PHP/SQL - 更新、执行并返回成功但数据库中没有更新

Question

我有以下 php/sql 请求:

连接成功，更新成功(返回success msg)，但是在phpMyAdmin中，数据库还没有更新。我做错了什么？

<?php 

{ // Connect and Test MySQL and specific DB (return $dbSuccess = T/F)

            $hostname = "localhost";
            $username = "root";
            $password = "";             
            $databaseName = "db_test";    
            $dbConnected = mysql_connect($hostname, $username, $password);
            $dbSelected = mysql_select_db($databaseName,$dbConnected);

            $dbSuccess = true;
            if ($dbConnected) {
                if (!$dbSelected) {
                    echo "DB connection FAILED<br /><br />";
                    $dbSuccess = false;
                }       
            } else {
                echo "MySQL connection FAILED<br /><br />";
                $dbSuccess = false;
            }
}  

//   Execute code ONLY if connections were successful   
if ($dbSuccess) {       

        // SQL to change country value from UK to United Kingdom 
        $company_SQLupdate = "UPDATE tCompany SET ";            
        $company_SQLupdate .= "COUNTRY = 'United Kingdom' ";            
        $company_SQLupdate .= "WHERE COUNTRY = 'UK' ";          
        if (mysql_query($company_SQLupdate))  { 
            echo "UPDATE tCompany.COUNTRY - SUCCESSFUL.<br /><br />";
        } else {
            echo "UPDATE tCompany.COUNTRY - FAILED.<br /><br />";
        }
}

?>

Answer 1

您确定数据库中有包含 country = 'UK' 的记录吗？

您可以更改显示完整查询的成功消息，然后尝试在 phpMyAdmin 中执行该语句并查看修改是否出现。