编辑代码

<?php header("content-type:text/html;charset=utf-8");
header("access-control-allow-origin: *");

$type = $_GET["type"];
$message = [
    'status' => 200,
    'info' => ''
];

if ($type == 'read') {
    $rtn = readToFile();
    if ($rtn) {
        $message["info"] = $rtn;
    } else {
        $message["info"] = "read fail";
        $message["status"] = 201;
    }
}
if ($type == 'write') {
    $token = $_GET["token"];
    if ($token == null) {
        $message["info"] = "token is null";
        $message["status"] = 201;
    } else {
        $string = $token;

        if (writeToFile($string)) {
            $message["info"] = "write success";
            $message["status"] = 200;
        } else {
            $message["info"] = "write error";
            $message["status"] = 200;
        }
    }
}
echo json_encode($message, JSON_UNESCAPED_UNICODE);


function writeToFile($string)
{
    $filePath = 'token.txt';
    if (file_put_contents($filePath, $string, LOCK_EX) === false) {
        return false;
    }
    return true;
}

function readToFile()
{
    $filePath = 'token.txt';
    $content = file_get_contents($filePath);
    if ($content === false) {
        return false;
    }
    return $content;
}