How to Efficiently Fetch a Single Result from a MySQL Database using mysqli?

Fetching Single Result from Database using mysqli

Obtaining a single record from a database using mysqli is distinct from looping through multiple results.

Fetching Row Data as an Associative Array

To retrieve an entire row as an associative array, utilize:

$row = $result->fetch_assoc();

Fetching Single Value

For obtaining a single value, use:

// PHP >= 8.1
$value = $result->fetch_column();

// Older PHP versions
$value = $result->fetch_row()[0] ?? false;

Examples for Specific Use Cases

Variables in Query (PHP >= 8.2)

$query = "SELECT fullname, email FROM users WHERE>

No Variables in Query

$user = $conn->query("SELECT * FROM users LIMIT 1")->fetch_assoc();

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