How can line breaks or whitespace affect the functionality of GD Library functions in PHP code?

Line breaks or whitespace can affect the functionality of GD Library functions in PHP code by causing headers to be sent prematurely. To solve this issue, make sure there is no output (including whitespace) before calling GD Library functions. 

<?php
ob_start(); // Start output buffering
// GD Library functions here
ob_end_clean(); // Clean the output buffer without sending it to the browser
?>

Keywords

GD Library line breaks whitespace functionality PHP code

Related Questions