How can context switching be properly handled in PHP when outputting data?

When handling context switching in PHP when outputting data, it is important to buffer the output using output buffering functions like ob_start() and ob_get_clean(). This allows you to capture the output and manipulate it before sending it to the browser, ensuring that headers are not sent prematurely. By using output buffering, you can avoid issues with headers being sent multiple times and ensure a smooth transition between different contexts. 

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

// Output data
echo "Hello, World!";

// Get the buffered output
$output = ob_get_clean();

// Manipulate the output if needed
$output = strtoupper($output);

// Send the modified output to the browser
echo $output;

Keywords

context switching PHP outputting data buffering ob_start

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