【WordPress插件】2022年最新版完整功能demo+插件v2.2.2.zip

# Tools for Easy Digital Downloads Extensions ## Installation and set up The extension in question needs to have a `composer.json` file, specifically with the following: ```json "require": { "easydigitaldownloads/edd-addon-tools": "*" }, "repositories": [ { "type": "vcs", "url": "https://github.com/awesomemotive/edd-addon-tools" } ] ``` Once set up, run `composer install --no-dev`. This should create a new `vendors/` folder with `easydigitaldownloads/edd-addon-tools/` inside. ## Using the extension loader The `ExtensionLoader` class can be used to conditionally load an extension if all the requirements are met. Here's an example: ```php require_once dirname( __FILE__ ) . '/vendor/autoload.php'; \EDD\ExtensionUtils\v1\ExtensionLoader::loadOrQuit( __FILE__, 'EDD_Content_Restriction_load', array( 'php' => '5.5', 'easy-digital-downloads' => '2.9', ) ); ``` - The `vendor/autoload.php` file needs to be included. - Call `\EDD\ExtensionUtils\v1\ExtensionLoader::loadOrQuit()`. This function takes three parameters: 1. The path to the main plugin file (`__FILE__` assuming this is included in the main plugin file). 2. The function/closure/callback you want to execute if all requirements are met. In this example that's a function called `EDD_Content_Restriction_load()`. 3. An array of requirements that must be met in order to load the plugin. If the requirements are all met, the callback function is triggered on the `plugins_loaded` hook. If the requirements are not met, then the callback is not triggered, and instead a warning is printed in the plugin's row in the admin table. ### Custom requirements You can also set up custom/arbitrary requirements. Here's an example for where an extension could arbitrarily require a version of any plugin (in this case, MailPoet): ```php \EDD\ExtensionUtils\v1\ExtensionLoader::loadOrQuit( __FILE__, 'edd_mailpoet_load', array( 'php' => '5.5', 'easy-digital-downloads' => '2.9', 'mailpoet' => array( 'minimum' => '2.0', 'name' => 'MailPoet', 'exists' => static function () { return defined( 'MAILPOET_VERSION' ) || class_exists( 'WYSIJA_object' ); }, 'current' => static function () { if ( defined( 'MAILPOET_VERSION' ) ) { return MAILPOET_VERSION; } elseif ( class_exists( 'WYSIJA_object' ) ) { return WYSIJA_object::$version; } else { return false; } }, ), ) ); ``` Note the use of closures. This ensures the constants are only evaluated on `plugins_loaded` instead of immediately. This is to ensure the dependencies are loaded before we check them.