How can PHP be used to customize the behavior of file downloads in web applications?

When customizing the behavior of file downloads in web applications using PHP, you can use headers to control the file download process. By setting specific headers in the PHP script, you can force a file to be downloaded instead of displayed in the browser, specify the file name, and control caching behavior. 

<?php
// Set headers to force download and specify file name
header("Content-disposition: attachment; filename=myfile.pdf");
header("Content-type: application/pdf");
// Read the file and output it to the browser
readfile("path/to/myfile.pdf");
exit;
?>

Keywords

PHP file downloads web applications headers content-disposition

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