How does using ob_start() and ob_flush() affect PHP script output?

Using ob_start() and ob_flush() in PHP allows you to buffer the output of your script before sending it to the browser. This can be useful in situations where you want to manipulate the output before it is displayed or prevent any output from being sent until you are ready. ob_start() starts output buffering and ob_flush() sends the buffered output to the browser. 

<?php
ob_start();

// Your PHP code here

ob_flush();
?>

Keywords

ob_start ob_flush PHP script output buffering

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