Are there any additional functions that need to be used along with header(), imagecreatefromjpeg(), imagecreate(), and imagejpeg() to output an image in PHP?

When using the functions header(), imagecreatefromjpeg(), imagecreate(), and imagejpeg() to output an image in PHP, it is important to set the correct content type in the header to inform the browser that the response is an image. This can be done by using the header() function with the "Content-Type: image/jpeg" parameter.

<?php
// Load the JPEG file
$jpegFile = 'image.jpg';
$image = imagecreatefromjpeg($jpegFile);

// Output the image
header('Content-Type: image/jpeg');
imagejpeg($image);

// Free up memory
imagedestroy($image);
?>