return $filledArray;
}

array_fill_keys($arr1, $arr2);

returns:
abc => 452, def =>128
up
-1
bananasims at hotmail dot com
7 years ago
Some of the versions do not have this function.
I try to write it myself.
You may refer to my script below

function array_fill_keys($array, $values) {
    if(is_array($array)) {
        foreach($array as $key => $value) {
            $arraydisplay[$array[$key]] = $values;
        }
    }
    return $arraydisplay;
}
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