我有一个会员注册表格，显示完美，直到我添加PHP。一旦添加了PHP代码，表单就会完全消失。我已经尝试了一切，但我认为在这个阶段需要一双新的眼睛。 任何帮助将不胜感激。欢呼声。
<?php
if ( $_POST['registerbtn'] ) {
$getuser = $_POST['user'];
$getemail = $_POST['email'];
$getpass = $_POST['pass'];
$getretypepass = $_POST['retypepass'];
if ($getuser) {
if ($getemail) {
if($getpass) {
if ($getretypepass) {
if ($getpass === $getretypepass) {
if ( (strlen($getemail) >= 7) && (strstr($getemail, "@")) && (strstr($getemail, "."))) {
require("./connect.php");
$query = mysql_query("SELECT * FROM users WHERE username='$getuser'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$query = mysql_query("SELECT * FROM users WHERE email='$getemail'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$password = md5($password);
$date = date("F d, Y");
$code = md5(rand());
mysql_query("INSERT INTO users VALUES (
'', '$getuser', '$getpassword', '$getemail', '0', '$getcode', '$getdate'
)");
$query = mysql_query("SELECT * FROM users WHERE username='$getusername'");
$numrows = mysql_num_rows($query);
if ($numrows == 1) {
$site ="http://localhost/member.php";
$webmaster = "Bror Phren <bmdoublec@hotmail.com>";
$headers = "From: $webmaster";
$subject = "Activate your account";
$message = "Thanks for registering. Click the link below to activate your account";
$message .= "$site/activate.php?user=$getuser&code=$code\n";
$message .= "You must activate your account t login.";
if (mail($getemail, $subject, $message, $headers) ) {
$errormsg = "You have been registered. You must activate your account from the activation link sent to <b>$getemail</b> ";
$getuser = "";
$getemail = "";
}
else
$errormsg = "An error has occured. Your activation email was not sent";
}
else
$errormsg = "An error has occured. Your account was not created.\n";
}
else
$errormsg = "There is already a user with that email";
}
else
$errormsg = "There is already a user with that username";
mysql_close();
}
else
$errormsg = "You must enter a valid email address to register.";
}
else
$errormsg = "You must retype your password to register.";
}
else
$errormsg = "You must enter password to register.";
}
else
$errormsg = "You must enter email to register.";
}
else
$errormsg = "You must enter username to register.";
}
$form = "<form action='./register.php' method='post'>
<table>
<tr>
<td></td>
<td><font color='red'>$errormsg</font></td>
</tr>
<tr>
<td>Username:</td>
<td><input type='text' name='user' value='$getuser' /></td>
</tr>
<tr>
<td>Email:</td>
<td><input type='text' name='email' value='$getemail' /></td>
</tr>
<tr>
<td>Password:</td>
<td><input type='password' name='pass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='password' name='retypepass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='submit' name='registerbtn' value='Register' /></td>
</tr>
</table>
</form>";
echo $form;
}
?>
答案 0 :(得分：1)
您的echo语句位于if（$ _POST ['registerbtn']）{}块内，这意味着如果未提交表单，则不会显示该表单。
答案 1 :(得分：1)
PHP代码中存在错误，导致无法运行任何内容。
我建议您通过PHPLint之类的代码运行代码来查看错误。
此外，您可能需要考虑以易于阅读和维护的方式构建代码。
例如，您可以避免使用所有嵌套的if语句并将其写为：
if (!$getuser) {
$errormsg = "You must enter username to register.";
}
else if (!$getemail) {
$errormsg = "You must enter email to register.";
}
...
