使用PHP和页面安全向MySQL添加记录 - Adding records to MySQL using PHP and page security

这是一个创建PHP页面向表中添加数据的尝试。我在第79行得到一个解析错误，所以我已经摆弄了一段时间:

Parse error: syntax error, unexpected T_STRING in /home/sharah19/dev.rahmaninet.org/new.php on line 79

我也有另一个问题:什么是最简单的方法，使这个页面安全?所以只有通过登录页面进行身份验证的用户才能添加记录?

new.php:

<?php
/* 
NEW.PHP
Allows user to create a new entry in the database
*/
  // creates the new record form
 // since this form is used multiple times in this file, I have made it a function that     is easily reusable
function renderForm($first, $last,$email, $error)
{
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"    "http://www.w3.org/TR/html4/strict.dtd">
 <html>
 <head>
 <title>Add a New Record</title>
 <link href="rahmani.css" rel="stylesheet">
 </head>
 <body>
 <div id="main">
<h1>RahmaniNET CRM System</h1>
<?php include("header.php"); ?>
<?php 
// if there are any errors, display them
if ($error != '')
{
echo '<div style="padding:4px; border:1px solid red; color:red;">'.$error.'</div>';
}
?> 
<form action="" method="post">
<div>
<strong>First Name: *</strong> <input type="text" name="first_name" value="<?php echo   $first_name; ?>" /><br/>
<strong>Last Name: *</strong> <input type="text" name="last_name" value="<?php echo   $last_name; ?>" /><br/>
<strong>email: *</strong> <input type="text" name="email" value="<?php echo $email; ?>"   /><br/>
<p>* required</p>
 <input type="submit" name="submit" value="Submit">

 </div>
</div>
</form> 
</body>
</html>
<?php 
}


// connect to the database
include('connect-db.php');

// check if the form has been submitted. If it has, start to process the form and save      it to the database
if (isset($_POST['submit']))
{ 
// get form data, making sure it is valid
$first_name = mysql_real_escape_string(htmlspecialchars($_POST['first_name']));
$last_name = mysql_real_escape_string(htmlspecialchars($_POST['last_name']));
$email = mysql_real_escape_string(htmlspecialchars($_POST['email']));
// check to make sure both fields are entered
if ($first_name == '' || $last_name == ''|| $email == '')
{
// generate error message
$error = 'ERROR: Please fill in all required fields!';
// if either field is blank, display the form again
renderForm($first_name, $last_name, $email, $error);
}
else
{
// save the data to the database
mysql_query("INSERT contacts SET first_name='$first_name', last_name='$last_name',email   ='$email' )
or die(mysql_error()); 
// once saved, redirect back to the view page
header("Location: view.php"); 
}
}
else
// if the form hasn't been submitted, display the form
{
renderForm('$first', '$last','$email', $error);
}
?>

这个错误来自于MySQL查询缺少一个结束引号:

mysql_query("INSERT contacts SET first_name='$first_name', last_name='$last_name',email   ='$email') or die(mysql_error());

应该是:

mysql_query("INSERT contacts SET first_name='$first_name', last_name='$last_name',email   ='$email'") or die(mysql_error());

你还问:

我还有另一个问题:制作这个页面最简单的方法是什么安全吗?因此，只有通过登录页面进行身份验证的用户才能使用添加记录?

如果你正在使用Apache，那么你应该使用Apache AuthType Basic。更多细节请看这里。

您的sql字符串中缺少双引号:

mysql_query("INSERT contacts SET first_name='$first_name', last_name='$last_name',email   ='$email' )