Codeigniter 4 - 在实时服务器上调用未定义函数 App\Controllers\base_url()

Question

Codeigniter 4 base_url() 在本地主机上运行良好（即使使用像 http://192.168.0.2/ 这样的 IP 地址）

但是在将其上传到实时服务器时，我收到以下错误。

Call to undefined function App\Controllers\base_url()

我在 App\Config\App.php 文件中设置了 base_url 并尝试在 App\Config\BaseController.[=39= 中自动加载 url 助手] 文件如下图

public $baseURL = 'http://domainname.com/'; // App.php file

protected $helpers = ['url']; // BaseController.php file

我也试过在控制器函数中加载url_helper，比如

helper('url'); // my_controller.php file

我没有更改 .htaccess 文件中的任何内容。和ci4安装自带的一样。

知道是什么导致了这个问题吗？

.htaccess文件如下：

# Disable directory browsing
Options All -Indexes

# ----------------------------------------------------------------------
# Rewrite engine
# ----------------------------------------------------------------------

# Turning on the rewrite engine is necessary for the following rules and features.
# FollowSymLinks must be enabled for this to work.
<IfModule mod_rewrite.c>
    Options +FollowSymlinks
    RewriteEngine On

    # If you installed CodeIgniter in a subfolder, you will need to
    # change the following line to match the subfolder you need.
    # http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewritebase
    # RewriteBase /

    # Redirect Trailing Slashes...
    RewriteCond %{REQUEST_FILENAME} !-d
        RewriteRule ^(.*)/$ / [L,R=301]

    # Rewrite "www.example.com -> example.com"
    RewriteCond %{HTTPS} !=on
    RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
    RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]

    # Checks to see if the user is attempting to access a valid file,
    # such as an image or css document, if this isn't true it sends the
    # request to the front controller, index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php/ [L]

    # Ensure Authorization header is passed along
    RewriteCond %{HTTP:Authorization} .
    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
</IfModule>

<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed, all 404's
    # can be sent to index.php, and everything works as normal.
    ErrorDocument 404 index.php
</IfModule>

# Disable server signature start
    ServerSignature Off
# Disable server signature end

Answer 1

在 app.php 试试这个：

$main_root  = "http://".$_SERVER['HTTP_HOST'];
$main_root .= str_replace(basename($_SERVER['SCRIPT_NAME']),"",$_SERVER['SCRIPT_NAME']);
public $baseURL = $main_root;

它将动态调用 url 而不是静态的 http 或 https。

Answer 2

事实证明我的系统文件已损坏，就像 TimBrownlaw 指出的那样。

导致此问题的主要且最有可能的问题是 url_helper 是否损坏。

但我通过重新下载和上传 Code Igniter 4 的核心文件解决了这个问题。

Codeigniter 4 - 在实时服务器上调用未定义函数 App\Controllers\base_url()

Codeigniter 4 - Call to undefined function App\Controllers\base_url() on live server

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