How can the issue of "Cannot modify header information" be resolved in PHP when sending emails?

The issue of "Cannot modify header information" in PHP when sending emails can be resolved by ensuring that no output is sent to the browser before calling functions like header() or setcookie(). To fix this issue, you can use output buffering to capture any output before sending headers. 

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

// Your email sending code here

ob_end_flush(); // Flush the output buffer

Keywords

PHP headers ob_start ob_end_flush email sending

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