How can output buffering with ob_start() be used to prevent header modification issues in PHP scripts?

When output buffering is enabled using ob_start(), it allows PHP scripts to buffer (store) output before sending it to the browser. This can prevent header modification issues because headers must be sent before any actual output. By using ob_start() at the beginning of the script, you can ensure that headers are not modified inadvertently by any output generated during script execution. 

<?php
ob_start();

// Start your PHP script here

// Any output generated here will be buffered

// At the end of the script, send the buffered output to the browser
ob_end_flush();
?>

Keywords

output buffering ob_start() header modification PHP scripts error prevention

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