How to sort multiple arrays?

[torvald_helmer]

I have two arrays, $arr1 and $arr2.

 

Values in the first corresponds to the same index-values in the second.

 

How do I sort these array's ascending according to $arr1?

 

 

[Barand]

array_multisort

 

<?php
$a = array(2,3,1);
$b = array('a', 'b', 'c');
array_multisort($a, $b);

echo '<pre>', print_r($a, true), '</pre>';
echo '<pre>', print_r($b, true), '</pre>';
?>

[Voldemort]

Or if both of the arrays hold single corresponding values, you might want to try using an associative array, and then ksort() it.

 

<?php
$fruits = array("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple");
ksort($fruits);
foreach ($fruits as $key => $val) {
    echo "$key = $val\n";
}
?> 

changes the array to be sort by the key. If you want it sorted by the value, use asort($fruits) instead. Output is

a = orange

b = banana

c = apple

d = lemon

That's taken from the php.net page on ksort, http://www.php.net/manual/en/function.ksort.php