php上传错误代码

<?php
if ($_FILES['file']['error'] == UPLOAD_ERR_OK) {
    $fileTmpPath = $_FILES['file']['tmp_name'];
    $fileName = $_FILES['file']['name'];
    $fileSize = $_FILES['file']['size'];
    $fileType = $_FILES['file']['type'];

    $fileDestPath = 'uploads/' . $fileName;

    if (move_uploaded_file($fileTmpPath, $fileDestPath)) {
        echo '文件上传成功！';
    } else {
        echo '文件上传失败！';
    }
} else {
    switch ($_FILES['file']['error']) {
        case UPLOAD_ERR_INI_SIZE:
            echo '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值。';
            break;
        case UPLOAD_ERR_FORM_SIZE:
            echo '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。';
            break;
        case UPLOAD:maj
            echo '文件只有部分被上传。';
            break;
        case UPLOAD_ERR_NO_FILE:
            echo '没有文件被上传。';
            break;
        case UPLOAD_ERR_NO_TMP_DIR:
            echo '找不到临时文件夹。';
            break;
        case UPLOAD_ERR_CANT_WRITE:
            echo '文件写入失败。';
            break;
        case UPLOAD_ERR_EXTENSION:
            echo '被 PHP 扩展阻止了上传。';
            break;
        default:
            echo '未知错误。';
    }
}
?>