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php mysql 表单将结果从数据库传递到原始表单字段

转载 作者:行者123 更新时间:2023-11-30 00:40:09 24 4
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我有一个问题,我的所有方法都有效,但我一生都无法弄清楚如何将 sql 查询的结果回显回每条查询信息的原始表单字段行。下面是我的代码示例。

附注我尝试使用变量保存相关数据来回显 sql 代码底部的原始表,但它只是在页面底部创建一个重复的表单表。看代码

<html>
<title> Student Main Record:</title>
<center><b><font size="15"><u>Student Main Record</center></font></b><br><BR></u>
<form method="POST" action="test.php">
<table align="center" width="90%" border="0">
<tr>
<td>
<table width="100%" border="0"><center><font size="6"><b>Student Information:</center</table></font>
<table border="0">
<tr><td>Panther ID</td><td><input type="text" value="" size="50" maxlength="7" name="PID"></td></tr>
<tr><td>First Name</td><td><input type="text" value="" size="50" maxlength="50" name="firstName"></td></tr>
<tr><td>Middle Name</td><td><input type="text" value="" size="50" maxlength="50" name="middleName"></td></tr>
<tr><td>Last Name</td><td><input type="text" value="" size="50" maxlength="50" name="lastName"></td></tr>
<tr><td>Age</td><td><input type="text" value="" size="50" maxlength="3" name="age"></td></tr>
<tr><td>Gender</td><td><input type="radio" checked name="Gender" value="Female">Female <input type="radio" name="Gender" value="Male">Male</td></tr>
<tr><td>Country</td><td><input type="text" value="" size="50" maxlength="30" name="country"></td></tr>
</td></tr></tr></tr>
<tr></tr>
<tr></tr>
<tr></tr>
<tr><td>Address1</td><td><input type="text" value="" size="50" maxlength="50" name="add1"></td></tr>
<tr><td>Address2</td><td><input type="text" value="" size="50" maxlength="50" name="add2"></td></tr>
<tr><td>City</td><td><input type="text" value="" size="50" maxlength="50" name="city"></td></tr>
<tr><td>State</td><td><input type="text" value="" size="50" maxlength="50" name="state"></td></tr>
<tr><td>Zip Code</td><td><input type="text" value="" size="50" maxlength="10" name="zip"></td></tr>
<tr><td>Primary Tel #</td><td><input type="text" value="" size="50" maxlength="20" name="tel1"></td></tr>
<tr><td>Secondary Tel #</td><td><input type="text" value="" size="50" maxlength="20" name="tel2"></td></tr>
<tr><td>Email</td><td><input type="text" value="" size="50" maxlength="50" name="email"></td></tr>
</table>
</td>
<td>
<table width="100%" border="0">
</table>
<table border="0"><br><br>
<tr><font size=5pt><center>&nbsp&nbsp&nbsp&nbspEmergency Contact Information:</tr></font></center><tr><tr><tr><tr><Tr><tr></tr></tr></tr>
<tr><td>First Name</td><td><input type="text" value="" size="50" maxlength="50" name="ECfirstName"></td></tr>
<tr><td>Middle Name</td><td><input type="text" value="" size="50" maxlength="50" name="ECmiddleName"></td></tr>
<tr><td>Last Name</td><td><input type="text" value="" size="50" maxlength="50" name="EClastName"></td></tr>
<tr><td>Age</td><td><input type="text" value="" size="50" maxlength="3" name="ECage"></td></tr>
<tr><td>Gender</td><td><input type="radio" checked name="Gender1" value="Female">Female <input type="radio" name="Gender1" value="Male">Male</td></tr>
<!-- <tr><td>Social Security</td><td><input type="text" size="50" maxlength="10" name="ECss">-->
<tr><td>Country</td><td><input type="text" value="" size="50" maxlength="30" name="ECcountry"></td></tr>
</td></tr></tr>
</tr>
<tr></tr>
<tr></tr>
<tr></tr>
<tr><td>Address1</td><td><input type="text" value="" size="50" maxlength="50" name="ECadd1"></td></tr>
<tr><td>Address2</td><td><input type="text" value="" size="50" maxlength="50" name="ECadd2"></td></tr>
<tr><td>City</td><td><input type="text" value="" size="50" maxlength="50" name="ECcity"></td></tr>
<tr><td>State</td><td><input type="text" value="" size="50" maxlength="50" name="ECstate"></td></tr>
<tr><td>Zip Code</td><td><input type="text" value="" size="50" maxlength="10" name="ECzipCode"></td></tr>
<tr><td>Primary Tel #</td><td><input type="text" value="" size="50" maxlength="20" name="ECtel1"></td></tr>
<tr><td>Secondary Tel #</td><td><input type="text" value="" size="50" maxlength="20" name="ECtel2"></td></tr>
<tr><td>Email</td><td><input type="text" value="" size="50" maxlength="50" name="ECemail"></td></tr>
</table>
</td>
</tr>
</table>
<tr>
<td>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<table width="100%" border="0">
<tr>
<tr><br>
<td align="center">
<input type="submit" name="find" value="Find">
<input type="submit" name="save" value="Save">
<input type="submit" name="modify" value="Modify">
<input type="submit" name="delete" value="Delete">
</td>
</tr>
</tr>

