What are some best practices to follow when implementing a login system in PHP to avoid header-related errors?

When implementing a login system in PHP, it is important to avoid header-related errors by ensuring that no output is sent before calling the `header()` function. To achieve this, you can use output buffering to capture any output before sending headers. 

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

// Your PHP login code here

ob_end_flush(); // Send output buffer

Keywords

PHP login system header errors session management security

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