What is the best way to query a specific field from a database using PHP?

When querying a specific field from a database using PHP, you can use a SELECT statement with the desired field name in the query. This will retrieve only the data from that specific field, making your query more efficient and focused. 

<?php
// Connect to database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Query specific field from database
$sql = "SELECT specific_field FROM table_name";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "Specific Field: " . $row["specific_field"] . "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

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