What steps can be taken to troubleshoot and debug issues with reading CSV files into a database using PHP?

Issue: Troubleshooting and debugging issues with reading CSV files into a database using PHP can involve checking the file path, ensuring proper file permissions, and verifying the database connection.

<?php
// Check the file path and permissions
$csv_file = 'data.csv';
if (!file_exists($csv_file) || !is_readable($csv_file)) {
    die("Error: CSV file not found or not readable.");
}

// Verify the database connection
$host = 'localhost';
$username = 'username';
$password = 'password';
$database = 'database_name';

$conn = new mysqli($host, $username, $password, $database);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Code to read CSV file and insert data into the database
// Add your code here

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