Question

我的问题是当我编辑我的表格时有3行并保存数据，其插入3次，因为foreach循环而提供3个javascript警报

我不知道问题在哪里

    if(isset($_POST['btn_sub']))
{
    foreach($_POST['marks'] as $row=>$Act)
    {    
        $session=$_GET['session'];
        $cl_name=$_GET['cl_name'];
        $cl_section=$_GET['cl_section'];
        $exam=$_GET['exam'];
        $date=$_GET['date'];
        $subj = $_GET['subj'];

    $marks = mysql_real_escape_string($Act);
    $maxmarks = mysql_real_escape_string($_POST['maxmarks'][$row]);
    $passmarks = mysql_real_escape_string($_POST['passmarks'][$row]);
    $name = mysql_real_escape_string($_POST['name'][$row]);
    $rollno = mysql_real_escape_string($_POST['rollno'][$row]);
    $fname = mysql_real_escape_string($_POST['fname'][$row]);
    $attendance = mysql_real_escape_string($_POST['attendance'][$row]);

    $result = mysql_query("SELECT * FROM `ex_marks` WHERE `session`='$session' and `cl_name`='$cl_name' and `cl_section`='$cl_section' and `subject`='$subj' and `exam`='$exam' and `date`='$date' and `roll_no`='$rollno' and `obtainmarks`='$marks'");

    if (mysql_num_rows($result) == 0)
    {
       mysql_query("INSERT INTO `ex_marks` (`mid`, `session`, `cl_name`, `cl_section`, `name`, `fname`, `status`, `date`, `exam`, `roll_no`, `subject`, `maxmarks`, `passmarks`, `obtainmarks`)
        VALUES('', '$session', '$cl_name', '$cl_section', '$name','$fname', '$attendance', '$date', '$exam', '$rollno', '$subj', '$maxmarks','$passmarks','$marks')") or die(mysql_error());
        echo "<script type='text/javascript'>alert('Submitted Successfully!')</script>";
    }
    else
    {
        echo "<script type='text/javascript'>alert('Already Exist!')</script>";
    }
}
}

请参阅此代码

Answer 1

不要一直循环回复javascript。

knownIPs

$ i将决定何时发送成功消息。

Answer 2

You set $flg value. By using value alert once.    

if(isset($_POST['btn_sub']))
    {
        $flg=0;
        foreach($_POST['marks'] as $row=>$Act)
        {    
            $session=$_GET['session'];
            $cl_name=$_GET['cl_name'];
            $cl_section=$_GET['cl_section'];
            $exam=$_GET['exam'];
            $date=$_GET['date'];
            $subj = $_GET['subj'];

        $marks = mysql_real_escape_string($Act);
        $maxmarks = mysql_real_escape_string($_POST['maxmarks'][$row]);
        $passmarks = mysql_real_escape_string($_POST['passmarks'][$row]);
        $name = mysql_real_escape_string($_POST['name'][$row]);
        $rollno = mysql_real_escape_string($_POST['rollno'][$row]);
        $fname = mysql_real_escape_string($_POST['fname'][$row]);
        $attendance = mysql_real_escape_string($_POST['attendance'][$row]);

        $result = mysql_query("SELECT * FROM `ex_marks` WHERE `session`='$session' and `cl_name`='$cl_name' and `cl_section`='$cl_section' and `subject`='$subj' and `exam`='$exam' and `date`='$date' and `roll_no`='$rollno' and `obtainmarks`='$marks'");

        if (mysql_num_rows($result) == 0)
        {
           mysql_query("INSERT INTO `ex_marks` (`mid`, `session`, `cl_name`, `cl_section`, `name`, `fname`, `status`, `date`, `exam`, `roll_no`, `subject`, `maxmarks`, `passmarks`, `obtainmarks`)
            VALUES('', '$session', '$cl_name', '$cl_section', '$name','$fname', '$attendance', '$date', '$exam', '$rollno', '$subj', '$maxmarks','$passmarks','$marks')") or die(mysql_error());
            $flg=1;
        }
        else
        {
            $flg=0;
            exit;
        }
    }
    if($flg==1)
    {
         echo "<script type='text/javascript'>alert('Submitted Successfully!')</script>";    
    }
    else
    {
        echo "<script type='text/javascript'>alert('Already Exist!')</script>";
    }
    }

多行数据插入在php中提供多个警报

2 个答案: