gistfile1.txt

<?php
class fmOutput
{
  public function sex($value = '') 
  { 
    return 66; 
  } 
  
  public function op($funcname='', $value = '') 
  { 
    return $this->$funcname; 
  }
  
  public function __call($funcName,$args)
  {
	  return "Oops,{{$funcName}}is unexist";
  }
}

$FM = new fmOutput(); 
echo $FM->op('sex', '男');