pre and post processes' function in php -

if have bunch of functions :

function 1 () { ... } function 2 () { ... } ... function ten () { ... } 

is there way execute pre , post function each ten functions above without modify them?

for instance,

function 1 () { print '1'; } function pre () { print 'start'; } function post () { print 'finish'; }  set_pre_function (one, pre); set_post_function (one, post);  one(); 

result :

start 1 finish 

what approach?
need add functions class, , make them private or protected, call them directly.

class prepostclass {     private $prefunc;     private $postfunc;      public function set_pre_function($func) {         $this->prefunc = $func;     }      public function set_post_function($func) {         $this->postfunc = $func;     }      public function __call($name, $arguments) {         if (!is_null($this->prefunc)) {             $this->prefunc();         }          $return = call_user_func_array(__class__ . '->' . $name, $arguments);          if (!is_null($this->postfunc)) {             $this->postfunc();         }          return $return;     } }