What potential issues can arise if the header type is omitted in the imagejpeg() function?

If the header type is omitted in the imagejpeg() function, the image might not be displayed correctly in the browser or might not be recognized as a valid image file. To solve this issue, you need to specify the header type as 'Content-Type: image/jpeg' before outputting the image. 

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

// Specify the header type
header('Content-Type: image/jpeg');

// Output the image
imagejpeg($image);

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

Keywords

imagejpeg header type PHP function errors

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