Please help me with the error code that displays the data on the php & sqlsrv page

Quote:

<?php

//fetch.php

include 'MyConnect.php';

$output = '';

$query = '';

if(isset($_POST["query"]))
{
$search = str_replace(",", "|", $_POST["query"]);
$query = "
SELECT * FROM Student
WHERE Student_Id REGEXP '".$search."'
OR Student_Name REGEXP '".$search."'

";
}
else
{
$query = "
SELECT *FROM StudentORDER BY Student_Id
";
}

$statement = $conn->prepare($query);
$statement->execute();

while($row = $statement->fetch(PDO::FETCH_ASSOC))
{
$data[] = $row;
}

echo json_encode($data);

?>

Quote:

Fatal error: Uncaught Error: Call to a member function prepare() on resource in C:\xampp\htdocs\testsql\test2.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\testsql\test2.php on line 28

Quote:

$statement = $conn->prepare($query);
$statement->execute();

while($row = $statement->fetch(PDO::FETCH_ASSOC))
{
$data[] = $row;
}

echo json_encode($data);