答案 2 :(得分：1)
我认为你需要使用其他
<?php
if (isset($_POST['registerbtn'])) {
$getuser = $_POST['user'];
$getemail = $_POST['email'];
$getpass = $_POST['pass'];
$getretypepass = $_POST['retypepass'];
if ($getuser) {
if ($getemail) {
if($getpass) {
if ($getretypepass) {
if ($getpass === $getretypepass) {
if ( (strlen($getemail) >= 7) && (strstr($getemail, "@")) && (strstr($getemail, "."))) {
require("./connect.php");
$query = mysql_query("SELECT * FROM users WHERE username='$getuser'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$query = mysql_query("SELECT * FROM users WHERE email='$getemail'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$password = md5($password);
$date = date("F d, Y");
$code = md5(rand());
mysql_query("INSERT INTO users VALUES (
'', '$getuser', '$getpassword', '$getemail', '0', '$getcode', '$getdate'
)");
$query = mysql_query("SELECT * FROM users WHERE username='$getusername'");
$numrows = mysql_num_rows($query);
if ($numrows == 1) {
$site ="http://localhost/member.php";
$webmaster = "Bror Phren <bmdoublec@hotmail.com>";
$headers = "From: $webmaster";
$subject = "Activate your account";
$message = "Thanks for registering. Click the link below to activate your account";
$message .= "$site/activate.php?user=$getuser&code=$code\n";
$message .= "You must activate your account t login.";
if (mail($getemail, $subject, $message, $headers) ) {
$errormsg = "You have been registered. You must activate your account from the activation link sent to <b>$getemail</b> ";
$getuser = "";
$getemail = "";
}
else
$errormsg = "An error has occured. Your activation email was not sent";
}
else
$errormsg = "An error has occured. Your account was not created.\n";
}
else
$errormsg = "There is already a user with that email";
}
else
$errormsg = "There is already a user with that username";
mysql_close();
}
else
$errormsg = "You must enter a valid email address to register.";
}
else
$errormsg = "You must retype your password to register.";
}
else
$errormsg = "You must enter password to register.";
}
else
$errormsg = "You must enter email to register.";
}
else
$errormsg = "You must enter username to register.";
}
}
这里
else{
$form = "<form action='./register.php' method='post'>
<table>
<tr>
<td></td>
<td><font color='red'>$errormsg</font></td>
</tr>
<tr>
<td>Username:</td>
<td><input type='text' name='user' value='$getuser' /></td>
</tr>
<tr>
<td>Email:</td>
<td><input type='text' name='email' value='$getemail' /></td>
</tr>
<tr>
<td>Password:</td>
<td><input type='password' name='pass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='password' name='retypepass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='submit' name='registerbtn' value='Register' /></td>
</tr>
</table>
</form>";
echo $form;
}
?>
答案 3 :(得分：0)
编辑：如Armon Toubman所述，只有相关数据已发布到页面时，才会显示表单。您需要在if语句之外移动表单。请参阅以下代码：
<?php
if ( $_POST['registerbtn'] ) {
$getuser = $_POST['user'];
$getemail = $_POST['email'];
$getpass = $_POST['pass'];
$getretypepass = $_POST['retypepass'];
if ($getuser) {
if ($getemail) {
if($getpass) {
if ($getretypepass) {
if ($getpass === $getretypepass) {
if ( (strlen($getemail) >= 7) && (strstr($getemail, "@")) && (strstr($getemail, "."))) {
require("./connect.php");
$query = mysql_query("SELECT * FROM users WHERE username='$getuser'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$query = mysql_query("SELECT * FROM users WHERE email='$getemail'");
$numrows = mysql_num_rows($query);
if ($numrows == 0){
$password = md5($password);
$date = date("F d, Y");
$code = md5(rand());
mysql_query("INSERT INTO users VALUES (
'', '$getuser', '$getpassword', '$getemail', '0', '$getcode', '$getdate'
)");
$query = mysql_query("SELECT * FROM users WHERE username='$getusername'");
$numrows = mysql_num_rows($query);
if ($numrows == 1) {
$site ="http://localhost/member.php";
$webmaster = "Bror Phren <bmdoublec@hotmail.com>";
$headers = "From: $webmaster";
$subject = "Activate your account";
$message = "Thanks for registering. Click the link below to activate your account";
$message .= "$site/activate.php?user=$getuser&code=$code\n";
$message .= "You must activate your account t login.";
if (mail($getemail, $subject, $message, $headers) ) {
$errormsg = "You have been registered. You must activate your account from the activation link sent to <b>$getemail</b> ";
$getuser = "";
$getemail = "";
}
else
$errormsg = "An error has occured. Your activation email was not sent";
}
else
$errormsg = "An error has occured. Your account was not created.\n";
}
else
$errormsg = "There is already a user with that email";
}
else
$errormsg = "There is already a user with that username";
}
else
$errormsg = "You must enter a valid email address to register.";
}
else
$errormsg = "You must retype your password to register.";
}
else
$errormsg = "You must enter password to register.";
}
else
$errormsg = "You must enter email to register.";
}
else
$errormsg = "You must enter username to register.";
}
mysql_close();
}
?>
<form action='./register.php' method='post'>
<table>
<tr>
<td></td>
<td><font color='red'><?php if(isset($errormsg){ echo $errormsg; } ?></font></td>
</tr>
<tr>
<td>Username:</td>
<td><input type='text' name='user' value='<?php if(isset($getuser){ echo $getuser; } ?>' /></td>
</tr>
<tr>
<td>Email:</td>
<td><input type='text' name='email' value='<?php if(isset($getemail){ echo $getemail; } ?>' /></td>
</tr>
<tr>
<td>Password:</td>
<td><input type='password' name='pass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='password' name='retypepass' value='' /></td>
</tr>
<tr>
<td>Retype:</td>
<td><input type='submit' name='registerbtn' value='Register' /></td>
</tr>
</table>
</form>