Transform string into array excluding repeated values

Question

In PHP I made a script that takes each word of a Tring and turns them into an array, giving explodes into empty spaces. Then he eliminates the repeated words and shows each of them, like this:

<?php
$hashtag = "#caio #azul #caio #azul #leão #orelha #caio  #caio  #caio";
//
$hashtagArray = explode(" ", $hashtag);
// exclui elementos vazios
$hashtagArray = array_filter($hashtagArray);
// exclui elementos iguais
$hashtagArray = array_unique($hashtagArray);
// reseta as chaves
$hashtagArray = array_values($hashtagArray);
// cria uma array
$hashtagArrayDuplica = array();
foreach ($hashtagArray as &$value) {
    // repito a checagem, para evitar erros
    if (!in_array($value, $hashtagArrayDuplica)) {
        $hashtagArrayDuplica[] = $value;
        echo $value."<br>";
    }
}
?>

The result obtained is this:

#caio
#azul
#leão
#orelha

Which seems to be right. But incredibly on the client server, this application keeps showing the repeated items, practically disregarding my code, I don’t know if it’s for the PHP version, or any other reason (I can’t see the script running there, I only get print screen)... what can it be? Can there be any special character? Is there another way to do this check, to see if the server works?

PS: Notice that in my code I try to check 2 times if you have something repeated, it was an attempt not to give error in the client, but without success.

Answer 1

I could test like this here ?

$hashtag = "#caio #azul #caio #azul #leão #orelha #caio  #caio  #caio";
//
$hashtagArray = explode(" ", $hashtag);

echo "<pre>";
print_r($hashtagArray);
echo "</pre>";

foreach ($hashtagArray as $key => $value){
  if (strlen($value)>0){
    $new[trim($value)] = $value;
  }
}

echo "<pre>";
print_r($new);
echo "</pre>";

exit();

Another question ... has this code ever been wrong before? It may be that they are not putting your file in the right place on the server, then you could never know what is wrong, because you would be running 1 old code...