array_diff
re: matrebatre
That doesn't work for older versions since array_combine() isn't available pre PHP5, which was bananasims' initial point.
array_fill_keys
(PHP 5 >= 5.2.0)
array_fill_keys — Fill an array with values, specifying keys
Description
Fills an array with the value of the value parameter, using the values of the keys array as keys.
Parameters
- keys
-
Array of values that will be used as keys. Illegal values for key will be converted to string.
- value
-
Value to use for filling
Return Values
Returns the filled array
Examples
Example #1 array_fill_keys() example
<?php
$keys = array('foo', 5, 10, 'bar');
$a = array_fill_keys($keys, 'banana');
print_r($a);
?>
The above example will output:
Array ( [foo] => banana [5] => banana [10] => banana [bar] => banana )
add a note
User Contributed Notesarray_fill_keys
phydeaux
06-Sep-2008 11:03
06-Sep-2008 11:03
matrebatre
21-Jun-2008 12:28
21-Jun-2008 12:28
This function does the same as:
<?php
$array = array_combine($keys,array_fill(0,count($keys),$value));
?>
phydeaux
15-May-2008 03:26
15-May-2008 03:26
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
03-May-2008 07:18
03-May-2008 07:18
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, $arr2);
returns:
abc => 452, def =>128
bananasims at hotmail dot com
20-Dec-2006 12:03
20-Dec-2006 12:03
Some of the versions do not have this function.
I try to write it myself.
You may refer to my script below
function array_fill_keys($array, $values) {
if(is_array($array)) {
foreach($array as $key => $value) {
$arraydisplay[$array[$key]] = $values;
}
}
return $arraydisplay;
}