php - 无法打开流 : No such file or directory , 权限问题

Question

我刚刚开始使用本地主机中的脚本上传文件，

但是每次我想上传文件时都会出现错误:

警告:chmod() [function.chmod]:第 5 行/Applications/XAMPP/xamppfiles/htdocs/admin/upload.php 中没有此类文件或目录

警告:chmod() [function.chmod]:第 6 行/Applications/XAMPP/xamppfiles/htdocs/admin/upload.php 中没有此类文件或目录

我猜是权限和路径的问题，但不知道如何解决，我的代码:

    <?php

define("UPLOAD_DIR",realpath(dirname(__FILE__)).'/uploads' );
    // set proper permissions on the new file
    chmod(realpath(dirname(__FILE__)).'/uploads', 0777);
    chmod(realpath(dirname(__FILE__)).'/uploads/'.$name, 0777);


if (!empty($_FILES["myFile"])) {
    $myFile = $_FILES["myFile"];

    if ($myFile["error"] !== UPLOAD_ERR_OK) {
        echo "<p>An error occurred.</p>";
        exit;
    }

    // ensure a safe filename
    $name = preg_replace("/[^A-Z0-9._-]/i", "_", $myFile["name"]);

    // don't overwrite an existing file
    $i = 0;
    $parts = pathinfo($name);
    while (file_exists(UPLOAD_DIR . $name)) {
        $i++;
        $name = $parts["filename"] . "-" . $i . "." . $parts["extension"];
    }

    // preserve file from temporary directory
    $success = move_uploaded_file($myFile["tmp_name"],
        UPLOAD_DIR . $name);
    if (!$success) { 
        echo "<p>Unable to save file.</p>";
        exit;
    }



}
?>

Answer 1

chmod(realpath(dirname(__FILE__)).'/uploads', 0777);

chmod(realpath(dirname(__FILE__)).'/uploads/'.$name, 0777);