How can the use of images in HTML code affect the setting of headers in PHP?

When using images in HTML code, it can affect the setting of headers in PHP if the images are output before setting headers. This can lead to errors like "Headers already sent" because headers must be set before any output is sent to the browser. To solve this issue, make sure to set headers before any output, including images, in the PHP code. 

<?php
// Set headers before any output
header("Content-Type: text/html");

// Output the HTML code with images
echo "<html><body>";
echo "<img src='image.jpg' alt='Image'>";
echo "</body></html>";
?>

Keywords

HTML images headers PHP code

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