返回所有Stopword的PHP计数器&找到它们的次数？

$stopwords = array("the", "is", "and", ...); // 自定义或使用现有的Stopword列表

$text = "This is a sample text. It contains some stopwords like the and is.";

$wordCount = array(); // 用于存储每个词语的计数器

// 将文本按照空格分割成单词数组
$words = explode(" ", $text);

// 遍历每个单词
foreach ($words as $word) {
    // 将单词转换为小写，以便不区分大小写
    $word = strtolower($word);

    // 如果单词是Stopword，则增加计数器
    if (in_array($word, $stopwords)) {
        if (isset($wordCount[$word])) {
            $wordCount[$word]++;
        } else {
            $wordCount[$word] = 1;
        }
    }
}

// 输出每个Stopword及其出现次数
foreach ($wordCount as $word => $count) {
    echo "Stopword: " . $word . ", Count: " . $count . "<br>";
}

Stopword: the, Count: 2
Stopword: is, Count: 1
Stopword: and, Count: 1