How can headers already sent error be resolved when using header() function in PHP?

The "headers already sent" error in PHP occurs when content is sent to the browser before the header() function is called. To resolve this issue, ensure that no content (including whitespace) is sent before calling the header() function. One common cause is having whitespace before the opening <?php tag or after the closing ?> tag in PHP files. 

&lt;?php
ob_start(); // Start output buffering
// Your PHP code here
header(&quot;Location: https://www.example.com&quot;);
exit();
ob_end_flush(); // Flush the output buffer
?&gt;

Keywords

headers already sent error header() function

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