In what ways can exploring the source code of PHP functions benefit developers in their understanding and usage of PHP?

Exploring the source code of PHP functions can benefit developers by providing insights into how the functions are implemented, helping them understand the inner workings of PHP and how to use the functions more effectively. It can also help developers identify potential bugs or performance issues in the functions and learn best practices for writing their own code.

// Example code snippet showing how to explore the source code of a PHP function (e.g., strlen)

echo highlight_file('https://www.php.net/manual/en/function.strlen.php');