?php
/**
 * Created by PhpStorm.
 * User: funco
 * Date: 17-6-9
 * Time: 下午1:39
 */
class MulStat
{
  // showClass 可以接受0個參數(shù)
  private function showClass() {
    echo "this is class ".__CLASS__;
  }

  // showString 可以接受一個參數(shù)
  private function showString($str) {
    echo "string is ".$str;
  }

  // __call方法 可以獲取實例化對象調用的成員函數(shù)名和向該被調函數(shù)傳遞的參數(shù)個數(shù)
  public function __call($name, $args) {
    // 先判斷要調用的函數(shù)名$name
    if($name == "showInfo"){
      // 然后可以根據(jù)參數(shù)($args)數(shù)量判斷調用哪個成員函數(shù)
      switch(count($args)) {           // count可以計算數(shù)組元素個數(shù)
        case 0:
          $this->showClass();break;
        case 1:
          $this->showString($args[0]);break;
      }// switch
    }// if
  }
}

//實例化MulStat類
$mulStat = new MulStat();

echo "\$mulStat->showInfo(\"funco 小風\"):\n";
$mulStat->showInfo("funco 小風");

// 兩次換行 便于觀察結果
echo "\n\n";

echo "\$mulStat->showInfo():\n";
$mulStat->showInfo();