Get tags from a mixed string with or without quotes (grouped or not)

getArrayTags.php

<?php

function getTags($tag_list) {
        $matches = array();

        // Get the words grouped between quotes (ex: "Manu Chao")
        preg_match_all('~(["\'])([^"\']+)\1~', $tag_list, $quoted);

        // Get the others
        $unescaped = trim(str_replace($quoted[0], "", $tag_list));
        $unescaped = preg_replace('/(\s)+/', ' ', $unescaped);

        $matches = array_merge((array)$quoted[2], (array)explode( ' ', $unescaped ));

        unset($quoted, $unescaped);
        return count($matches) > 0 ? $matches : array();
}

$str = '"Philippe Katerine" "Willy Moon" Borderline "Yeah Yeah" "La Masheillaise 2" "Mighty Mike" bootleg';
$tag_list = getTags($str);

echo '<pre>' . print_r($tag_list, true) . '</pre>';

/* Result:
Array
(
    [0] => Philippe Katerine
    [1] => Willy Moon
    [2] => Yeah Yeah
    [3] => La Masheillaise 2
    [4] => Mighty Mike
    [5] => Borderline
    [6] => bootleg
)
*/