How can the PHP source code on GitHub be leveraged to gain insights into the underlying C code execution for specific PHP functions?

To gain insights into the underlying C code execution for specific PHP functions, one can analyze the PHP source code on GitHub. By examining the implementation details of PHP functions in the source code, developers can understand how these functions are executed at a lower level in C code. This can provide valuable insights into the inner workings of PHP functions and help in optimizing code performance or troubleshooting issues.

// Example PHP code snippet to analyze the underlying C code execution for the "strlen" function
$source_code = file_get_contents('https://github.com/php/php-src/blob/master/ext/standard/string.c');
// Use the source code to gain insights into the C code execution for the "strlen" function
// Analyze the implementation details to understand how the function works internally