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Change Email Address

The change-email-address.php script lets administrators change the administrator's email address. Changing administrator password and changing users password are done in other scripts.

In editing the email address in the host's members table, the configure.php is included to establish server and database connections. Next, we get the username and email variables POSTed to our PHP script, with the username being POSTed from the page that sent us here and the other variable getting POSTed from this members table editing page to itself. Note that if the Administrator is not logged in and therefore his username (stored in $U) is unset, he is sent to the login page. If the $A variable is not set, he has not yet entered data into the form.

Once the $A variable is set, the PHP script updates the specified email address in the host's members table where all administrators' data is stored. Note that "UPDATE members SET email = '$A' WHERE username = '$U'" is the table query used, and it only works if the administrator's username is located in the members table. Note that in MySQL queries, single quotes are used around data variables, but when there are variables that represent table names (which does not occur in this particular script but does occur in scripts that perform such tasks as editing group members or editing status code meanings), no quotes should be used. If the table gets updated successfully, you get a message to that effect. Success is detected by a special MySQL function, mysql_affected_rows(). Once the edit is done, there's a button to let the administrator return to the Administrators Page. Note that JSON is used to pass the user name from PHP to JavaScript and then it gets POSTed back to PHP by the form in this script as well as to the Administrator page. This keeps the user logged in so he need not login constantly as he uses various editing scripts.

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1252">
<TITLE>Change Email Address</TITLE>
<meta name="description" content="Change Email Address">
<meta name="keywords" content="Change Email Address,php,javascript, dhtml, DHTML">
<style type="text/css">
BODY {margin-left:0; margin-right:0; margin-top:0;text-align:left}
p, li {font:13px Verdana; color:black;text-align:left}
h1 {font:bold 28px Verdana; color:black;text-align:center}
h2 {font:bold 24px Verdana;text-align:center}
h3 {font:bold 15px Verdana;}




if (!isset($U)) {
echo '<script language="javascript">alert("Please login.");
window.location="login.php"; </script>';

if (isset($A)) {
mysql_query("UPDATE members SET email = '$A' WHERE username = '$U'");
$rc = mysql_affected_rows();
if ($rc>0){unset($A);
echo '<script language="javascript">alert("The change was successfully accomplished.");</script>';}
else{echo '<script language="javascript">alert("The change was unsuccessful.");</script>';}


<h1>Change Email Address</h1>

<div id='pw' style='position:absolute;top:150px;left:200px;width:300px'><table style="background-color:#8aa;border-color:#00f" border='6' cellspacing=0 cellpadding=6><tr><td>
<form id='formpw' name="formpw" method="post" action="change-email-address.php" onsubmit="return validatepassword()">
<label for="Email Address"><b>Email Address:    </b><input type="text" name="email" size="20" maxlength="20" value=""></label><br><br>
<input type="hidden" name="username" value=" ">
<input type="submit" value="Change Email Address"><br><br>
<input type="reset" value="Reset"></form></td></tr></table>


<form name="MyForm" method="POST" action="administrator-page.php">
<input type="button" value="Return to Administrator Page" onclick="goback()">
<input type="hidden" name="username" value=" ">

<script language="javascript">

function goback(){
var u = <?php echo json_encode($U); ?>;

function validatepassword(){

var u = <?php echo json_encode($U); ?>;

var ck_email = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/;
if (document.formpw.email.value.search(ck_email)==-1)
{alert("That email address is not valid.");return false}

return true;}