How can header declarations in PHP files affect the display of images when included in HTML files?

When PHP files containing header declarations are included in HTML files, it can affect the display of images by causing headers to be sent before the image data, resulting in a broken image display. To solve this issue, you can use output buffering in PHP to prevent headers from being sent prematurely. 

<?php
ob_start(); // Start output buffering
?>
<!DOCTYPE html>
<html>
<head>
    <title>Display Images</title>
</head>
<body>
    <img src="image.jpg" alt="Image">
</body>
</html>
<?php
ob_end_flush(); // Flush output buffer
?>

Keywords

PHP header declarations images HTML files display

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