Description:
------------
Trying to translate swedish encoded characters with strtr function using replace_pairs.

The function translate numbers from 0 to sizeof(replace_pairs-array) to the string "Array".

See example to reproduce.

Reproduce code:
---------------
<?php
$strSearchWord = "abc123&aring;poli987654321";

$arrTransformChars[] = array('&Aring;' => '?');
$arrTransformChars[] = array('&Auml;'  => '?');
$arrTransformChars[] = array('&Ouml;'  => '?');
$arrTransformChars[] = array('&aring;' => '?');
$arrTransformChars[] = array('&auml;'  => '?');
$arrTransformChars[] = array('&ouml;'  => '?');


echo $strSearchWord . "<br>";
$strSearchWord = strtr($strSearchWord,$arrTransformChars);
echo $strSearchWord . "<br>";
exit;
?>

Expected result:
----------------
abc123&aring;poli987654321
abc123?poli987654321

Actual result:
--------------
abc123?poli987654321
abcArrayArrayArray?poli9876ArrayArrayArrayArrayArray