How can PHP developers ensure proper error handling and debugging techniques when working with databases?

When working with databases in PHP, developers can ensure proper error handling and debugging techniques by using try-catch blocks to catch exceptions and display meaningful error messages. Additionally, developers can use functions like mysqli_error() to retrieve detailed error information from the database server. 

<?php
// Connect to the database
$mysqli = new mysqli("localhost", "username", "password", "database");

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

// Perform a database query
$query = "SELECT * FROM users";
$result = $mysqli->query($query);

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

// Process the query results
while ($row = $result->fetch_assoc()) {
    // Process each row
}

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

Keywords

PHP error handling debugging databases exception handling

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