HTML Select Option and submit to fetch data from PHP PDO MySql - php

Question

I like to fetch data from MySQL by Select Month and year in HTML Select Option, When i submit view, Table will be filtered. Else all data will be showing. But my code showing error.
Notice: Undefined variable: user in C:\xampp\htdocs\testSelect.php on line 85
Fatal error: Call to a member function getAllUser() on null in C:\xampp\htdocs\testSelect.php on line 85
How can solve this error. Please help me.
here my code:
<?php
class DatabaseConnection{
public function __construct(){
global $pdo;
try{
$pdo=new PDO('mysql:host=localhost;dbname=test','root','');
}catch(PDOException $e){
exit('Database Error');
}
}
}
?>
<?php echo "Select :   " ; ?>
<?php
$monthArray = range(1, 12);
?>
<select name="month">
<option value="">Select Month</option>
<?php
foreach ($monthArray as $month) {
// padding the month with extra zero
$monthPadding = str_pad($month, 2, "0", STR_PAD_LEFT);
// you can use whatever year you want
// you can use 'M' or 'F' as per your month formatting preference
$fdate = date("F", strtotime("2015-$monthPadding-01"));
echo '<option value="'.$monthPadding.'">'.$fdate.'</option>';
}
?>
</select>
  
<?php
// set start and end year range
$yearArray = range(2000, 2050);
?>
<!-- displaying the dropdown list -->
<select name="year">
<option value="s">Select Year</option>
<?php
foreach ($yearArray as $year) {
// if you want to select a particular year
$selected = ($year == 's') ? 'selected' : '';
echo '<option '.$selected.' value="'.$year.'">'.$year.'</option>';
}
?>
</select>
<form method="post">
<input type="submit" name="view" value="View" />
</form>
<?php
function getAllUserReport($username){
global $pdo;
$query=$pdo->prepare("SELECT * FROM user name= $username ");
$query->execute(array($username));
return $query->fetchALL(PDO::FETCH_ASSOC);
}
function filterTable(){
global $pdo;
$query=$pdo->prepare("Select from user where year(date) = $year and month(date) = $month ");
$query->execute();
return $query->fetchALL(PDO::FETCH_ASSOC);
}
?>
<table class="tbl_one">
<tr>
<th>Serial</th>
<th>Name</th>
<th>Age</th>
<th>BirthDate</th>
</tr>
<?php
$i=0;
$alluser = $user->getAllUser($username);
if(isset($_POST['view'])){
$alluser = $user->filterTable();
foreach($alluser as $user){
$i++;
?>
<tr>
<td><?php echo $i; ?></td>
<td><?php echo $user['name']; ?></td>
<td><?php echo $user['age']; ?></td>
<td><?php echo $user['birthdate']; ?></td>
</tr>
<?php } ?>
<?php
}else{
foreach($alluser as $user){
$i++;
?>
<tr>
<td><?php echo $i; ?></td>
<td><?php echo $user['name']; ?></td>
<td><?php echo $user['age']; ?></td>
<td><?php echo $user['birthdate']; ?></td>
</tr>
<?php } } ?>
</table>

Answer 1

Notice: Undefined variable: user in C:\xampp\htdocs\testSelect.php on line 85
Fatal error: Call to a member function getAllUser() on null in C:\xampp\htdocs\testSelect.php on line 85
The error says, that your $user variable is not defined. So you cant call a method on it.