如何删除字符串中的重复单词，这个字符串是数组的值？

Question

how to remove a duplicate word within a string , whereby this string is a value of an array ?

e.g

foreach($results as $result)
{
   foreach($result as $words)
    {
        echo $words = str_word_count($words,0)."
";
    }
}

result is e.g

test  = 1
test activity = 2
test CI to CGI = 4
Test car Pool = 3

what i want to happen is, e.g remove the other duplicates of the word "test" and list all the unqiue word so that the result will only be

test = 1
activity = 1
CI = 1
to = 1
CGI = 1
car = 1
pool = 1

Answer 1

$final=array();

foreach($results as $result)
{
   foreach($result as $key=> $words)
    {
        echo $words = str_word_count($words,0)."
";

       if(!in_array($words,array_keys($final))
           $final[$words]=str_word_count($words,0);

    }
}