PHP MySql 000webhost retrieve data from database - php

Question

I am new to using database with php, using 000webhost I don't know what to write to get data from specific table
connection.php
<?php
$servername = "localhost";
$username = "*****************";
$password = "***********";
$database = "*****************";
try {
$conn = new PDO("mysql:host=$servername;dbname=$database", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
} catch(PDOException $e) {
echo "Connection failed: " . $e->getMessage();
}
?>
getalldata.php
<?php
include 'connection.php';
//get data from Database
?>

Answer 1

Let suppose you are fetching records from studentrecord
require_once 'connection.php';
$roll = $_POST['roll'];
$query = "SELECT * from studentrecord where roll = '$roll'";
try{
$statement = $conn->query($query);
echo "<table border='1'>
<tr>
<td>Roll</td>
<td>Stream</td>
<td>Session</td>
<td>Name</td>
<td>Mother Name</td>
<td>Father Name</td>
<td>Total Mark's</td>
<td>Grade</td>
<td>Result</td>
</tr>";
//if you want to fetch records as an array indexed
while ($result = $statement->fetch()){
echo "<tr>";
echo "<td>" . $result['id'] . "</td>";
echo "<td>" . $result['stream'] . "</td>";
echo "<td>" . $result['session'] . "</td>";
echo "<td>" . $result['name'] . "</td>";
echo "<td>" . $result['mother_name'] . "</td>";
echo "<td>" . $result['father_name'] . "</td>";
echo "<td>" . $result['total_marks'] . "</td>";
echo "<td>" . $result['grade'] . "</td>";
echo "<td>" . $result['result'] . "</td>";
echo "</tr>";
}
//if you want to fetch records as an anonymous object
while ($result = $statement->fetchObject()){
echo "<tr>";
echo "<td>" . $result->id . "</td>";
echo "<td>" . $result->stream . "</td>";
echo "<td>" . $result->session . "</td>";
echo "<td>" . $result->name . "</td>";
echo "<td>" . $result->mother_name . "</td>";
echo "<td>" . $result->father_name . "</td>";
echo "<td>" . $result->total_marks . "</td>";
echo "<td>" . $result->grade . "</td>";
echo "<td>" . $result->result . "</td>";
echo "</tr>";
}
echo "</table>";
}
catch (PDOException $ex) {
echo "Failed to retrieve record".$ex->getMessage();
`enter code here`}