
如果解决XAMPP无法正常运行问题
activate_plugin ( $plugin, $redirect = '', $network_wide = false, $silent = false )
activate_plugin: 这个函数用于激活WordPress中的一个插件。它执行一些检查,以确保该插件可以被激活,然后在WordPress的选项表中添加一个条目,表明该插件已经激活。
在一个”sandbox”中尝试激活插件,成功后重定向。
已经被激活的插件不会再尝试被激活。
它的工作方式是,在尝试包含插件文件之前,将重定向设置为错误。如果插件失败了,那么重定向将不会被成功信息所覆盖。同时,选项不会被更新,激活钩也不会在插件出错时被调用。
应该注意的是,下面的代码在任何情况下都不会真正防止文件内的错误。这段代码不应该被用在其他地方来复制”sandbox”,它使用重定向来工作。{@source 1}
如果发现任何错误或输出文本,那么将被捕获以确保成功重定向将更新错误重定向。
function activate_plugin( $plugin, $redirect = '', $network_wide = false, $silent = false ) { $plugin = plugin_basename( trim( $plugin ) ); if ( is_multisite() && ( $network_wide || is_network_only_plugin( $plugin ) ) ) { $network_wide = true; $current = get_site_option( 'active_sitewide_plugins', array() ); $_GET['networkwide'] = 1; // Back compat for plugins looking for this value. } else { $current = get_option( 'active_plugins', array() ); } $valid = validate_plugin( $plugin ); if ( is_wp_error( $valid ) ) { return $valid; } $requirements = validate_plugin_requirements( $plugin ); if ( is_wp_error( $requirements ) ) { return $requirements; } if ( $network_wide && ! isset( $current[ $plugin ] ) || ! $network_wide && ! in_array( $plugin, $current, true ) ) { if ( ! empty( $redirect ) ) { // We'll override this later if the plugin can be included without fatal error. wp_redirect( add_query_arg( '_error_nonce', wp_create_nonce( 'plugin-activation-error_' . $plugin ), $redirect ) ); } ob_start(); // Load the plugin to test whether it throws any errors. plugin_sandbox_scrape( $plugin ); if ( ! $silent ) { /** * Fires before a plugin is activated. * * If a plugin is silently activated (such as during an update), * this hook does not fire. * * @since 2.9.0 * * @param string $plugin Path to the plugin file relative to the plugins directory. * @param bool $network_wide Whether to enable the plugin for all sites in the network * or just the current site. Multisite only. Default false. */ do_action( 'activate_plugin', $plugin, $network_wide ); /** * Fires as a specific plugin is being activated. * * This hook is the "activation" hook used internally by register_activation_hook(). * The dynamic portion of the hook name, `$plugin`, refers to the plugin basename. * * If a plugin is silently activated (such as during an update), this hook does not fire. * * @since 2.0.0 * * @param bool $network_wide Whether to enable the plugin for all sites in the network * or just the current site. Multisite only. Default false. */ do_action( "activate_{$plugin}", $network_wide ); } if ( $network_wide ) { $current = get_site_option( 'active_sitewide_plugins', array() ); $current[ $plugin ] = time(); update_site_option( 'active_sitewide_plugins', $current ); } else { $current = get_option( 'active_plugins', array() ); $current[] = $plugin; sort( $current ); update_option( 'active_plugins', $current ); } if ( ! $silent ) { /** * Fires after a plugin has been activated. * * If a plugin is silently activated (such as during an update), * this hook does not fire. * * @since 2.9.0 * * @param string $plugin Path to the plugin file relative to the plugins directory. * @param bool $network_wide Whether to enable the plugin for all sites in the network * or just the current site. Multisite only. Default false. */ do_action( 'activated_plugin', $plugin, $network_wide ); } if ( ob_get_length() > 0 ) { $output = ob_get_clean(); return new WP_Error( 'unexpected_output', __( 'The plugin generated unexpected output.' ), $output ); } ob_end_clean(); } return null; }