How can the issue of "headers already sent" error be avoided when working with PHP image generation?

Issue: The "headers already sent" error occurs when PHP tries to send headers (like content-type) after it has already started sending output to the browser. To avoid this error when working with PHP image generation, make sure to not output anything before sending headers or use output buffering to capture the output before sending headers.

&lt;?php
ob_start(); // Start output buffering

// Generate image here

header(&#039;Content-Type: image/png&#039;); // Send header before any output
imagepng($image); // Output the image

ob_end_flush(); // Flush the output buffer
imagedestroy($image); // Clean up
?&gt;

How can the issue of "headers already sent" error be avoided when working with PHP image generation?

Related Questions