激活 wp 插件时无法创建多个自定义数据库表

我无法在激活我的 WordPress 插件时在数据库中创建多个自定义表，它仅创建最后一个表，如此代码中提到的“书签”，而不是创建所有表（用户、字段、可见性、通知）等

function your_plugin_options_install() {
    global $wpdb;
    //global $your_db_name;
    $uservar = $wpdb->prefix . 'user';
    $fieldvar = $wpdb->prefix . 'field';
    $visibilitytypevar = $wpdb->prefix . 'visibily';
    $notificationvar = $wpdb->prefix . 'notification';
    $jobtypevar = $wpdb->prefix . 'jobtype';
    $bookmarkvar = $wpdb->prefix . 'bookmark';
   // $profiledatavar = $wpdb->prefix . 'profiledata';
    //$employeevar = $wpdb->prefix . 'employee';
 //echo "some";
    // create the ECPT metabox database table
    //if($wpdb->get_var("SHOW TABLES LIKE '$yourtable'") != $yourtable) 
    //{
        $sql = "CREATE TABLE IF NOT EXISTS " . $uservar . " (
        `u_id` int(20) NOT NULL AUTO_INCREMENT,
        `u_name` varchar(30) ,
        `u_phonenumber` int(20) ,
        `u_email` varchar(30) NOT NULL,
        `u_password` varchar(50) NOT NULL,
         PRIMARY KEY (u_id)
         );";
          $sql = "CREATE TABLE IF NOT EXISTS " . $fieldvar . " (
         `f_id` int(20) NOT NULL AUTO_INCREMENT ,
         `f_title` varchar(30) NOT NULL,
          PRIMARY KEY (f_id)
         );";

         $sql = "CREATE TABLE IF NOT EXISTS " . $visibilitytypevar . " (
         `v_id` int(20) NOT NULL AUTO_INCREMENT ,
         `v_type` bool NOT NULL,
          PRIMARY KEY (v_id)
         );";

         $sql = "CREATE TABLE IF NOT EXISTS " . $notificationvar . " (
         `n_id` int(20) NOT NULL AUTO_INCREMENT ,
         `u_id` int(20) NOT NULL,
         PRIMARY KEY (n_id)
         );";

         $sql = "CREATE TABLE IF NOT EXISTS " . $jobtypevar . " (
         `jt_id` int(20) NOT NULL AUTO_INCREMENT ,
         `jt_title` varchar(30),
         PRIMARY KEY (jt_id)
         );";

          $sql = "CREATE TABLE IF NOT EXISTS " . $bookmarkvar . " (
         `bm_id` int(20) NOT NULL AUTO_INCREMENT ,
         `u_id` int(20) NOT NULL,
         `bm_title` varchar(30),
         PRIMARY KEY (bm_id)
         );";


        require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
        dbDelta($sql);
    }

//}
// run the install scripts upon plugin activation
register_activation_hook(__FILE__,'your_plugin_options_install');

你超越了你的$sql多变的。 只需在每次查询后使用 dbDelta 函数即可。 像下面的格式。

require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

// your first query
$sql = '...'; 
dbDelta($sql);

// your second query
$sql = '...'; 
dbDelta($sql);

.
.
.


// your nth query
$sql = '...'; 
dbDelta($sql);