<tr>
<td>
</td>
</tr>
</table>

下面的 PHP 代码 - 每种方法都有效,但我想回显它们以填充上面的原始表单字段。

if (!empty($_POST['save']))
{

$connection = mysqli_connect("xxxxxxx","xxxxxxx","xxxxxxxx");
// Check connection
if (!$connection)
{
echo "Connection failed: " . mysqli_connect_error();
}
else

//select a database
$dbName="spr14_aglic006";
$db_selected = mysqli_select_db($connection,$dbName);
//confirm connection to database
if (!$db_selected)
{
die ('Can\'t use foo : ' . mysqli_error());
}
mysqli_query($connection,"INSERT INTO students
(StudentID,
FirstName,
LastName,
MiddleName,
Address1,
Address2,
City,
State,
Country,
Zip,
Telephone1,
Telephone2,
ECFirstName,
ECLastName,
ECMiddleName,
ECAddress1,
ECAddress2,
ECCity,
ECState,
ECCountry,
ECZip,
ECTelephone1,
ECTelephone2)
VALUES
('".$_POST['PID']."',
'".$_POST['firstName']."',
'".$_POST['lastName']."',
'".$_POST['middleName']."',
'".$_POST['add1']."',
'".$_POST['add2']."',
'".$_POST['city']."',
'".$_POST['state']."',
'".$_POST['country']."',
'".$_POST['zip']."',
'".$_POST['tel1']."',
'".$_POST['tel2']."',
'".$_POST['ECfirstName']."',
'".$_POST['EClastName']."',
'".$_POST['ECmiddleName']."',
'".$_POST['ECadd1']."',
'".$_POST['ECadd2']."',
'".$_POST['ECcity']."',
'".$_POST['ECstate']."',
'".$_POST['ECcountry']."',
'".$_POST['ECzipCode']."',
'".$_POST['ECtel1']."',
'".$_POST['ECtel2']."')");
echo "Record created.";
mysqli_close($connection);
}





if (!empty($_POST['find']))
{

$connection = mysqli_connect("xxxxxxx","xxxxxxx","xxxxxxxx");
// Check connection
if (!$connection)
{
echo "Connection failed: " . mysqli_connect_error();
}

$dbName="spr14_aglic006";
mysqli_select_db($connection,$dbName) or die(mysqli_error());


$result = mysqli_query($connection,"SELECT * FROM students WHERE StudentID='".$_POST['PID']."'");
if (!$result)
{echo"No record found" . mysqli_error($connection);}


while($row = mysqli_fetch_array($result))
{
echo $row['StudentID'] . " " . $row['FirstName'] . " " . $row['LastName'] . " " .
$row['MiddleName'] . " " . $row['Address1'] . " " . $row['Address2'] . " " .
$row['City'] . " " . $row['State'] . " " . $row['Country'] . " " .
$row['Zip'] . " " . $row['Telephone1'] . " " . $row['Telephone2'] . " " .
$row['ECFirstName'] . " " . $row['ECLastName'] . " " . $row['ECMiddleName'] . " " .
$row['ECAddress1'] . " " . $row['ECAddress2'] . " " . $row['ECCity'] . " " .
$row['ECState'] . " " . $row['ECCountry'] . " " . $row['ECZip'] . " " .
$row['ECTelephone1'] . " " . $row['ECTelephone2'];
mysqli_close($connection);
}

}


if (!empty($_POST['modify']))
{
$connection = mysqli_connect("xxxxxxx","xxxxxxx","xxxxxxxx");
// Check connection
if (!$connection)
{
echo "Connection failed: " . mysqli_connect_error();
}
else
{
//select table
$dbName="spr14_aglic006";
mysqli_select_db($connection,$dbName) or die(mysqli_error());
echo "Database Found! <br>";

$query =("UPDATE students
SET FirstName='".$_POST['firstName']."', LastName='".$_POST['lastName']."'
WHERE StudentID='".$_POST['PID']."'");

$res = mysqli_query($connection,$query);

if ($res)
{
echo "<p>Record Updated<p>";
}
else
{
echo "Problem updating record. MySQL Error: " . mysqli_error($connection);
}
}
mysqli_close($connection);
}






if (!empty($_POST['delete']))
{

$connection = mysqli_connect("xxxxxxx","xxxxxxx","xxxxxxxx");

// Check connection
if (!$connection)
{
echo "Connection failed: " . mysqli_connect_error();
}
else
{
//select table
$dbName="spr14_aglic006";
mysqli_select_db($connection,$dbName) or die(mysqli_error());
echo "Database Found! <br>";
$sql =("DELETE FROM students WHERE StudentID='".$_POST['PID']."'");

$retval = mysqli_query($connection,$sql);
if($retval)
{
echo "Deleted data successfully\n";
}
else
echo "Record not found";
}
mysqli_close($connection);
}
echo '<center><b><font size="15"><u>Student Main Record</center></font></b><br><BR></u>
<tr><td>Panther ID</td><td><input type="text" value=".$PID." size="50" maxlength="7"></td></tr>';
?>

最佳答案

我假设您将表单提交到同一页面,这很好。如果是这样,首先声明变量并将 sql 移至表单上方。然后对于每个表单字段,执行以下操作:

if(isset($_POST[PID]){
$pid = $_POST[PID];
}else{
$pid = "";
}

在 html 中,将每个变量放入关联表单元素的值中,以便在表单已提交时显示,如果表单尚未提交则显示为空。

<input type="text" value="$pid" size="50" maxlength="7" name="PID">

关于php mysql 表单将结果从数据库传递到原始表单字段,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21836401/

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