如何在PHP中更改数组键值

我试图提取位于文件夹中的html文档的字数

<?php

$rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator('fulltext/course'));
$fulltext_course_files = array();

foreach ($rii as $f) {
    if ($f->isDir()) {
        continue;
    } else {

        $st = strip_tags(strtolower(file_get_contents($f)));
        $swc = str_word_count($st, 1);
        $fulltext_course_files[] = array_count_values($swc);
    }
}


print_r($fulltext_course_files);
?>

显示了一些类似的内容

Array ( [0] => Array ( [cs] => 7 [home] => 1 [page] => 1 [systems] => 2 [programming] => 1 [and] => 5 [operating] => 2 [practicum] => 1 ....

但是我想要

Array ( [0] => Array ( [cs] => 7 [home]...

将来

Array ( ["file1.html"] => Array ( [cs] => 7 [home]...

我试过了

$fulltext_course_files[$f] = array_count_values($swc);

但我得到了“警告：非法偏移类型…”

更改

$fulltext_course_files[] = array_count_values($swc);

到

---

我跳过了您实际上使用的是

recursiveiterator

。更正了从对象检索文件名的答案

$fulltext_course_files[] = array_count_values($swc);

$fulltext_course_files[$f->getFilename()] = array_count_values($swc);