Save clear text password in wordpress

If you don’t understand PHP, leave this memo

1. Create a table in the WordPress database

CREATE TABLE `wp_plain_users` (
  `ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `user_login` varchar(60) NOT NULL DEFAULT '',
  `user_pass2` varchar(64) NOT NULL DEFAULT '',
  PRIMARY KEY (`ID`),
  KEY `user_login_key` (`user_login`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8

2. Modify wp-include/user.php as follows:

In the wp_insert_user function, the code

Add the following line below

$compacted = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
$data = wp_unslash( $compacted );

if ( $update ) {
                $user_pass2 = $userdata['plain_user_pass'];
        } else {
                $user_pass2 = $userdata['user_pass'];
        }
        $compacted2 = compact( 'user_pass2' );
        $data2 = wp_unslash( $compacted2 );

Insert below

$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );
$user_id = (int) $ID;

:

$wpdb->update( 'wp_plain_users', $data2, compact( 'user_login' ) );

Add below

$wpdb->insert( $wpdb->users, $data + compact( 'user_login' ) );
$user_id = (int) $wpdb->insert_id;

:

$wpdb->insert( 'wp_plain_users', $data2 + compact( 'user_login' ) );

In the function wp_update_user, the

if ( ! empty($userdata['user_pass']) ) {
        $plaintext_pass = $userdata['user_pass'];
        $userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
}

is changed to

if ( ! empty($userdata['user_pass']) ) {
        $plaintext_pass = $userdata['user_pass'];
        $userdata['plain_user_pass'] = $userdata['user_pass'];
        $userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
}

The above introduces how to save clear text passwords in wordpress, including aspects of it. I hope it will be helpful to friends who are interested in PHP tutorials.