请，我是php的新手，我正在尝试编写注册表单，用户也可以上传他们的个人资料图片。表单的其他部分工作正常，只是上传方面让我很头疼。我搜索了很多论坛，但没有人给我答案。
当我的笔记本电脑连接时，我会发布我之前的代码，因为服务器在这里很慢。
我会感谢任何帮助，我只想将图像名称存储在数据库中，我不需要图像的任何其他属性。并且图像应该上传到特定的文件夹/目录。并且图像名称也应该更改，因此它是我想要存储在数据库中的新名称。
提前致谢。
以下是我的脚本：
<?php
//We check if the user is logged
if(isset($_SESSION['username']))
{
//We check if the form has been sent
if(isset($_POST['username'], $_POST['password'], $_POST['passverif'], $_POST['email'], $_POST['avatar']))
{
//We remove slashes depending on the configuration
if(get_magic_quotes_gpc())
{
$_POST['username'] = stripslashes($_POST['username']);
$_POST['password'] = stripslashes($_POST['password']);
$_POST['passverif'] = stripslashes($_POST['passverif']);
$_POST['email'] = stripslashes($_POST['email']);
$_POST['avatar'] = stripslashes($_POST['avatar']);
}
//We check if the two passwords are identical
if($_POST['password']==$_POST['passverif'])
{
//We check if the password has 6 or more characters
if(strlen($_POST['password'])>=6)
{
//We check if the email form is valid
if(preg_match('#^(([a-z0-9!\#$%&\\\'*+/=?^_`{|}~-]+\.?)*[a-z0-9!\#$%&\\\'*+/=?^_`{|}~-]+)@(([a-z0-9-_]+\.?)*[a-z0-9-_]+)\.[a-z]{2,}$#i',$_POST['email']))
{
//We protect the variables
$username = mysql_real_escape_string($_POST['username']);
$password = mysql_real_escape_string($_POST['password']);
$email = mysql_real_escape_string($_POST['email']);
$avatar = mysql_real_escape_string($_POST['avatar']);
//We check if there is no other user using the same username
$dn = mysql_fetch_array(mysql_query('select count(*) as nb from users where username="'.$username.'"'));
//We check if the username changed and if it is available
if($dn['nb']==0 or $_POST['username']==$_SESSION['username'])
{
//We edit the user informations
if(mysql_query('update users set username="'.$username.'", password="'.$password.'", email="'.$email.'", avatar="'.$avatar.'" where id="'.mysql_real_escape_string($_SESSION['userid']).'"'))
{
//We dont display the form
$form = false;
//We delete the old sessions so the user need to log again
unset($_SESSION['username'], $_SESSION['userid']);
?>
<div class="message">Your were successfully Updated. You need to log again.<br />
<a href="connexion.php">Log in</a></div>
<?php
}
else
{
//Otherwise, we say that an error occured
$form = true;
$message = 'An error occurred while updating your informations.';
}
}
else
{
//Otherwise, we say the username is not available
$form = true;
$message = 'The username you want to use is not available, please choose another one.';
}
}
else
{
//Otherwise, we say the email is not valid
$form = true;
$message = 'The email you entered is not valid.';
}
}
else
{
//Otherwise, we say the password is too short
$form = true;
$message = 'Your password must contain at least 6 characters.';
}
}
else
{
//Otherwise, we say the passwords are not identical
$form = true;
$message = 'The passwords you entered are not identical.';
}
}
else
{
$form = true;
}
if($form)
{
//We display a message if necessary
if(isset($message))
{
echo '<strong>'.$message.'</strong>';
}
//If the form has already been sent, we display the same values
if(isset($_POST['username'],$_POST['password'],$_POST['email']))
{
$pseudo = htmlentities($_POST['username'], ENT_QUOTES, 'UTF-8');
if($_POST['password']==$_POST['passverif'])
{
$password = htmlentities($_POST['password'], ENT_QUOTES, 'UTF-8');
}
else
{
$password = '';
}
$email = htmlentities($_POST['email'], ENT_QUOTES, 'UTF-8');
if(isset($avatar))
{
$avatar = htmlentities($_POST['avatar'], ENT_QUOTES, 'UTF-8');
}
}
else
{
//otherwise, we display the values of the database
$dnn = mysql_fetch_array(mysql_query('select username,password,email,avatar from users where username="'.$_SESSION['username'].'"'));
$username = htmlentities($dnn['username'], ENT_QUOTES, 'UTF-8');
$password = htmlentities($dnn['password'], ENT_QUOTES, 'UTF-8');
$email = htmlentities($dnn['email'], ENT_QUOTES, 'UTF-8');
$avatar = htmlentities($dnn['avatar'], ENT_QUOTES, 'UTF-8');
}
//We display the form
?>
<div class="content">
<?php include('adverts.php'); ?>
<br />
<form action="edit_infos.php" method="post" class="message">
<i><b>Edit your personal Info</b></i><br />
<div class="center">
<label for="username">Username</label><input type="text" name="username" id="username" value="<?php echo $username; ?>" /><br />
<label for="password">Password<span class="small">(6 characters min.)</span></label><input type="password" name="password" id="password" value="<?php echo $password; ?>" /><br />
<label for="passverif">Password<span class="small">(verification)</span></label><input type="password" name="passverif" id="passverif" value="<?php echo $password; ?>" /><br />
<label for="email">Email</label><input type="text" name="email" id="email" value="<?php echo $email; ?>" /><br />
<label for="avatar">Avatar<span class="small">(optional)</span></label>
<input name="avatar" type="file" id="avatar" size="50" value="<?php echo $avatar; ?>" />
<br />
<input type="submit" value="Send" />
</div>
</form>
</div>
<?php
}
}
else
{
?>
<div class="message">You must be a registered member to access this Page.<br />
<a href="connexion.php">Log in</a></div>
<?php
}
?>
我想将重命名的图片名称上传到db中的“avatar”，并上传到“avatar / users”文件夹
提前致谢