WordPress插件页脚菜单错误

Question

我得到了一个插件的错误，我想知道是否有快速修复。

我已经搜索了这个问题并检查了插件网站的创建者。没有帮助。

的插件需要：

<?php do_shortcode('[print_wp_footer]'); ?> 

添加到Footer.php为主题。

的WordPress然后给出一个错误：

Warning: Invalid argument supplied for foreach() in /.../wp-content/plugins/wp-footer-menu/main.php on line 192 

这里是由自身

foreach ($values as $attr=>$val) { 

在这里，线路的代码行 “192” 有箭头的部分。

<?php 


} 

function wp_footer_menu_confirm_delete ($delete) { 

$base_uri = wp_footer_menu_base_uri(); 

// Find out about this menu item. 
$menu_items = get_option ('footer_menu_links'); 
$item_to_delete = explode(',', $menu_items[$delete]); 
$item_title = $item_to_delete[0]; 
$item_address = $item_to_delete[1]; 

// Create form for user to confirm option. 
echo '<h3>Confirm Delete</h3>'; 
echo '<p>Are you sure you want to delete this menu item?</p>'; 
echo '<p>Title: ' . $item_title . '</p>' ; 
echo '<p>Address: ' . $item_address . '</p>'; 
echo '<form method="post" action="' . $base_uri . '">'; 
echo '<input type="hidden" name="delete_key" value="' . $delete . '" />'; 
echo wp_nonce_field('confirm_delete', 'delete'); 
echo '<input type="submit" class="button-primary" value="Delete item" />'; 
echo '</form>'; 

} 

function wp_footer_menu_process() { 

if (isset($_GET[ 'delete' ])) { 
    $nonce = $_GET ['nonce']; 
    if (wp_verify_nonce($nonce, 'footer_delete')) { 
     wp_footer_menu_confirm_delete ($_GET[ 'delete' ]); 
    } 
    return 0; 
} else if (isset($_POST[ 'delete_key' ]) && check_admin_referer ('confirm_delete', 'delete')) { 

    $menu_items = get_option ('footer_menu_links'); 
    $key = $_POST['delete_key']; 
    unset ($menu_items[$key]); 
    update_option ('footer_menu_links', $menu_items); 

} 

if (isset($_POST[ 'link_title' ]) && check_admin_referer('footer_menu', 'add')) { 

    $link_title = $_POST ['link_title']; 
    $link_address = $_POST ['link_address']; 
    $link_order = $_POST ['link_order']; 
    $new_link = $link_title . ',' . $link_address . ',' . $link_order; 

    $footer_links = get_option('footer_menu_links'); 
    if ($footer_links == '') { 
     $footer_links = array(); 
    } 
    $new_links = array_push($footer_links, $new_link); 
    update_option ('footer_menu_links', $footer_links); 
} 

if (isset($_POST[ 'font-size' ]) && check_admin_referer('footer_menu', 'save')) { 
    if (empty($_POST['auto-footer'])) { 
     $_POST['auto-footer'] = 'no'; 
    } 
    if (empty($_POST['auto-sticky'])) { 
     $_POST['auto-sticky'] = 'no'; 
    } 
    update_option('wp_footer_values', $_POST); 
    echo '<div class="wp_footer_info" style="margin:0 auto;margin-top:5px;text-align:center;">Customizations Saved</div>'; 
} 

return 1; 

} 

function wp_footer_print_menu() { 
$menu = wp_footer_get_menu(); 
$values = get_option('wp_footer_values'); 
--192--> foreach ($values as $attr=>$val) { 
    $menu = str_replace('%' . $attr . '%', stripslashes($val), $menu); 
} 
echo $menu; 
if ($values['auto-sticky'] == 'yes') { 
    ?> 
    <style type="text/css"> 
     .wp_footer_sticky { 
      position:fixed; 
      bottom: 0; 
      width: 100%; 
     } 
    </style> 
    <script type="text/javascript"> 
     jQuery(document).ready(function($) { 
      $('#wp_footer_menu').addClass('wp_footer_sticky'); 
     }); 
    </script> 
    <?php 

Answer 1

这似乎依赖于下面的代码的返回值：

$values = get_option('wp_footer_values'); 

根据WordPress的抄本，如果选项不存在，返回一个布尔值FALSE。您需要验证$values变量是否为空。请使用以下代码进行检查。

function wp_footer_print_menu() { 
$menu = wp_footer_get_menu(); 
$values = get_option('wp_footer_values'); 
if (!empty($values)) { // <-- verify it's not empty 
    foreach ($values as $attr=>$val) { 
    $menu = str_replace('%' . $attr . '%', stripslashes($val), $menu); 
    } 
    echo $menu; 
    // [...} 
} // <-- don't forget to close the if statement just after the end of the foreach statement 

希望有所帮助。

来源：get_option()