What steps can be taken to debug PHP code that is not writing to the database as expected?

If PHP code is not writing to the database as expected, the issue may be related to the database connection, query execution, or error handling. To debug this issue, you can start by checking the database connection settings, verifying the SQL query syntax, and implementing error handling to catch any potential errors. 

// Example PHP code snippet to debug database writing issue

// Database connection settings
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

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

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

// SQL query to insert data into a table
$sql = "INSERT INTO table_name (column1, column2) VALUES ('value1', 'value2')";

// Execute the query
if ($conn->query($sql) === TRUE) {
    echo "Record inserted successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

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

Keywords

PHP debugging database SQL error handling

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