note 114191 added to function.stat

On GNU/Linux you can retrieve the number of currently running processes on the machine by doing a stat for hard links on the '/proc' directory like so: $ stat -c '%h' /proc 118 You can do the same thing in php by doing a stat on /proc and grabbing the [3] 'nlink' - number of links in the returned array. Here is the function I'm using, it does a clearstatcache() when called more than once. <?php /** * Returns the number of running processes * * @link http://php.net/clearstatcache * @link http://php.net/stat Description of stat syntax. * @author http://www.askapache.com/php/get-number-running-proccesses.html * @return int */ function get_process_count() { static $ver, $runs = 0; // check if php version supports clearstatcache params, but only check once if ( is_null( $ver ) ) $ver = version_compare( PHP_VERSION, '5.3.0', '>=' ); // Only call clearstatcache() if function called more than once */ if ( $runs++ > 0 ) { // checks if $runs > 0, then increments $runs by one. // if php version is >= 5.3.0 if ( $ver ) { clearstatcache( true, '/proc' ); } else { // if php version is < 5.3.0 clearstatcache(); } } $stat = stat( '/proc' ); // if stat succeeds and nlink value is present return it, otherwise return 0 return ( ( false !== $stat && isset( $stat[3] ) ) ? $stat[3] : 0 ); } ?> Example #1 get_process_count() example <?php $num_procs = get_process_count(); var_dump( $num_procs ); ?> The above example will output: int(118) Which is the number of processes that were running. ---- Server IP: 72.52.91.14 Probable Submitter: 72.52.91.14 ---- Manual Page -- http://php.net/manual/en/function.stat.php Edit -- https://master.php.net/note/edit/114191 Del: integrated -- https://master.php.net/note/delete/114191/integrated Del: useless -- https://master.php.net/note/delete/114191/useless Del: bad code -- https://master.php.net/note/delete/114191/bad+code Del: spam -- https://master.php.net/note/delete/114191/spam Del: non-english -- https://master.php.net/note/delete/114191/non-english Del: in docs -- https://master.php.net/note/delete/114191/in+docs Del: other reasons-- https://master.php.net/note/delete/114191 Reject -- https://master.php.net/note/reject/114191 Search -- https://master.php.net/manage/user-notes.php