What potential errors can occur when using the header function in PHP for redirection?

When using the header function in PHP for redirection, potential errors can occur if there is any output sent to the browser before the header function is called. This can result in a "headers already sent" error. To solve this issue, make sure that there is no whitespace or HTML output before calling the header function. 

<?php
ob_start(); // Start output buffering
// Any HTML output or whitespace should be placed after this line

header("Location: https://www.example.com");
exit();
ob_end_flush(); // Flush output buffer
?>

Keywords

header function redirection errors PHP potential

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