如何使用php检查更新是否完成

如何使用php检查所使用的查询是否更新我的表

下面是我的代码

$sql_query = "update companies set 
        first_name = '$first_name',
        last_name = '$last_name',
        designation = '$designation',
        company_name = '$company_name',
        street_address = '$street_address',
        city_code = '$city_code',
        telephone_number = '$telephone_number',
        mobile_number = '$mobile_number',
        fax_number = '$fax_number'
        where company_code='1001';";

    if (!mysqli_query($conn_1,$sql_query) )
    {
        $_SESSION['error_details'][0] = 'no';
        $_SESSION['error_details'][1] = 'Sorry, not update!';
    }
    else
    {
        $_SESSION['error_details'][0] = 'yes';
        $_SESSION['error_details'][1] = 'Thank you, update sucessfully!';   
    }

---

如何在“如果条件”中检查此更新返回受上次插入、更新、替换或删除查询影响的行数

mysqli\u infected\u rows（）

将返回受更新影响的行数

用于检查已更新的查询是否执行任何更新

if(mysqli_affected_rows($con) > 0) {
    //update performed
}

---

如果您正在更新的数据与数据库中的数据不同，PHP只会更新，一个好的做法是使用类或orm，如果您更喜欢纯PHP，则使用类或函数小心您正在做的事情（小心错误将在开发时显示在ly上）

$result=mysql\u query（$sqlString）或die（mysql\u eror（））；//然后你将确定没有错误；
if（mysql受影响的行（$result）函数返回上一次SELECT、INSERT、UPDATE、REPLACE或DELETE查询中受影响的行数

更多信息：


如果（$\u SESSION['error\u details'][0]='yes'）{//update coursed}或者{//update not coursed}
？手册没有提到错误处理吗？
$result = mysql_query($sqlString) or die(mysql_eror()); // then you will be sure there is no errors;

if (mysql_affected_rows ($result) <= 0) {
//do as you need for no changes on your database
} else {
//do as you want on database changed
}

$conn_1 = mysqli_connect("localhost", "DB_USER", "DB_PASSWORD", "DB_NAME");

    $sql_query = "update companies set 
        first_name = '$first_name',
        last_name = '$last_name',
        designation = '$designation',
        company_name = '$company_name',
        street_address = '$street_address',
        city_code = '$city_code',
        telephone_number = '$telephone_number',
        mobile_number = '$mobile_number',
        fax_number = '$fax_number'
        where company_code='1001'";

     mysqli_query($conn_1,$sql_query);

    if (mysqli_affected_rows($conn_1))
    {

        $_SESSION['error_details'][0] = 'yes';
        $_SESSION['error_details'][1] = 'Thank you, update sucessfully!';
    }
    else
    {
        $_SESSION['error_details'][0] = 'no';
        $_SESSION['error_details'][1] = 'Sorry, not update!';   
    }