PHP and MySQL are two technologies that have been used together for many years to create dynamic and data-driven websites. PHP is a server-side scripting language, while MySQL is a relational database management system.
Use the `mysqli` extension, which is an improved version of the older `mysql` extension:
<?php
$server = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";
// Create connection
$conn = new mysqli($server, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
$sql = "CREATE TABLE users (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50)
)";
if ($conn->query($sql) === TRUE) {
echo "Table users created successfully";
} else {
echo "Error creating table: " . $conn->error;
}
$conn->close();
$sql = "INSERT INTO users (firstname, lastname, email)
VALUES ('John', 'Doe', 'john@example.com')";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
$sql = "SELECT id, firstname, lastname FROM users";
$result = $conn->query($sql);
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";
}
$conn->close();
$sql = "UPDATE users SET email='john.doe@example.com' WHERE id=1";
if ($conn->query($sql) === TRUE) {
echo "Record updated successfully";
} else {
echo "Error updating record: " . $conn->error;
}
$conn->close();
$sql = "DELETE FROM users WHERE id=1";
if ($conn->query($sql) === TRUE) {
echo "Record deleted successfully";
} else {
echo "Error deleting record: " . $conn->error;
}
$conn->close();
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