我正在尝试在连接了mysql数据库的php中执行更新功能。我将更新代码放在名为parcelEdit.php的文件中。这是我的parcelEdit.php代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Updating Parcel Details</title>
<link rel="stylesheet" href="css/style.css" />
</head>
<?php
include('db.php');
if(isset($_POST['update']))
{
$parcelID = $_POST['parcelID'];
$owner = $_POST['owner'];
$rcv_date = $_POST['rcv_date'];
$pck_date = $_POST['pck_date'];
$status = $_POST['status'];
// checking empty fields
if (empty($parcelID) || empty($owner) || empty($rcv_date)||
empty($pck_date)|| empty($status)) {
if(empty($parcelID)) {
echo "<font color='red'>Parcel ID field is empty.</font><br/>";}
if(empty($owner)) {
echo "<font color='red'>Owner Name field is empty.</font><br/>";}
if(empty($rcv_date)) {
echo "<font color='red'>Received Date field is empty.</font><br/>";}
if(empty($pck_date)) {
echo "<font color='red'>Picked Up Date field is empty.</font><br/>";}
if(empty($status)) {
echo "<font color='red'>Parcel Status field is empty.</font><br/>";}
} else {
//updating the table
$result = mysql_query("UPDATE parcel SET parcelOwner = '$owner',
dateReceived = '$rcv_date', datePickup = '$pck_date', parcelStatus =
'$status' WHERE parcelID='$parcelID'");
//redirectig to the display page. In our case, it is index.php
header("Location: parcelView.php");
}
}
?>
<?php
//getting id from url
if(isset($_GET['parcelID'])){
$parcelID = $_GET['parcelID'];
}
//selecting data associated with this particular id
if(isset($parcelID)){
$result = mysql_query("SELECT * FROM parcel WHERE parcelID='$parcelID'");
while($res = mysql_fetch_array($result))
{
//$mem_id= $res['mem_id'];
$parcelID= $res['parcelID'];
$owner= $res['parcelOwner'];
$rcv_date= $res['dateReceived'];
$pck_date= $res['datePickup'];
$status= $res['parcelStatus'];
}}
?>
<body>
<body style='background: url(mailbox.jpg)'>
<div align="center">
<h1>Update Parcel Details</h1>
<form method="post" enctype="multipart/form-data">
<table>
<tr>
<Td> PARCEL ID : </td>
<td><input name="parcelID" type="text" id="parcelID" value=<?php
echo $parcelID;?>></td>
</tr>
<tr>
<Td> OWNER : </td>
<td><input name="owner" type="text" id="owner" value=<?php echo
$owner;?>></td>
</tr>
<tr>
<Td> DATE RECEIVED : </td>
<td><input name="rcv_date" type="text" id="rcv_date" value=<?php
echo $rcv_date;?>></td>
</tr>
<tr>
<Td> DATE PICKED UP : </td>
<td><input name="pck_date" type="text" id="pck_date" value=<?php
echo $pck_date;?>></td>
</tr>
<tr>
<Td> STATUS : </td>
<td><input name="status" type="text" id="status" value=<?php
echo $status;?>></td>
</tr>
<tr>
<Td colspan="2" align="center">
<input type="submit" value="Update Records" name="update"/>
</Td>
</tr>
</table>
</form>
</div>
</body>
</html>
我得到了这些错误
注意:未定义的变量:parcelID in 第77行的C:\ xampp \ htdocs \ psmtest1 \ parcelEdit.php
注意:未定义的变量:所有者 第81行的C:\ xampp \ htdocs \ psmtest1 \ parcelEdit.php
注意:未定义的变量:rcv_date in 第85行的C:\ xampp \ htdocs \ psmtest1 \ parcelEdit.php
注意:未定义的变量:pck_date in 第89行的C:\ xampp \ htdocs \ psmtest1 \ parcelEdit.php
注意:未定义的变量:状态 第93行的C:\ xampp \ htdocs \ psmtest1 \ parcelEdit.php
老实说,即使参考了不同的代码示例,我也找不到解决这个问题的方法。
答案 0 :(得分:0)
尝试在else
条件
if(isset($parcelID))
if(isset($_GET["parcelID"])){
$parcelID = mysql_real_escape_string($_GET["parcelID"]);
$result = mysql_query("SELECT * FROM parcel WHERE parcelID = '$parcelID'");
while($res = mysql_fetch_array($result))
{
//$mem_id = $res['mem_id'];
$parcelID = $res['parcelID'];
$owner = $res['parcelOwner'];
$rcv_date = $res['dateReceived'];
$pck_date = $res['datePickup'];
$status = $res['parcelStatus'];
}
} else {
$parcelID = '';
$owner = '';
$rcv_date = '';
$pck_date = '';
$status = '';
}
isset()
条件,因此我删除了第一个if(isset($_GET["parcelID"]))
条件,然后直接用if(isset($parcelID))
替换它。mysqli_*
扩展名代替deprecated mysql_*
。答案 1 :(得分:0)
您可以根据自己的想法检查变量是否即将到来。您可以在 var_dump()或 print_r()的帮助下转储使用POST方法发送的所有变量 -
<?php
include('db.php');
if(isset($_POST['update']))
{
echo '<pre>';
print_r($_POST);
echo '</pre>';
$parcelID = $_POST['parcelID'];
$owner = $_POST['owner'];
$rcv_date = $_POST['rcv_date'];
$pck_date = $_POST['pck_date'];
$status = $_POST['status'];
...
?>
您可以查看$ _POST中的键并执行所需的更改。