//自定义WordPress 密码文章提示文字 devework.com
add_filter( 'the_password_form', 'dw_custom_password_form' );
function dw_custom_password_form() {
    global $post;
    $label = 'pwbox-'.( empty( $post->ID ) ? rand() : $post->ID );
    $o = '<form class="protected-post-form" action="' . get_option('siteurl') . '/wp-login.php?action=postpass" method="post">
    ' . __( "<p>密码保护文章，你必须输入正确的密码才能访问：</p>" ) . '
    <label for="' . $label . '">' . __( "Password:" ) . ' </label><input name="post_password" id="' . $label . '" type="password" size="20" /><input type="submit" name="Submit" value="' . esc_attr__( "Submit" ) . '" />
    </form>
    ';
    return $o;
}