How can PHP be optimized to efficiently handle the execution of batch files for remote PC operations?

When executing batch files for remote PC operations in PHP, it is important to optimize the code for efficiency. One way to do this is by using the `exec()` function in PHP to run the batch files asynchronously, allowing the script to continue executing without waiting for the batch file to finish. This can help improve the overall performance of the script when handling multiple remote PC operations.

// Example code snippet for executing batch files asynchronously in PHP
$batchFile = 'path/to/batchfile.bat';
$cmd = "start /B cmd /c $batchFile"; // Run batch file in background

exec($cmd);