php里面的traits技术下部(系列篇)

as可以修改traits里面方法的可见性

 public function aa(){ echo "
		

			tA:aa...
		
"; } public function bb(){ echo "
		

			tA:bb...
		
"; } public function ok(){ echo "
		

			tA:ok...
		
"; } } trait tB { public function cc(){ echo "
		

			tB:cc...
		
"; } public function dd(){ echo "
		

			tB:dd...
		
"; } public function ok(){ echo "
		

			tB:ok...
		
"; } } //抽象类 abstract class Humanity { public $name; public $sex; public $iq=10; const BIRTHPLACE='地球'; static public $counter=0;//静态属性，它是公共的资源和具体的实例没有关系 //构造函数 public function __construct($name,$sex){ self::$counter++; $this->name=$name; $this->sex=$sex; } protected function chew($food){ echo "
		

			{$food}已经被咀嚼完成！
		
"; } //抽象方法 abstract public function eat($food); static public function hello(){ echo '
		

			您好！我是来自'.self::BIRTHPLACE.'的人类
		
'; } } class Student extends Humanity { const BIRTHPLACE='火星'; public $studentId; public function test($subject){ echo "
		

			{$this->name}正在考{$subject}！
		
"; } public function eat($food){ $this->chew($food); echo "
		

			{$this->name}正在快速的吃{$food}！
		
"; } use tA,tB { tA::OK insteadof tB; tB::ok as okTb; aa as private; bb as private bbPrivate; } } abstract class Dog { } class Huskies extends Dog { use tA,tB { tB::ok insteadof tA; } } $hanMM=new Student('韩梅梅','女'); $hanMM->bbPrivate(); 

解析： tA语法糖里面的ok方法替换掉tB里面的ok方法。 tB语法糖里面的ok方法改名为okTb。 aa方法把修饰符替换成私有性private。 把bb方法改名为bbPrivate，并把修饰符改成private.

在trait里面使用其他trait

 public function aa(){ echo "
		

			tA:aa...
		
"; } public function bb(){ echo "
		

			tA:bb...
		
"; } public function ok(){ echo "
		

			tA:ok...
		
"; } } trait tB { public function cc(){ echo "
		

			tB:cc...
		
"; } public function dd(){ echo "
		

			tB:dd...
		
"; } public function ok(){ echo "
		

			tB:ok...
		
"; } } trait tC { use tA,tB { tA::ok insteadof tB; } } //抽象类 abstract class Humanity { public $name; public $sex; public $iq=10; const BIRTHPLACE='地球'; static public $counter=0;//静态属性，它是公共的资源和具体的实例没有关系 //构造函数 public function __construct($name,$sex){ self::$counter++; $this->name=$name; $this->sex=$sex; } protected function chew($food){ echo "
		

			{$food}已经被咀嚼完成！
		
"; } //抽象方法 abstract public function eat($food); static public function hello(){ echo '
		

			您好！我是来自'.self::BIRTHPLACE.'的人类
		
'; } } class Student extends Humanity { const BIRTHPLACE='火星'; public $studentId; public function test($subject){ echo "
		

			{$this->name}正在考{$subject}！
		
"; } public function eat($food){ $this->chew($food); echo "
		

			{$this->name}正在快速的吃{$food}！
		
"; } use tC; } abstract class Dog { } class Huskies extends Dog { use tC; } $hanMM=new Student('韩梅梅','女'); $hanMM->cc(); 

解析： tC里面有两个语法糖(有六个方法)，先替换掉冲突的ok不然会报错，然后输出即可（算是tC有六个方法）.

语法糖里面有抽象方法怎么做？(实现)

 public function aa(){ echo "
		

			tA:aa...
		
"; } public function bb(){ echo "
		

			tA:bb...
		
"; } abstract public function ok(); } //抽象类 abstract class Humanity { public $name; public $sex; public $iq=10; const BIRTHPLACE='地球'; static public $counter=0;//静态属性，它是公共的资源和具体的实例没有关系 //构造函数 public function __construct($name,$sex){ self::$counter++; $this->name=$name; $this->sex=$sex; } protected function chew($food){ echo "
		

			{$food}已经被咀嚼完成！
		
"; } //抽象方法 abstract public function eat($food); static public function hello(){ echo '
		

			您好！我是来自'.self::BIRTHPLACE.'的人类
		
'; } } class Student extends Humanity { const BIRTHPLACE='火星'; public $studentId; public function test($subject){ echo "
		

			{$this->name}正在考{$subject}！
		
"; } public function eat($food){ $this->chew($food); echo "
		

			{$this->name}正在快速的吃{$food}！
		
"; } use tA; public function ok(){ } } abstract class Dog { } class Huskies extends Dog { use tA; public function ok(){ } } $hanMM=new Student('韩梅梅','女'); $hanMM->aa(); 

解析： 重写ok方法，不然会报错。