function unicodes($sText)
{
$aReplacePL = array(
'ą' => 'ą',
'ę' => 'ę',
'ś' => 'ś',
'ć' => 'ć',
'ó' => 'ó',
'ń' => 'ń',
'ż' => 'ż',
'ź' => 'ź',
'ł' => 'ł',
'Ą' => 'Ą',
'Ę' => 'Ę',
'Ś' => 'Ś',
'Ć' => 'Ć',
'Ó' => 'Ó',
'Ń' => 'Ń',
'Ż' => 'Ż',
'Ź' => 'Ź',
'Ł' => 'Ł'
);
return str_replace(array_keys($aReplacePL), array_values($aReplacePL), $sText);
}