How can errors or issues with code examples from external sources, such as the one provided by shop.stefan-reimers.de, be effectively troubleshooted in PHP?

The issue with the code example from shop.stefan-reimers.de is that the PHP opening tag is missing, causing a syntax error. To solve this issue, simply add the PHP opening tag "<?php" at the beginning of the code snippet. 

&lt;?php
// Code snippet from shop.stefan-reimers.de
$variable = &quot;Hello, World!&quot;;
echo $variable;
?&gt;

Keywords

external sources troubleshoot PHP error handling debugging

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