How can error logs be utilized to troubleshoot header-related issues in PHP?

When troubleshooting header-related issues in PHP, error logs can be utilized to identify any warnings or errors related to headers already being sent or headers not being able to be modified. By checking the error logs, you can pinpoint the exact location in your code where the issue is occurring and make the necessary adjustments to ensure headers are being set correctly. 

<?php
// Check for headers already sent
if (headers_sent()) {
    error_log("Headers already sent in file: " . __FILE__ . " on line " . __LINE__);
}

// Set headers if not already sent
if (!headers_sent()) {
    header('Content-Type: text/html');
}
?>

Keywords

error logs troubleshooting headers PHP issues

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