linux遍历进程号、inode、进程名称

<?php    $handle= opendir("/proc/");    while(false !== ($dir=readdir($handle))){        if( is_dir("/proc/".$dir) && preg_match("/[0-9]/",$dir) ){            $h1 = opendir("/proc/".$dir."/fd/");            while(false !== ($f=readdir($h1))){                if($f!=="." && $f!==".."){                    echo "PID:".$dir."====Inode:".fileinode("/proc/".$dir."/fd/".$f)."===PName:".file_get_contents("/proc/".$dir."/cmdline",true)."\n";                }            }        }    }    closedir($handle);?>