抱歉！我的错.. 此代码显示用户注册表单，对帖子进行验证并将信息保存到文件中。
<html>
<head>
<style>
#main {
width: auto;
padding: 25px;
border: 25px solid green;
margin: 25px;
}
input[type=text]{
display:inline-block;
border: 1px solid #999;
height: 25px;
margin-bottom: 2em;
padding: .75em .5em;
}
input[type=password]{
display:inline-block;
border: 1px solid #999;
height: 25px;
margin-bottom: 2em;
padding: .75em .5em;
}
input[type=submit] {
color:#08233e;
font:bold 2.4em Futura, ‘Century Gothic’, AppleGothic, sans-serif;
font-size:90%;
cursor:pointer;
border: 2px solid blue;
}
.error {
color: #FF0000;
font: italic bold 15px arial;
}
</style>
</head>
<body>
<div id="main">
<?php
require_once 'Mail.php';
//dns101.comcast.net, Smtp.comcast.net
$fname = $lname = $uname = $pwd = $cpwd = $email = "";
$firsterr = $lasterr = $unameerr = $pwderr = $pwdmatch = $emailerr = "";
$isError=false;
if (isset($_POST['submit'])) {
validateInput();
if ($isError) {
display_form();
}
else {
process_form();
}
}
else {
display_form();// display form for the first time
}
function display_form() {
global $firsterr, $lasterr, $unameerr, $pwderr, $pwdmatch, $emailerr ;
echo "<h1>Registration</h1>";
echo "<form action = $_SERVER[SCRIPT_NAME] method=post>";
echo "<span class='error'> $pwdmatch </span><br><br>";
$value=isset($_POST['fname'])?$_POST['fname']:'';
echo "First Name:<input type='text' name='fname' size='50' maxlength='80' value=\"$value\" >";
echo "<span class='error'> $firsterr </span><br>";
$value=isset($_POST['lname'])?$_POST['lname']:'';
echo "Last Name:<input type='text' name='lname' size='50' maxlength='80' value=\"$value\" >";
echo "<span class='error'> $lasterr </span><br>";
$value=isset($_POST['email'])?$_POST['email']:'';
echo "Email:<input type='text' name='email' size='50' maxlength='80' value=\"$value\" >";
echo "<span class='error'> $emailerr </span><br>";
$value=isset($_POST['uname'])?$_POST['uname']:'';
echo "User Name:<input type='text' name='uname' size='50' maxlength='80' value=\"$value\" >";
echo "<span class='error'> $unameerr </span><br>";
echo "Password: <input type='password' name='pwd' size='50' maxlength='80' >";
echo "<span class='error'> $pwderr </span><br>";
echo <<<HTML
Confirm Password: <input type="password" name="cpwd" size="50" maxlength="80" ><br>
<input type="submit" name="submit" value="Submit">
</form>
HTML;
}
function cleanData($data) {
$data = stripslashes(trim($data));
$data = htmlspecialchars($data);
return $data;
}
function validateInput(){
global $firsterr, $lasterr, $unameerr, $pwderr, $pwdmatch, $emailerr, $isError;
//check if fname, lname and user name are empty
if(empty(cleanData($_POST['fname']))){
$firsterr="* first name is required";
$isError=true;
}
if(empty(cleanData($_POST['lname']))){
$lasterr=" * last name is required";
$isError=true;
}
if(empty(cleanData($_POST['uname']))){
$unameerr="* user name is required";
$isError=true;
}
// check email format
$pattern = '/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/';
if(preg_match($pattern,cleanData($_POST['email']))==0){
$emailerr="* a valid email-address is required.";
$isError=true;
}
if(strcmp($_POST['pwd'],$_POST['cpwd'])){
$pwdmatch="*** Your password did not match your confirmed password ***";
$isError=true;
}
if(empty($_POST['pwd'])){
$pwderr="* password cannot be empty";
$isError=true;
}
}
function process_form() {
$data_dir = "data";
// the users.txt file stores the users' information
$file = "$data_dir/users.txt";
if ($fh = fopen ($file, 'a+bt')) {
// create directory for user based on time the user registered and a random value.
// This guarantees that the directory is unique and has a valid name.
$dir = time().rand(0, 4596);
// create the data to be written (on Windows add \r\n)
// use the crypt() to encrypt the password.
$data = $_POST['fname']."|".$_POST['lname']."|".$_POST['uname']."|".$_POST['email']."|".$_POST['pwd']."|".crypt($_POST['pwd'],$dir)."|".$dir."\r\n";
// write the data and close the file
fwrite ($fh, $data);
// close the directory in the data directory
mkdir ("$data_dir/$dir");
// print a message
echo "Thank You $_POST[fname] $_POST[lname] for registering. <br>";
// loop through the file by reading 1000 bytes or one line
// whichever comes first with each iteration.
// The data being read is broken into an array using | as delimiter.
rewind($fh);
while ($line = fgetcsv($fh, 1000, "|")) {
// check the file data against the submitted data
if (($line[2] == $_POST['uname']) && ($line[5] == crypt($_POST['pwd'], $line[6]))) {
echo "<p>Here is your information: </p>";
echo $line[0]."|".$line[1]."|".$line[2]."|".$line[3]."|".$line[4];
// stop looking through the file
break;
}
}
fclose ($fh);
}
else {
// couldn't write to the file
echo "<p>You couldn't be registered due to a system error.</p>";
}
$message = "
<html>
<head>
<title>Sending an HTML Message</title>
</head>
<body>
<h2>Thank you for registering</h2>
<h2 align=center>Your user name is {$_POST['uname']}<br><br>Your password is: {$_POST['pwd']}</h2>
</body>
</html> ";
$msgHeader = "From: infoFromRuchi@itu.com\r\n";
$msgHeader .= "MIME-Version: 1.0\n";
$msgHeader .= "Content-type: text/html; charset=us-ascii\n";
// Send email
$test= mail($_POST['email'], 'Registration Confirmation', $message, $msgHeader);
//echo $test;
echo "<p>You will receive an email confirming your registration.</p>";
}
?>
</div>
</body>
</html>
如果成功，它会从文件中读回信息并向用户发送确认电子邮件。
这在我的本地运行（除了电子邮件部分）但是当我ftp到域服务器时，它呈现一个空白页面。它正在显示其他页面，因此我的代码中必须存在一些问题。
答案 0 :(得分：0)
我找到了答案。
空函数只接受变量，不能像：
一样使用空（cleanData（$ _ POST [ 'FNAME']））
使用（strlen（cleanData（$ _ POST ['fname']））== 0）解决了这个问题。