What are the common pitfalls when defining values in an INI file for PHP scripts?

Common pitfalls when defining values in an INI file for PHP scripts include not properly escaping special characters, not using the correct INI file format, and not handling errors when reading values from the file. To avoid these pitfalls, make sure to properly escape special characters using the `parse_ini_file()` function to read values from the INI file. Additionally, ensure that the INI file follows the correct format with key-value pairs separated by an equal sign. Lastly, handle errors gracefully when reading values from the file to prevent unexpected behavior.

// Read values from an INI file
$ini_values = parse_ini_file('config.ini');

// Check for errors
if ($ini_values === false) {
    die('Error reading INI file');
}

// Access values from the file
$value1 = $ini_values['key1'];
$value2 = $ini_values['key2'];

// Use the values in your script
echo $value1;
echo $value2;