我设计的表格在大约一小时前工作正常。现在无论我做什么，我似乎得到一个错误消息，因为我有一些验证代码来检查是否已完成某些必填字段。
这是我的完整代码：
<! Code to check that the user has logged into to view this page !>
<?php
session_start();
if (!(isset($_SESSION['login']) && $_SESSION['login'] != '')) {
header ("Location: login.php");
}
?>
<!Connection details for connecting to mysql database!>
<?php
$connection = mysql_connect("localhost", "username", "password");
if (!$connection){
die("database connection failed: " . mysql_error());
}
//Select which database you want to connect to
$db_select = mysql_select_db("databasename" , $connection);
if (!$db_select){
die("An error occurred: " . mysql_error());
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Op Tech Database - Add Record</title>
</head>
<!Code to Create drop down menu's!>
<?php
//Code for collectiing values for Student Names drop down drop
$result1=mysql_query("SELECT studentID, studentName FROM students");
$options1="";
while ($row=mysql_fetch_array($result1)) {
$id=$row["studentID"];
$first=$row["studentName"];
$options1.="<OPTION VALUE=\"$first\">".$first.'</option>';
}
//Code for getting tutors names in drop down list
$result2=mysql_query("SELECT staffID, tutorName FROM staff");
$options2="";
while ($row=mysql_fetch_array($result2)) {
$id=$row["staffID"];
$first=$row["tutorName"];
$options2.="<OPTION VALUE=\"$first\">".$first.'</option>';
}
?>
<body>
<link rel="stylesheet" type="text/css" href="ex1.css" >
<link rel="stylesheet" media="only screen and (max-device-width: 1024px)" href="ipad.css" type="text/css" />
<!Create HTML elements!>
<form name="myform" form method="post">
<h1 align="center"><a href="form.php"><img src="colour_logo_400.jpg" alt="University Logo" width="400" height="185" /></a></h1>
<h1 align="center">Dental Hygiene Operative Technique Database</h1>
<h2 align="center">Welcome to the Dental Hygiene Operative Technique Database v1</h2>
<p align="left"> </p>
<p align="left">Student Name(*)</p>
<p align="left">
<! Drop Down Menu to get student names from database !>
<SELECT NAME=studentName >
<OPTION VALUE=0 selected="selected" >
<?php if(isset($_POST['studentName'])) echo $_POST['studentName'];?>
<?php echo $options1?>
</SELECT>
<p align="left">Tutor Name
(*)<p align="left">
<! Drop Down Menu to get tutor names from database !>
<select name=tutorName>
<option value=0>
<?php if(isset($_POST['tutorName'])) echo $_POST['tutorName'];?>
<?php echo $options2 ?> </option>
</select>
<p align="left">
<p align="left"><br>
Procedure(*)
<input type="text" name="procedure" value="<?php if(isset($_POST['procedure'])) echo $_POST['procedure'];?>" />
(*)
<p align="left">
Student Reflection:
(*)<br>
<textarea name="studentReflection" cols="75" rows="5"><?php if(isset($_POST['studentReflection'])) echo $_POST[ 'studentReflection'];?></textarea>
<p align="left">
<select name=grade id=grade>
<option value="">Grade </option>
<option value="N" <?php if (isset($_POST['grade']) && $_POST['grade'] == "N") { echo 'selected="selected"';} ?>>N</option>
<option value="B" <?php if (isset($_POST['grade']) && $_POST['grade'] == "B") { echo 'selected="selected"';} ?>>B</option>
<option value="C" <?php if (isset($_POST['grade']) && $_POST['grade'] == "C") { echo 'selected="selected"';} ?>>C</option>
</select>
(*)
<p align="left">
<SELECT NAME=professionalism>
<OPTION VALUE="">Professionalism
<OPTION VALUE="U" <?php if (isset($_POST['professionalism']) && $_POST['professionalism'] == "U") {
echo 'selected="selected"';} ?>>U</option>
<OPTION VALUE="S" <?php if (isset($_POST['professionalism']) && $_POST['professionalism'] == "S") {
echo 'selected="selected"';} ?>>S</option>
<OPTION VALUE="E" <?php if (isset($_POST['professionalism']) && $_POST['professionalism'] == "E") {
echo 'selected="selected"';} ?>>U</option>
</SELECT>
</SELECT>
<SELECT NAME=communication>
<OPTION VALUE="">Communication
<OPTION VALUE="U" <?php if (isset($_POST['communication']) && $_POST['communication'] == "U") {
echo 'selected="selected"';} ?>>U</option>
<OPTION VALUE="S" <?php if (isset($_POST['communication']) && $_POST['communication'] == "S") {
echo 'selected="selected"';} ?>>S</option>
<OPTION VALUE="E" <?php if (isset($_POST['communication']) && $_POST['communication'] == "E") {
echo 'selected="selected"';} ?>>U</option>
</SELECT>
Alert:
<input type="checkbox" value="YES" name="alert" >
<br>
<br>
Dispute:
<input type="checkbox" value="YES" name="dispute">
<p align="left">Tutor Comments:
<p align="left">
<textarea name="tutorComments" cols="75" rows="5"><?php if(isset($_POST['tutorComments'])) echo $_POST['tutorComments'];?>
</textarea>
<p align="left">
<!Submit buttons for the form!>
Password
<INPUT TYPE = 'PASSWORD' Name ='password' value="" maxlength="16" autocomplete="off"><br><br>
<input type="submit" name="mattbutton" class="mattbutton" value="Update Database" name="submit"/>
<input type='button' name="mattbutton" class="mattbutton" value='Logout' onClick="window.location.href='logout.php'">
<input type="hidden" name="submited" value="true" />
<p align="left">
<?php
//Code to turn off error reporting
//error_reporting(0);
//Error Message to display if all the correct fields are not completed.
if(isset($_REQUEST['submited'])) {
$options1 = $_POST['studentName'];
$options2 = $_POST['tutorName'];
$procedure = htmlspecialchars($_POST['procedure']);
$grade = $_POST['grade'];
$studentReflection = htmlspecialchars($_POST['studentReflection']);
$professionalism = $_POST['professionalism'];
$communication = $_POST['communication'];
$tutorComments = htmlspecialchars($_POST ['tutorComments']);
$masterpass = $_POST['password'];
$dispute = $_POST['dispute'];
$alert = $_POST['alert'] ;
$errors = 'Update Failed:';
//Code to check that the student picked there name
if(empty($_POST['studentName']))
{
$errors .= "You did not enter the student name<br/>";
}
//Code to check that the Tutor Name field is completed
if(empty($_POST['tutorName'] ))
{
$errors .="You did not select a tutor<br/>";
}
//Code to check that the Procedure field is completed
if(empty($_POST['procedure'] ))
{
$errors .="You did not enter a procedure<br/>";
}
//Code to check that the Grade field is completed
if(empty($_POST['grade'] ))
{
$errors .="You did not enter a grade<br/>";
}
//Code to check that the Student Reflection field is completed
if(empty($_POST['studentReflection'] ))
{
$errors .="You did not enter a reflection<br/>";
}
//Code to check if the tick box is checked that the tutor comment is entered
if( !strlen($_POST['tutorComments']) && isset($_POST['alert'] ))
{
$errors .="You must enter a reasan why you ticked the alert box";
}
//Code to check the password field is completed and correct
if (empty($_POST['password']))
{
$errors .="You did not enter you password";
}
if(!empty($errors))
{
echo '<h3>' . $errors . '</h3>';
exit();
}
}
if (!empty($_POST['password']))
{
//==========================================
// ESCAPE DANGEROUS SQL CHARACTERS
//==========================================
function quote_smart($value, $handle) {
if (get_magic_quotes_gpc()) {
$value = stripslashes($value);
}
if (!is_numeric($value)) {
$value = "'" . mysql_real_escape_string($value, $handle) . "'";
}
return $value;
}
if ($_SERVER['REQUEST_METHOD'] == 'POST'){
$masterpass = $_POST['password'];
$masterpass = htmlspecialchars($masterpass);
//==========================================
// CONNECT TO THE LOCAL DATABASE
//==========================================
$user_name = "username";
$pass_word = "password";
$database = "databasename";
$server = "host";
$db_handle = mysql_connect($server, $user_name, $pass_word);
$db_found = mysql_select_db($database, $db_handle);
if ($db_found) {
$masterpass = quote_smart($masterpass, $db_handle);
$SQL = "SELECT * FROM masterpass WHERE password = $masterpass";
$result = mysql_query($SQL);
$num_rows = mysql_num_rows($result);
//====================================================
// CHECK TO SEE IF THE $result VARIABLE IS TRUE
//====================================================
if ($result) {
if ($num_rows > 0) {
echo "";
}
else {
echo "Your Password was not recognised";
exit();
}
}
mysql_close($db_handle);
}
}
//===========================================================
//Code to connect to the database and insert the POST values
//===========================================================
mysql_connect ("host", "username" , "password") or die ('Error: ' .mysql_error());
mysql_select_db ("dhoptech2011");
$query= "INSERT INTO entry (entryID, studentName , tutorName , procedureName , grade , studentReflection , tutorComments, professionalism , communication , alert , dispute ) VALUES ('NULL', '".$options1."' , '".$options2." ' , '".$procedure."' , '".$grade."' , '".$studentReflection."', '".$tutorComments."' , '".$professionalism."' , '".$communication."' , '".$alert."' , '".$dispute."' )";
mysql_query($query) or die ('Error : You are attempting to enter information which cannot be stored or contains code. Please refesh the from and try again<br>' .mysql_error());
echo "<h4>The Database Has been updated. Thanks </h4>" ;
}
?>
</FORM>
<p> <a href="form.php">Enter another procedure </a>
<p> </p>
<p> </p>
</body>
</html>
我知道这是很多代码，但我仍然在努力学习最佳实践。
直到大约一个小时前，该表单似乎正在运行，但现在即使我用所有必填字段填写表单，它也不会将信息传递给我的数据库表。
知道我可能出错了吗？
答案 0 :(得分：1)
您的$errors变量永远不会为空！
您可以将其设置为默认字符串：
$errors = 'Update Failed:';
然后继续执行一堆if语句来检查条件，但是在退出之前，您从来没有else个案例来清除$errors变量：
if(!empty($errors))
{
echo '<h3>' . $errors . '</h3>';
exit();
}
将初始行更改为空字符串。
$errors = '';
然后在完成所有其他检查之后，如果您希望将其添加到开头，可以将Update failed:字符串添加到开头：
if(!empty($errors))
{
echo "<h3> Update failed: $errors</h3>";
exit();
}