Question

我正在尝试将我的php脚本与我的数据库连接到在线服务器中。我正在尝试使用require_once函数，但是我收到fatal_error时出现以下错误消息。

Warning: require_once(/home/username/public_html/droidDBtest/android_login_api/include/DB_Functions.php): failed to open stream: No such file or directory in /home/username/public_html/droidDBtest/android_login_api/register.php on line 3

Fatal error: require_once(): Failed opening required '/home/username/public_html/droidDBtest/android_login_api/include/DB_Functions.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/username/public_html/droidDBtest/android_login_api/register.php on line 3

我试图遵循stackoverflow的第一个结果并添加了Document Root，但是，它仍然无法正常工作。这是我收到错误的代码：

require_once ($_SERVER['DOCUMENT_ROOT'].'/android_login_api/include/DB_Functions.php');

以下是我服务器中的文件夹结构

 public_html/
     -- droidDBtest
        -- android_login_api
            -- include
                 config.php
                 DB_Connect.php
                 DB_Functions.php
               register.php

提前致谢。

Answer 1

正如您所看到的，如果您将错误消息与文件夹结构进行比较，那么您将错过android_login_api文件夹。

这应该有效：

require_once ($_SERVER['DOCUMENT_ROOT'].'/android_login_api/include/DB_Functions.php');

此外，您似乎是从register.php文件夹中的android_login_api执行此操作。所以你可以做一个相对路径：

require_once 'include/DB_Functions.php';

Answer 2

查看你的目录结构，假设socument root是public_html，你应该这样做：

public class StuffManagerInputDialogFragment extends DialogFragment {

    EditText nameInputField;
    EditText tagInputField;
    DBHandler dbHandler;
    StuffManagerFragment f = new StuffManagerFragment();

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        LayoutInflater inflater = getActivity().getLayoutInflater();

        final View v_iew = inflater.inflate(R.layout.fragment_inputdialog, null);

        nameInputField = (EditText) v_iew.findViewById(R.id.inputdialogname);
        tagInputField = (EditText) v_iew.findViewById(R.id.inputdialogtag);
        dbHandler = new DBHandler(getActivity(), null, null, 1);
        final MainActivity ma = (MainActivity) getActivity();

        final AlertDialog.Builder newLinkDialog = new AlertDialog.Builder(getActivity());
        newLinkDialog.setView(v_iew)
                .setTitle("New Link")
                .setPositiveButton("Save", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        String nameInputFieldText = nameInputField.getText().toString();
                        String tagInputFieldText = tagInputField.getText().toString();
                        ArrayList<String> nameArray = dbHandler.nameArrayMethod();
                        ArrayList<String> tagArray = dbHandler.tagArrayMethod();
                        NavigationView navigationView = (NavigationView) getActivity().findViewById(R.id.nav_view);
                        Menu menu = navigationView.getMenu();

                        if (nameArray.contains(nameInputFieldText) || tagArray.contains(tagInputFieldText)) {
                            if (nameArray.contains(nameInputFieldText) && tagArray.contains(tagInputFieldText)) {
                                AlertDialog.Builder errorBoth = new AlertDialog.Builder(getActivity())
                                        .setTitle("Error")
                                        .setMessage("The name and tag you entered are already in use.")
                                        .setIcon(R.drawable.ic_error_black)
                                        .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                                            @Override
                                            public void onClick(DialogInterface dialog, int which) {
                                                //Return to previous dialog here
                                            }
                                        });
                                        errorBoth.show();
                            }
                        } else {
                            dbHandler.addLink(nameInputFieldText, tagInputFieldText);
                            nameArray = dbHandler.nameArrayMethod();

                            int nameArraySize = (nameArray.size() - 1);
                            MenuItem item = menu.add(R.id.group1, nameArraySize, 1, nameArray.get(nameArraySize));

                            Toast.makeText(getContext(), "'" + nameInputFieldText + " - " + tagInputFieldText + "' link saved.", Toast.LENGTH_SHORT).show();

                            ma.addSMVFFragments();
                            f.hideDeleteAllButton = false;
                            getActivity().invalidateOptionsMenu();
                        }
                    }
                })
                .setNegativeButton("Cancel", null);
        return newLinkDialog.create();
    }
}

尝试在php中使用require_once时出现致命错误

2 个答案: