How can debugging techniques be applied to troubleshoot SQL-related issues in PHP?

To troubleshoot SQL-related issues in PHP, debugging techniques such as error reporting and logging can be utilized. By enabling error reporting, any syntax errors or connection issues can be identified quickly. Additionally, logging SQL queries and their results can help pinpoint where the issue lies in the code. 

// Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Connect to the 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);
}

// Log SQL queries and results
$query = "SELECT * FROM table";
$result = $conn->query($query);

if ($result) {
    while($row = $result->fetch_assoc()) {
        // Process data
    }
} else {
    echo "Error: " . $conn->error;
}

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

Keywords

PHP SQL debugging techniques troubleshooting error types

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