array_diff
This function does the same as:
<?php
$array = array_combine($keys,array_fill(0,count($keys),$value));
?>
array_fill_keys
(PHP 5 >= 5.2.0)
array_fill_keys — Создать массив и заполнить его значениями, с определенными ключами
Описание
Создает и заполняет массив значением параметра value , используя значения массива keys в качестве ключей.
Список параметров
- keys
-
Массив значений, которые будут использованы в качестве ключей
- value
-
Строка или массив значений
Возвращаемые значения
Возвращает заполненный массив
Примеры
Пример #1 Пример использования array_fill_keys()
<?php
$keys = array('foo', 5, 10, 'bar');
$a = array_fill_keys($keys, 'banana');
print_r($a);
?>
Результат выполнения данного примера:
Array ( [foo] => banana [5] => banana [10] => banana [bar] => banana )
add a note
User Contributed Notesarray_fill_keys
matrebatre
20-Jun-2008 04:28
20-Jun-2008 04:28
phydeaux
14-May-2008 07:26
14-May-2008 07:26
Scratchy's version still doesn't work like the definition describes. Here's one that can take a mixed variable as the second parameter, defaulting to an empty string if it's not specified. Don't know if this is exactly how the function works in later versions but it's at least a lot closer.
function array_fill_keys($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] =>
Scratchy
02-May-2008 11:18
02-May-2008 11:18
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, $arr2);
returns:
abc => 452, def =>128
bananasims at hotmail dot com
19-Dec-2006 02:03
19-Dec-2006 02:03
Some of the versions do not have this function.
I try to write it myself.
You may refer to my script below
function array_fill_keys($array, $values) {
if(is_array($array)) {
foreach($array as $key => $value) {
$arraydisplay[$array[$key]] = $values;
}
}
return $arraydisplay;
}