How can the EVA principle (Eingabe, Verarbeitung, Ausgabe) be applied to PHP coding to prevent header-related issues?

When dealing with header-related issues in PHP, it is important to follow the EVA principle (Eingabe, Verarbeitung, Ausgabe) to ensure that headers are not sent before any content is processed. This can be achieved by organizing the code in a way that input is received, processed, and then output is generated. 

<?php
// Eingabe
$input_data = $_POST['data'];

// Verarbeitung
// Process the input data here

// Ausgabe
// Output the processed data after processing
echo $processed_data;
?>

Keywords

EVA principle PHP coding header issues error prevention data processing.

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