php面向對象關鍵字
阿新 • • 發佈:2019-04-15
sum func code host 繼承 this sta fin nal
- const 修飾類屬性
1 class Person 2 { 3 const HOST = ‘localhost‘; 4 5 public function say(){ 6 echo ‘hello‘; 7 } 8 } 9 10 echo Person::HOST;
- final 最終版本,不允許被繼承:修飾類或方法
1 final class Person 2 { 3 const HOST = ‘localhost‘; 4 5 public function say(){
1 class Person 2 { 3 const HOST = ‘localhost‘; 4 5 final public function say(){ 6 echo ‘hello‘; 7 } 8 }
- static 修飾屬性或方法
1 class Person 2 { 3 public $name; 4 static public $num; 5 6 public function
1 # 類名可以直接調用不包含$this的方法,否則必須通過new類名調用 2 3 class Person 4 { 5 public $name; 6 7
php面向對象關鍵字