Examples: Filtering guests with "Where" using mySQLi Object-oriented

id: 2 - Name: Don Doe
id: 4 - Name: John Doe

Here is the code for accessing the database and display the information.

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "DBname";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, firstname, lastname FROM MyGuests WHERE lastname='Doe'";
$result = $conn->query($sql);

    echo "<p><mark>";
if ($result->num_rows > 0) {
  // output data of each row
  while($row = $result->fetch_assoc()) {
    echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "<br>";
  }
} else {
    echo "0 results";
}
    echo "</mark></p>";

$conn->close();
?>

Simular example displayed in a table using "LIKE" and the "%" wildcard

Here is the code for accessing the database and display the information.

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "DBname";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, firstname, lastname, email FROM MyGuests WHERE lastname LIKE 'D%'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  echo "<table><tr><th>ID</th><th>Name</th><th>Email></tr>";
  // output data of each row
  while($row = $result->fetch_assoc()) {
    echo "<tr><td>".$row["id"]."</td><td>".$row["firstname"]." ".$row["lastname"]."</td><td>".$row["email"]."</td></tr>";
  }
  echo "</table>";
} else {
  echo "<p>0 results</p>";
}
$conn->close();
?>