我的代码如下（不包含任何HTML，没有错误/警告/通知）。程序执行正常。我遇到的唯一问题是当我尝试更改数据库中的member_id和date字段时 - 它不起作用！正如您所看到的，我在今天为member_id和dd（在表单中使用）的相同字段mmid（在表单中使用）使用了单独的名称。因此，当用户输入不同的值时，将其分配给mmid和dd，同时将原始值保持为member_id和dd，从而允许我正确执行更新查询。所有其他字段更新按预期完成。 db中的所有字段都不是primary / unique / index。你能帮我找一下问题所在吗？
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
// define variables and set to empty values
$memberErr = $employeeErr = $dateErr = $blankfieldErr ="";
$mmid = $dd = $member_id = $employee_id = $paid_installment = $savings_deposit = $late_fee = $today = $dayx = $monthx = $yearx = "";
if (isset($_POST['SubmitFirst']))
{
if (empty($_POST["member_id"])) {
$memberErr = "আপনি সদস্যর আইডি দিতে ভুলে গেছেন";
} else {
$member_id = test_input($_POST["member_id"]);
}
if(!empty($_POST["dayx"]))
{
$dayx = test_input($_POST["dayx"]);
}
if(!empty($_POST["monthx"]))
{
$monthx = test_input($_POST["monthx"]);
}
if(!empty($_POST["yearx"])) // if all of them are selected
{
$yearx = test_input($_POST["yearx"]);
}
if(!empty($_POST["dayx"]) and !empty($_POST["monthx"]) and !empty($_POST["yearx"])){
$today= $yearx. "-" . $monthx. "-" . $dayx; }
else { $dateErr = "আপনি দিন / মাস / বছর লিখতে ভুলে গেছেন"; }
}
if (isset($_POST['Submit']))
{
echo $mmid;
echo " ";
echo $dd;
if (empty($_POST["mmid"])) {
$memberErr = "আপনি সদস্যর আইডি দিতে ভুলে গেছেন";
} else {
$mmid = test_input($_POST["mmid"]);
}
if (empty($_POST["dd"])) {
$dateErr = "আপনি সদস্যর আইডি দিতে ভুলে গেছেন";
} else {
$dd = test_input($_POST["dd"]);
}
if (empty($_POST["employee_id"])) {
$employeeErr = "আপনি কর্মীর আইডি দিতে ভুলে গেছেন";
} else {
$employee_id = test_input($_POST["employee_id"]);
}
if (empty($_POST["paid_installment"]) and empty($_POST["savings_deposit"]) and empty($_POST["late_fee"])) {
$blankfieldErr = "আপনি installment/savings/late_fee দিতে ভুলে গেছেন";
} else {
$paid_installment = test_input($_POST["paid_installment"]);
$savings_deposit = test_input($_POST["savings_deposit"]);
$late_fee = test_input($_POST["late_fee"]);
}
$servername = "localhost";
$username = "xxxxx";
$password = "yyyyy";
$dbname = "zzzzz";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// sql to UPDATE a record
$sql1 = "UPDATE daily_collection set date='$dd', member_id='$mmid', employee_id='$employee_id', paid_installment='$paid_installment', savings_deposit='$savings_deposit', late_fee='$late_fee' where member_id='$member_id' and date='$today'";
if ($result1=mysqli_query($conn,$sql1)) {
echo "<h2>". "সাবাস আপনি ঠিকভাবে তথ্য রেকর্ড করেছেন!". "</h2>";
} else {
echo "<h2>"."প্রোগ্রামে কিছু একটা সমস্যা হয়েছে, সুদিন স্যার-এর সাথে যোগাযোগ করুন ". "</h2>";
}
}
?>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
সদস্যর আইডি <input type="text" name="member_id" value="<?php echo $member_id;?>" size="50">
<span class="error"> <?php echo $memberErr;?></span>
<br><br>
তারিখ দিন <input type="text" name="dayx" value="<?php echo $dayx;?>" size="10"> মাস <input type="text" name="monthx" value="<?php echo $monthx;?>" size="10"> বছর <input type="text" name="yearx" value="<?php echo $yearx;?>" size="10">
<span class="error"> <?php echo $dateErr;?></span>
<br><br>
<center><input type="submit" name="SubmitFirst" value="SubmitFirst"></center><br>
</form>
<?php
if(isset($_POST['SubmitFirst']) and $member_id!="" and $today!="")
{
$servername = "localhost";
$username = "xxxxx";
$password = "yyyyy";
$dbname = "zzzzz";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql="select * from daily_collection where member_id='$member_id' and date='$today'";
if ($result=mysqli_query($conn,$sql))
{
while ($row=mysqli_fetch_row($result))
{
$dd=$row["0"];
$mmid=$row["1"];
$employee_id=$row["2"];
$paid_installment=$row[3];
$savings_deposit=$row[4];
$late_fee=$row[5];
}
echo $member_id;
echo " ";
echo $today;
}
else { echo "no such entry found";}
?>
<center><h2>দৈনিক কালেকশন এন্ট্রি ফর্ম</h2></center>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
সদস্যর আইডি <input type="text" name="mmid" value="<?php echo $mmid;?>" size="50">
<span class="error"> <?php echo $memberErr;?></span>
<br><br>
কর্মীর আইডি <input type="text" name="employee_id" value="<?php echo $employee_id;?>" size="50">
<span class="error"> <?php echo $employeeErr;?></span>
<br><br>
কিস্তির টাকা <input type="text" name="paid_installment" value="<?php echo $paid_installment;?>" size="50">
<br><br>
সঞ্চয় <input type="text" name="savings_deposit" value="<?php echo $savings_deposit;?>" size="50">
<br><br>
লেট ফী <input type="text" name="late_fee" value="<?php echo $late_fee;?>" size="50">
<span class="error"> <?php echo $blankfieldErr;?></span>
<br><br>
তারিখ <input type="text" name="dd" value="<?php echo $dd;?>" size="10">
<span class="error"> <?php echo $dateErr;?></span>
<br><br>
<center><input type="submit" name="Submit" value="Submit"></center><br>
</form>
<?php
}
if(!empty($_POST['Submit']))
{
}
?>
答案 0 :(得分：0)
在if (isset($_POST['Submit']))
{这个区域内你有打印$mmid，因为$mmid没有在这里设置所以它不会打印任何内容。要获得确切的更新查询，请回复$sql1
以下部分更新
while ($row=mysqli_fetch_row($result))
{
$dd=$row["0"];
$mmid=$row["1"];
$employee_id=$row["2"];
$paid_installment=$row[3];
$savings_deposit=$row[4];
$late_fee=$row[5];
}
**while ($row=mysqli_fetch_assoc($result))** or instead of $row["0"] put $row[0] or exact column name like $row['date']