如何通过php记录系统函数（如mkdir）调用

I'm a Linux server administrator (Debian) and my colleagues use php. I like to log any use of some php functions like mkdir or unlink, so I can trace any penetration to our site for example by shell code.

You can override those functions and log whatever you want before to call them.

http://php.net/manual/es/function.override-function.php#50821

<?php
// Rename function to call old function later
rename_function('mkdir', 'old_mkdir'); 

// Override function mkdir
override_function('mkdir', '$pathname, $mode, $recursive, $context', 'return override_mkdir($string);');

// New mkdir function
function override_mkdir($pathname, $mode, $recursive, $context){
    do_something();

    // Call original mkdir function
    return old_mkdir($pathname, $mode, $recursive, $context);  
}
?>