如何将数组中的键与服务器上的文件进行比较？

I have 2 questions about a PHP file with an array like so:

$test = array('test1.txt' => '<random>', 'test2.txt' => '<random>', 'test3.txt' => '<random>', 'test4.txt' => '<random>', 'test5.txt' => '<random>');

I also have files on my server like so:

    /home/test1.txt
    /home/test2.txt
    /home/test3.txt
    /home/test4.txt
    /home/test5.txt

How would I go by checking that every file that is defined in the array also exists in the folder /home/ and that all files in /home/ are defined in the array?

Q2) Is there a way to automatically grab the file names in /home/*.txt and automatically insert them into an empty array like:

    $test = array('' => '<random>',
                   '' => '<random>',
                   '' => '<random>',
                   '' => '<random>',
                   '' => '<random>');

Thank you!

try this:

foreach ($test as $fileName => $value) {
    if(file_exists("/home/{$fileName}")) {
        //exists
    } else {
        //Does not exist.
    }
}

Q1) You can check if a file is on your server from an array of path with file_exists function.

foreach ($test as $str_filename=> $random) {
    if (file_exists('/home/' . $str_filename) === false) {
        echo 'A file is missing on server';
    }
}

You can grab .txt file with glob function like this.

foreach (glob('/home/*') as $str_filename) {
    if (array_key_exists($str_filename, $test) === false) {
        echo 'A file is missing on array';
    }
}

Q2) If random is the content from the file, you can grab it with file_get_contents function.

$test = [];
foreach (glob('/home/*.txt') as $str_filename) {
    $test[$str_filename] = file_get_contents('/home/' . $str_filename);
}