What are the potential pitfalls of not defining constants properly in PHP code?

Not defining constants properly in PHP code can lead to inconsistencies and errors in the codebase. It can make the code harder to maintain and debug, as the values of the constants may change throughout the code. To solve this issue, constants should be defined using the `define()` function and given meaningful names to represent their purpose in the code. 

// Define constants properly
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', 'password');
define('DB_NAME', 'database_name');

Keywords

constants PHP define errors debugging

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