i have a form in html. when user hit sumbit. i want to run top php code.
when i run it it give me 2 errors
Notice: Undefined variable: _SESSION in C:\xampp\htdocs\login_test\register.php on line 134
Warning: array_key_exists() expects parameter 2 to be array, null given in C:\xampp\htdocs\login_test\register.php on line 134
<?php
include("connect.php");
//grab submitted data
echo "flag 1";
if(isset($_POST['submit']))
{
echo "workinging";
$reg_error = "";
echo "herere";
//check for empty fields
if(empty($_POST['firstname']) || empty($_POST['lastname']) || empty($_POST['username']) ||
empty($_POST['password']) || empty($_POST['confirm_password']) || empty($_POST['dob_year'])
|| empty($_POST['dob_month']) || empty($_POST['dob_day']) || empty($_POST['gender']))
{
$reg_error .= "Missing field! Please fill in all field!";
}
else
{
//grab submitted data
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$username = $_POST['username'];
$password = $_POST['password'];
$confirm_password = $_POST['confirm_password'];
$dob_year = $_POST['dob_year'];
$dob_month = $_POST['dob_month'];
$dob_day = $_POST['dob_day'];
$gender = $_POST['gender'];
//check len of firstname, lastname, username
if(strlen($firstname) > 20 || strlen($lastname) > 20 && strlen($username) > 20)
{
$reg_error .= "Fistname, lastnmae and username must be no more than 25 characters!";
}
else
{
//check len of passwords
if(strlen($password) > 25 || strlen($password) < 6)
{
$reg_error .= "Password must be between 6 and 25 characters!";
}
else
{
//compare password
if($password != $confirm_password)
{
$reg_error .= "Password do not match!";
}
else
{
//check for dob is number
if(!(is_numeric($dob_year) || is_numeric($dob_month) || is_numeric($dob_day)))
{
$reg_error .= "Date of birth must be in number form. For example, 1989/06/09";
}
else
{
//check value limit of dob
if(strlen($dob_year) > 4 || strlen($dob_month)>2 || strlen($dob_day)>2)
{
$reg_error .= "Date of birth year musb be 4 characters, month and day must be 2 characters.";
}
else
{
//check value of dob
if($dob_month > 12 || $dob_day > 31)
{
$reg_error .= "Date of birth month or day is bigger than expected!";
}
else
{
//check for gender
if($gender != "Male" && $gender != "Female")
{
$reg_error .= "Gender must be Male or Female!";
}
else
{
//check for existing user
$query = mysql_query("Select * FROM user WHERE username = '$username'");
if(mysql_num_rows($query) >= 1)
{
$reg_error .= "That username is already taken";
}
else
{
//success
$dob_db = "$dob_year-$dob_month-$dob_day";
$password_db = $password;
switch($gender)
{
case "Male";
$gender_db = "M";
break;
case"Female";
$gender_db = "F";
break;
}
$register = mysql_query("INSERT INTO register VALUES('','$firstname','$lastname','$username','$password','$dob','$gender')");
//header('Location: index.php');
echo"WORKS";
}
}
}
}
}
}
}
}
}
$_SESSION['reg_error'] = $reg_error; //for errors
header('Location: register.php'); //go back to register page
}
else
{
echo "dead";
}
?>
<html>
<title>Register</title>
<head>
<link rel = "stylesheet" href = "css.css">
</head>
<body>
<!-- go to top php -->
<form action="<?php echo $_SERVER['$PHP_SELF']; ?>" method="post">
<?php
//print errors
if(array_key_exists('reg_error', $_SESSION) && !empty($_SESSION['reg_error']))
{
echo $_SESSION['reg_error'];
unset($_SESSION['reg_error']);
}
?>
Firstname: <input class = "text" type="text" name="firstname"><br>
Lastname: <input class = "text" type="text" name="lastname"><br>
Username: <input class = "text" type="text" name="username"><br>
<!-- HINT -->
<p class="hint">20 characters maximum (letters and numbers only)</p>
Password: <input type="password" name="password"><br>
<!-- HINT -->
<p class="hint">20 characters maximum (letters and numbers only)</p>
Confirm your password: <input type="password" name="confirm_password" size="30"><br>
<!-- HINT -->
<p class="hint">20 characters maximum (letters and numbers only)</p>
Email: <input type="text" name="email"><br/>
DOB:
<input type='text' name='dob_year' maxlength='4' size='3' value='YYYY'> /
<input type='text' name='dob_month' maxlength='2' size='1' value='MM'> /
<input type='text' name='dob_day' maxlength='2' size='1' value='DD'> <br/>
Gender:
<select name="gender">
<option>Female</option>
<option>Male</option>
</select>
<input type="submit" name="submit" value="Register">
</form>
</body>
</html>