How can C++ extensions be integrated into PHP code?

To integrate C++ extensions into PHP code, you can use the PHP Extension and Application Repository (PEAR) to create a PHP extension that interfaces with your C++ code. This allows you to extend the functionality of PHP by writing C++ code that can be called from PHP scripts.

<?php
// Load the C++ extension
extension_loaded('your_cpp_extension');

// Call a C++ function from PHP
$result = your_cpp_function($arg1, $arg2);

// Display the result
echo $result;
?>