PHP isset功能

Question

if($line_of_text['EMPDesignation3'] == ''^$line_of_text['EmpName3'] == '') { 
         $error_status['success_msg'] = "emp designation3 and emp name3 not empty"; 
         $error_status['status'] = 0; 
         return $error_status; 
        } 

它顯示錯誤通知：未定義指數：EMPDesignation3在

Answer 1

嘗試以下代碼isset與XOR運算符：

if(isset($line_of_text['EMPDesignation3'])^isset($line_of_text['EmpName3'])) { 
    $error_status['success_msg'] = "emp designation3 and emp name3 not empty"; 
    $error_status['status'] = 0; 
    return $error_status; 
    }