Are there any best practices for handling header information errors in PHP when working with image generation functions?

When working with image generation functions in PHP, it's important to handle header information errors properly to ensure that the image is displayed correctly in the browser. One common issue is the "header already sent" error, which occurs when there is whitespace or output before the header function is called. To solve this, you can use output buffering to capture any output before sending headers. 

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

// Generate image here

ob_end_clean(); // Clean the output buffer without sending it
header('Content-Type: image/png'); // Set the header for PNG image
// Output the image

Keywords

PHP header information image generation error handling functions

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