What are the potential pitfalls of using relative file paths for font files in PHP's imagettftext function?

When using relative file paths for font files in PHP's imagettftext function, the potential pitfalls include the risk of the script not being able to locate the font file due to differences in directory structures between development and production environments. To solve this issue, it is recommended to use absolute file paths to ensure the font file can be located regardless of the environment.

// Absolute file path to the font file
$font = '/path/to/font.ttf';

// Example usage of imagettftext function with absolute file path
imagettftext($image, $size, $angle, $x, $y, $color, $font, $text);