致命錯誤：不能在寫入上下文中使用函數返回值

Question

致命錯誤：無法在/ home4/tigas44/public_html/wp-content/themes/cardealer/includes/menus/menus.php線67上

可以看出： http://firstnationsautomobileapproved.com/

它指的是下面的行;

if(!isset($_COOKIE['cars']) || empty(json_decode($_COOKIE['cars']))) { 

從塊：

$compareClass = ""; 
if(!isset($_COOKIE['cars']) || empty(json_decode($_COOKIE['cars']))) { 
$compareClass = esc_attr(' style=display:none'); 
} 

Answer 1

的empty()功能似乎是你的問題的原因。文檔說以下：

Prior to PHP 5.5, empty() only supports variables; anything else will result in a parse error. In other words, the following will not work: empty(trim($name)). Instead, use trim($name) == false.

因此，嘗試你的代碼改成這樣：

$compareClass = ""; 
if(!isset($_COOKIE['cars']) || json_decode($_COOKIE['cars']) == false) { 
$compareClass = esc_attr(' style=display:none'); 
}