What are the potential issues with sending headers in PHP scripts, as seen in the forum thread?

The potential issue with sending headers in PHP scripts is that headers must be sent before any output is generated. If there is any output (such as HTML content or whitespace) before the header function is called, it will result in a "headers already sent" error. To solve this issue, make sure to call the header function before any output is sent to the browser. 

<?php
// Correct way to set a header before any output
header("Content-Type: text/html");

// Output content after setting header
echo "Hello, World!";
?>

Keywords

headers PHP scripts potential issues forum thread error types

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