Question

我曾尝试使用PHP和SQL创建一个考勤系统。插入部分运行良好，但我想检查出勤记录的数据库是否已经存储。如果已存储，则回显已存储，否则将时间和日期插入数据库表。但是该守则不起作用。

每次我单击Intime按钮，在每个按钮上单击存储在数据库中的时间和日期。

代码如下：

 $eid=$_SESSION['emplogin'];

 $sql = "SELECT * from  tbl_employees where EmailId=:eid";
 $query = $dbh -> prepare($sql);
 $query->bindParam(':eid',$eid,PDO::PARAM_STR);

$query->execute();
$results=$query->fetchAll(PDO::FETCH_OBJ);

$id = $result->EmpId;

if(isset($_POST['intime']))
{
     date_default_timezone_set('Asia/Kolkata');
     $sql    = "SELECT date FROM tbl_in_time_attendance where EmpId = :eid ORDER BY tbl_in_time_attendance.date DESC LIMIT 1";
     $query  = $dbh->prepare($sql);
     $query->bindParam(':eid',$eid,PDO::PARAM_STR);
     $query->execute();
     $result = $query->fetchAll(PDO::FETCH_OBJ);
     $dbdate = date('Y-m-d', strtotime($result->date));
     $date   = date('Y-m-d');

     if($dbdate != $date)
     {
         $sql = "INSERT INTO tbl_in_time_attendance (EmpId)VALUES (:id)";
         $query = $dbh->prepare($sql);
         $query->bindParam(':id',$id,PDO::PARAM_STR);
         $query->execute();
     } 
     else
     {
         $message= "In Time Of today is already stored";
        echo "<script type='text/javascript'>alert('$message');</script>";
     }
}

Answer 1

您正在将数据库日期时间与当前日期时间进行比较，并且永远不会相同，因此您必须比较日期

尝试下面的代码，它应该可以按预期工作，

if(isset($_POST['intime']))
{
    date_default_timezone_set('Asia/Kolkata');
    $sql    = "SELECT date FROM tbl_in_time_attendance where EmpId = :eid ORDER BY tbl_in_time_attendance.date DESC LIMIT 1";
    $query  = $dbh->prepare($sql);
    $query->bindParam(':eid',$eid,PDO::PARAM_STR);
    $query->execute();
    $result = $query->fetchAll(PDO::FETCH_OBJ);
    $dbdate = date('Y-m-d', strtotime($result->date));
    $date   = date('Y-m-d');

    if($dbdate != $date) {
        $sql = "INSERT INTO tbl_in_time_attendance (EmpId)VALUES (:id)";
        $query = $dbh->prepare($sql);
        $query->bindParam(':id',$id,PDO::PARAM_STR);
        $query->execute();
    } else {
        $message= "In Time Of today is already stored";
        echo "<script type='text/javascript'>alert('$message');</script>";
    }
}

在php中重复插入数据库

1 个答案: