In what order should PHP processing and output to the browser be organized to avoid potential pitfalls in script execution?

To avoid potential pitfalls in script execution, it is important to organize PHP processing and output to the browser in the correct order. PHP processing should be done first before any output is sent to the browser. This ensures that any headers or cookies are set before any content is displayed. Failure to follow this order may result in errors such as "headers already sent" or unexpected behavior in the script. 

<?php
// Start PHP processing
ob_start(); // Start output buffering

// Set headers or cookies
header('Content-Type: text/html');

// Process data
$data = "Hello, World!";

// Output to the browser
echo $data;

// End PHP processing
ob_end_flush(); // Flush output buffer
?>

Keywords

PHP processing output buffering error handling script execution headers manipulation

Related Questions