How important is it to send correct HTTP headers in PHP to avoid issues with header("Location:...") redirections?

It is crucial to send correct HTTP headers in PHP to avoid issues with header("Location:...") redirections. Incorrect headers can lead to unexpected behavior or errors, such as headers already sent warnings. To avoid these issues, always make sure to send headers before any output is sent to the browser. 

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

// Send correct headers before any output
header("Location: https://www.example.com");
exit();

Keywords

HTTP headers PHP header function Location redirection error handling

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