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POHow to dynamically select email address from database?
 

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  1. POHow to dynamically select email address from database?
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    <p>I am using the following PHP code to send email whenever the record is inserted into the table. </p> <pre><code>&lt;?php $latitude = $_GET['latitude']; $longitude = $_GET['longitude']; $uid = $_GET['uid']; $type = $_GET['type']; $server = "itp.db.8307610.hostedresource.com"; $username = "abc"; $password = "xyz"; $database = "abc"; $query = "INSERT INTO gps (latitude, longitude, uid, type) VALUES ($latitude, $longitude, $uid, '$type')"; $query1 = "SELECT email FROM musers WHERE uid = $uid"; $result = mysqli_query($link,$query1) or die("query error".mysqli_error()); $email = mysqli_fetch_array($result, MYSQLI_ASSOC); @mail("$email","New record added","A new record has been added,"From: info@xyz.com"); $link = mysqli_connect($server, $username, $password) or die ("error connecting to database"); mysqli_select_db($database, $link); mysqli_query($query, $link) or die("query error"); mysqli_query($query1, $link) or die("query error"); mysqli_close($link); echo "SUCCESS\n"; ?&gt; </code></pre> <p>This works without a problem. I have hard coded the email id.<br> How can I dynamically add email from musers table based on the following query.</p> <pre><code>select email from musers where uid = $uid; </code></pre> <p><strong>EDIT:</strong> I am getting the following error after making the changes. </p> <blockquote> <p>Warning: mysqli_query() expects parameter 1 to be mysqli, null given in /home/content/i/t/p/itp/html/data/email.php on line 12</p> <p>Warning: mysqli_error() expects exactly 1 parameter, 0 given in /home/content/i/t/p/itp/html/data/email.php on line 12 query error</p> </blockquote>
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    1. CO`mysql_*` functions are being deprecated in php 5.5 (see http://stackoverflow.com/questions/13944956/the-mysql-extension-is-deprecated-and-will-be-removed-in-the-future-use-mysqli for more details) and are considering insecure. Please consider using mysqli or pdo.
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      1. POHow to dynamically select email address from database?
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    2. COIt looks like you're already selecting the `email` value from the `musers` table, you're just not using it. Move your `mail()` call to after you select the value and use the selected value.
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    3. COYou have an SQL injection vulnerability in this code - all the `$_GET` values need escaping.
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