how to populate dropdown list values from mysql
Question
I'm trying to add a user into my users table, the form asks for user name and asks the user to select a manager from a dropdown list. I'd like to populate the existing managers from the manager_id column in the managers table. However I have no idea how to do that. this is my code so far:
<?php
if (isset($_POST['add'])) {
require_once 'login.php';
$OK = false;
$conn = new mysqli ($host, $user, $password, $database) or die("Connection Failed");
$stmt = $conn->stmt_init();
$sql = 'INSERT INTO users (user_name, user_manager, user_creation_date)
VALUES(?, ?, NOW())';
if ($stmt->prepare($sql)) {
$stmt->bind_param('ss', $_POST['user_name'], $_POST['user_manager']);
$stmt->execute();
if ($stmt->affected_rows > 0) {
$OK = true;
}
}
if ($OK) {
header('Location: add_user_confirm.php');
exit;
} else {
$error = $stmt->error;
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<title>Add new user</title>
</head>
<body>
<h1>Add new user</h1>
<?php if (isset($error)) {
echo "<p>Error: $error</p>";
} ?>
<form id="form1" method="post" action="">
<p>
<label for="user_name">user name:</label>
<input name="user_name" type="text" class="widebox" id="user_name">
</p>
<p>
User manager: <select name="user_manager" size "1">
</p>
<p>
<input type="submit" name="add" value="add_user" id="add">
</p>
</form>
</body>
</html>
My 'managers' table looks like this: manager_id | manager_name | manager_dept
Could someone please help? THANKS in advance
2 answers
solution1
2 ACCPTED 2013-02-10 21:52:02
Something like this should work
<p>
User manager: <select name="user_manager" size "1">
<?php $stmt->close();
$stmt2 = $conn->stmt_init();
$selectQ = 'select * from managers';
$stmt2->prepare($selectQ);
$stmt2->execute();
$result = $stmt2->get_result();
while($resultRow = $result->fetch_array(MYSQLI_ASSOC))
echo '<option value="$resultRow[manager_id]">$resultRow[manager_name]</option>';
$result->close();
$stmt2->close();
?>
</p>
solution2
0 2013-02-10 22:17:07
Below is an example of adding a user.
/**
* Storing new user
* returns user details
*/
public function storeUser($name, $email, $password) {
$uuid = uniqid('', true);
$hash = $this->hashSSHA($password);
$encrypted_password = $hash["encrypted"]; // encrypted password
$salt = $hash["salt"]; // salt
$result = mysql_query("INSERT INTO users(unique_id, name, email, encrypted_password, salt, created_at) VALUES('$uuid', '$name', '$email', '$encrypted_password', '$salt', NOW())");
// check for successful store
if ($result) {
// get user details
$uid = mysql_insert_id(); // last inserted id
$result = mysql_query("SELECT * FROM users WHERE uid = $uid");
// return user details
return mysql_fetch_array($result);
} else {
return false;
}
}
Remember you don't want to store the password in its orginal form hence the $salt and hashSSHA function. those are listed below.
/**
* Encrypting password
* @param password
* returns salt and encrypted password
*/
public function hashSSHA($password) {
$salt = sha1(rand());
$salt = substr($salt, 0, 10);
$encrypted = base64_encode(sha1($password . $salt, true) . $salt);
$hash = array("salt" => $salt, "encrypted" => $encrypted);
return $hash;
}
/**
* Decrypting password
* @param salt, password
* returns hash string
*/
public function checkhashSSHA($salt, $password) {
$hash = base64_encode(sha1($password . $salt, true) . $salt);
return $hash;
}
These functions will help to keep things secure. also if you want to learn more about this or see the entire API and all its code please visit here
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