How does the order of execution of code affect the proper functioning of header redirects in PHP?

The order of execution of code is crucial for proper functioning of header redirects in PHP. This is because header redirects must be sent before any other output is sent to the browser. If output is sent before the header redirect, it will result in a "headers already sent" error. To solve this issue, make sure to place the header redirect code at the very top of your PHP script, before any other code or HTML. 

<?php
// Place this code at the very top of your PHP script
header("Location: new_page.php");
exit;
?>

Keywords

header redirects order of execution PHP code functioning error types

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