Filter Hook: user_meta_pre_user_register

This filter can be used to modify/add user data before user registration. Custom validation before user registration is possible.

Parameters: $userData (array)

Example

More validation before user register

add_filter( 'user_meta_pre_user_register', 'user_meta_pre_user_register_function' );
function user_meta_pre_user_register_function( $userData ){
    // Write your code for more validation before user register.
    // return WP_Error object if there are any error or validation failed.
    
    return $userData;
}

Add more extra data to usermeta table

add_filter( 'user_meta_pre_user_register', 'user_meta_pre_user_register_function' );
function user_meta_pre_user_register_function( $userData ){
    // You can add some conditionl metadata
    $userData[ 'new_meta_key' ] = 'New Meta Value';
    
    return $userData;
}

Change Log: Since 1.1.2