// echo $p1->age; echo$p1->salary; ?> 那么現(xiàn)在就想在外部訪問protected和private的元素和方法該怎么辦? 通常做法是通過public函數(shù)去訪問這些變量 格式: public function setxxxx($val){ $this->xxxx=$val; } public function getxxxx(){ return $this->xxxx; ...
1. Echo 顯示當前ECHO的狀態(tài):ECHO ON 或者ECHO OFF 2. ECHO ON 將ECHO狀態(tài)設置為ON,將顯示命令行,也就是前面的C:\>類似的標志,如圖所示: 3. ECHO OFF 將ECHO狀態(tài)設置為OFF,將不顯示命令行,也就是前面的C:\>類似的標志,其他功能一樣,用戶也可以輸入命令,也可以顯示命令結果,如圖所示: ...
echo() (unlike some other language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want to pass more than one parameter to echo(), the parameters must not be enclosed within parentheses. 例子1. echo() examples...