What are common reasons for PHP code not being executed properly in a web page?

Common reasons for PHP code not being executed properly in a web page include syntax errors, missing PHP tags, incorrect file extensions, and server misconfigurations. To solve this issue, make sure your PHP code is written correctly with proper syntax, enclosed within <?php ?> tags, saved with a .php extension, and your server is configured to run PHP scripts.

&lt;?php
// Correct PHP code snippet
echo &quot;Hello, World!&quot;;
?&gt;