In what scenarios would it be necessary to output content before performing a PHP redirection?

In scenarios where you need to output content before performing a PHP redirection, you can use output buffering to capture the content before sending any headers. This is useful when you want to display a message or perform some actions before redirecting the user to another page. 

<?php
ob_start(); // Start output buffering

// Output content here
echo "Processing your request...";

ob_end_flush(); // Flush the output buffer

// Perform redirection after outputting content
header("Location: newpage.php");
exit;
?>

Keywords

output buffering header function HTTP headers ob_start redirect

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