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array_fill_keys

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

array_fill_keysAnahtarları belirtilen diziyi değerlerle doldurur

Açıklama

array_fill_keys(array $anahtarlar, mixed $dolgu): array

anahtarlar dizisindeki elemanlara değer olarak dolgu değerini yerleştirir.

Bağımsız Değişkenler

anahtarlar

Değerleri anahtar olarak kullanılacak dizi. Anahtar olarak geçersiz değerler string türüne dönüştürülür.

dolgu

Dolgu için kullanılacak değer.

Dönen Değerler

Doldurulmuş dizi döner.

Örnekler

Örnek 1 - array_fill_keys() örneği

<?php
$anahtarlar
= array('foo', 5, 10, 'bar');
$a = array_fill_keys($anahtarlar, 'banana');
print_r($a);
?>

Yukarıdaki örneğin çıktısı:

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

Ayrıca Bakınız

  • array_fill() - Bir diziyi değerlerle doldurur
  • array_combine() - Anahtarlar için bir dizi, değerler için ise başka bir dizi kullanarak bir ilişkisel dizi oluşturur

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User Contributed Notes 10 notes

up
66
sergli at nigma dot ru
11 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
32
atul dot kr_singh at hotmail dot com
11 years 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
2
ray.paseur sometimes uses gmail
1 year ago
Get an associative array of zeros for counting letter frequency

<?php
$ltrs
= array_fill_keys( range('a', 'z'), 0 );
up
2
Scratchy
15 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
-5
bananasims at hotmail dot com
17 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;
}
up
-5
phydeaux
15 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
-9
matrebatre
15 years ago
This function does the same as:
<?php
$array
= array_combine($keys,array_fill(0,count($keys),$value));
?>
up
-6
ntd at entidi dot it
8 years ago
To remove arbitrary keys from an associative array:

<?php

function nuke_keys($keys, $array) {
return
array_diff_key($array, array_fill_keys($keys, 0));
}

$array = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$keys = array('red', 'purple');

print_r(nuke_keys($keys, $array));
?>

The above snippet will return:

Array
(
[blue] => 1
[green] => 3
)
up
-4
manavchugh988 at gmail dot com
1 year ago
see array_fill_keys are basically used to make a new array from a pre-existing array in a form that the value of the pre-existing array will now be the key of the new Array .And there value will be same That we had given in the 2nd parameter . Example Below---->>>

<?php
//pre existing array
$a = array("a","b","c","d","e");

//new array with a single same value

$newArray = array_fill_keys($a, "Testing");

//printing the array

echo "<pre>";
print_r($newArray);
echo
"</pre>";
?>
output;
Array
(
[a] => Testing
[b] => Testing
[c] => Testing
[d] => Testing
[e] => Testing
)
up
-21
taylanaktepe at yahoo dot com
9 years 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
)
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