Wordpress/PHP - Namespaces/Autoloader - Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback

Question

我正在完全从头开始创建我的第一个插件。每当我尝试将命名空间添加到 'template-plugin-activate.php' 文件时，我都会收到以下错误：

Plugin could not be activated because it triggered a fatal error.
Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback, class "TemplatePluginActivate" not found in C:\xampp\htdocs\wordpress\wp-includes\class-wp-hook.php:292 Stack trace: #0 C:\xampp\htdocs\wordpress\wp-includes\class-wp-hook.php(316): WP_Hook->apply_filters('', Array) #1 C:\xampp\htdocs\wordpress\wp-includes\plugin.php(484): WP_Hook->do_action(Array) #2 C:\xampp\htdocs\wordpress\wp-admin\plugins.php(193): do_action('activate_templa...') #3 {main} thrown in C:\xampp\htdocs\wordpress\wp-includes\class-wp-hook.php on line 292

以下是我的文件。感谢任何帮助。

// inc/template-plugin.php

<?php

namespace Inc;

class TemplatePluginActivate
{
   public static function activate() {
      flush_rewrite_rules();
   }
}

//模板-plugin.php

defined( 'ABSPATH' ) or die( 'You can\t access this file.' );

if ( file_exists( dirname( __FILE__ ) . '/vendor/autoload.php' ) ) {
    require_once dirname( __FILE__ ) . '/vendor/autoload.php';
}

use Inc\TemplatePluginActivate;

if ( !class_exists( 'TemplatePlugin' ) ) {

    class TemplatePlugin
    {
        //
    }
}

require_once plugin_dir_path( __FILE__ ) . 'inc/template-plugin-activate.php';
register_activation_hook( __FILE__, array( 'TemplatePluginActivate', 'activate' ) );

require_once plugin_dir_path( __FILE__ ) . 'inc/template-plugin-deactivate.php';
register_activation_hook( __FILE__, array( 'TemplatePluginDeactivate', 'deactivate' ) );

// composer.json

{
    "name": "author/template-plugin",
    "description": "awesome starter plugin example",
    "type": "project",
    "license": "GPL",
    "authors": [
        {
            "name": "author",
            "email": ""
        }
    ],
    "minimum-stability": "dev",
    "require": {},
    "autoload": {
        "psr-4": {"Inc\": "./inc"}
    }
}

Answer 1

问题出在 register_activation_hook()。

您的回调是 TemplatePluginActivate class 的 activate() 方法。一旦您引入名称空间，就需要对其进行更新。 class 将是 Inc\TemplatePluginActivate.

register_activation_hook( __FILE__, array( 'Inc\TemplatePluginActivate', 'activate' ) );

此外，您的停用操作也是运行激活。你需要的钩子是 register_deactivation_hook().

Wordpress/PHP - Namespaces/Autoloader - Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback

Wordpress/PHP - Namespaces/Autoloader - Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback

php

wordpress

composer-php

autoload