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POIs it possible to use $_REQUEST for inserting data in a mysql database?
 

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  1. POIs it possible to use $_REQUEST for inserting data in a mysql database?
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    <p>I already have this code figured out, but the entries a user submits with the submit button aren't going anywhere. Is there any way to fix this, or should I just use the $_POST method? </p> <p>PHP code:</p> <pre><code> &lt;?php include ("dbroutine.php"); function register() { $connect = db_connect; if (!$connect) { die(mysql_error()); } $select_db = mysql_select_db(securitzed, $connect); if (!$select_db) { die(mysql_error()); } //Collecting info $fname = $_REQUEST ['fname']; $lname = $_REQUEST ['lname']; $username = $_REQUEST['username']; $password = $_REQUEST['password']; $email = $_REQUEST['email']; //Here we will check do we have all inputs filled if(empty($_REQUEST['username'])){ die("Please enter your username!&lt;br&gt;"); } if(empty($_REQUEST['password'])){ die("Please enter your password!&lt;br&gt;"); } if(empty($_REQUEST['email'])){ die("Please enter your email!"); } //Let's check if this username is already in use $user_check = mysql_query("SELECT username FROM members WHERE username = '".$_REQUEST ['username']."'"); $do_user_check = mysql_num_rows($user_check); //Now if email is already in use $email_check = mysql_query("SELECT email FROM members WHERE email= '".$_REQUEST['email']."'"); $do_email_check = mysql_num_rows($email_check); //Now display errors if($do_user_check &gt; 0){ die("Username is already in use!&lt;br&gt;"); } if($do_email_check &gt; 0){ die("Email is already in use!"); } //If everything is okay let's register this user $insert = mysql_query("INSERT INTO members (username, password, email) VALUES ('".$_REQUEST['username']."', '".$_REQUEST['password']."', '".$_REQUEST['email']."', '".$_REQUEST['fname']."', '".$_REQUEST['lname']."')"); if(!$insert){ die("There's little problem: ".mysql_error()); } } switch($act){ case "register"; register(); break; } </code></pre> <p>HTML code:</p> <pre><code> &lt;body&gt; &lt;form method="post"&gt; First Name: &lt;input type="text" name="fname" value="" /&gt; &lt;br /&gt; Last Name: &lt;input type="text" name="lname" value="" /&gt; &lt;br /&gt; E-mail: &lt;input type="email" name="email" value="" /&gt; &lt;br /&gt; Desired Username: &lt;input type="text" name="username" value="" /&gt; &lt;br /&gt; Password: &lt;input type="password" name="password" value="" /&gt; &lt;br /&gt; Confirm Password: &lt;input type="password" name="passwordconf" value="" /&gt; &lt;br /&gt; &lt;input type="submit" value="Submit"/&gt; &lt;/form&gt; &lt;/body&gt; </code></pre> <p>If I need to add anything, could anyone point it out, if not, I could also add some extra code if needed.</p>
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    1. COYou are using [an **obsolete** database API](http://stackoverflow.com/q/12859942/19068) and should use a [modern replacement](http://php.net/manual/en/mysqlinfo.api.choosing.php). You are also **vulnerable to [SQL injection attacks](http://bobby-tables.com/)** that a modern API would make it easier to [defend](http://stackoverflow.com/questions/60174/best-way-to-prevent-sql-injection-in-php) yourself from.
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    2. COYou shouldn't actually use `$_REQUEST` if you already know it's going to be posted; so you should use `$_POST`.
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    3. COIf usernames are unique, make them unique in your database table structure; this will eliminate much of the code.
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