How can PHP developers efficiently debug and troubleshoot issues related to fetching and displaying database results in PHP scripts?

To efficiently debug and troubleshoot issues related to fetching and displaying database results in PHP scripts, developers can use error handling techniques, print out SQL queries for debugging, check for errors in the database connection, and ensure proper data formatting before displaying it on the webpage. 

// Example PHP code snippet for debugging database fetch and display issues

// Establish a database connection
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

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

// Fetch data from the database
$sql = "SELECT * FROM table";
$result = $conn->query($sql);

// Check for query errors
if (!$result) {
    die("Query failed: " . $conn->error);
}

// Display data on the webpage
while ($row = $result->fetch_assoc()) {
    echo "Name: " . $row["name"] . "<br>";
    echo "Email: " . $row["email"] . "<br>";
}

// Close the database connection
$conn->close();

Keywords

PHP debugging troubleshooting database results

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