Попробуй ... у меня это работает
<?php
function clean_url($text)
{
$code_entities_match = array(' ','&','--','"','!','@','#','$','%','^','&','*','(',')','_','+','{','}','|',':','"','<','>','?','[',']','\\',';',"'",',','.','/','*','+','~','`','=','"');
$code_entities_replace = array('-','-','','','','','','','','','','','','','','','','','','','','','','','','');
$text = str_replace($code_entities_match, $code_entities_replace, $text);
return urlencode($text);
}
?>