How can PHP developers troubleshoot common issues like "output started in" errors when working with CSS styles in PHP files?

When encountering "output started in" errors while working with CSS styles in PHP files, it usually means that there is whitespace or HTML content being output before the CSS styles are applied. To solve this issue, PHP developers can ensure that there is no output sent to the browser before the CSS styles are included in the PHP file. 

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

// Your PHP code here

ob_end_flush(); // Flush output buffer
?>

Keywords

PHP CSS output started in error troubleshooting

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