Exact Match, How to find exact (whole only) match Options

[Dag]

I need to find and replace strings inside the text. In this case, text is in the array format. I don't want to replace parts of the string if full string do not match. Samples:

CODE

$find = array('Dominican Republic','Netherlands Antilles','Netherlands','Republic');
$replace = array('Доминиканская Республика','Нидерландские Антильские острова','Нидерланды','Република');
$text = array('Netherlands','Caribbean Netherlands','Republic','Dominican Republic','Netherlands Antilles','My Personal Republic');
$textNew = str_replace($find,$replace,$text);

Result is

CODE

Array
(
    [0] => Нидерланды
    [1] => Caribbean Нидерланды
    [2] => Република
    [3] => Доминиканская Республика
    [4] => Нидерландские Антильские острова
    [5] => My Personal Република
)

Walking through string by string... here is one string only:

CODE

$text = array('Caribbean Netherlands');

Result is

CODE

Array
(
    [0] => Caribbean Нидерланды
)

Regexp "/b" didn't help.
Any ides about this? Is it well known issue and is it very simple to be solved?
Thanks in advance.