What are common methods for retrieving data from a MySQL database using PHP?

To retrieve data from a MySQL database using PHP, you can use the MySQLi or PDO extension. Both extensions provide methods for connecting to a MySQL database, executing queries, and fetching results. You can use SELECT queries to retrieve data from specific tables in the database and then process the results in your PHP code. 

// Using MySQLi extension to retrieve data from a MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

$sql = "SELECT * FROM table_name";
$result = $mysqli->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "Column1: " . $row["column1"]. " - Column2: " . $row["column2"]. "<br>";
    }
} else {
    echo "0 results";
}

$mysqli->close();

Keywords

MySQL PHP database retrieval SQL queries data fetching

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