I have an indexed array as follows
$item = array("one", "two", "three", "four");
I need to change the index of this array with another array
$indexarray = array("2", "0", "3", "1");
assign new index to $item array like this,
one ---> 2
two ---> 0
three ---> 3
four ---> 1
Required result:
$item = array("two", "four", "one", "three");
Use:
$c=array_combine($indexarray ,$item );
print_r($c);
Use this
$indexarray = array("2","0","3","1");
$item = array("one","two","three","four");
$result=array_combine($indexarray ,$item );
print_r($result);
<?php
$item = array("one","two","three","four");
$indexarray = array("2","0","3","1");
$item_new=array();
foreach($indexarray as $key=>$value)
{
$item_new[$key]=$item[$value];
}
$item=$item_new;
print_r($item);
?>
First combine both arrays
$item = array("one","two","three","four");
$indexArray = array("2","0","3","1");
$tempArray = array_combine($indexArray, $item);
Then sort the array
ksort($tempArray);
To not only assign the desired indexes, but also reposition the elements in accordance with the new indexes, just use array_multisort() -- this task is exactly why it was invented. Demo
$item = ["one", "two", "three", "four"];
$indexarray = ["2", "0", "3", "1"];
array_multisort($indexarray, $item);
var_export($item);
Output:
array (
0 => 'two',
1 => 'four',
2 => 'one',
3 => 'three',
)
array("2","0","3","1");orarray(2,0,3,1);?