What are the potential pitfalls of using a custom MySQL connection class in PHP scripts?

One potential pitfall of using a custom MySQL connection class in PHP scripts is that it may not handle errors or exceptions properly, leading to potential security vulnerabilities or data loss. To mitigate this risk, it is important to ensure that the custom connection class includes proper error handling and exception catching mechanisms. 

// Example of a custom MySQL connection class with error handling and exception catching

class CustomMySQLConnection {
    private $connection;

    public function __construct($host, $username, $password, $database) {
        $this->connection = new mysqli($host, $username, $password, $database);

        if ($this->connection->connect_error) {
            throw new Exception("Connection failed: " . $this->connection->connect_error);
        }
    }

    public function query($sql) {
        $result = $this->connection->query($sql);

        if (!$result) {
            throw new Exception("Query failed: " . $this->connection->error);
        }

        return $result;
    }

    public function close() {
        $this->connection->close();
    }
}

// Example of using the custom MySQL connection class
try {
    $db = new CustomMySQLConnection("localhost", "username", "password", "database");
    $result = $db->query("SELECT * FROM table");
    
    // Process the query result
    
    $db->close();
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}

Keywords

MySQL connection class PHP scripts potential pitfalls custom.

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