What is the best way for a beginner to verify PHP CGI functions?

One way for a beginner to verify PHP CGI functions is to use the phpinfo() function, which displays information about PHP configuration, including enabled CGI functions. By running phpinfo() in a script and viewing the output in a browser, beginners can easily see which CGI functions are available for use. 

<?php
phpinfo();
?>

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PHP CGI functions verification beginner

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