php接口的使用实例函数

interface Ren1
{const XINGMING="张三";
 function shuohua1();
 function shuohua2();}
interface Ren2 extends Ren1
{function shuohua3();
 function shuohua4();}
interface Ren3
{function shuohua5();}
interface Ren4
{function shuohua6();}
class Ren5
{function shuohua7()
 {echo "7777<br>";}}
class Ren extends Ren5 implements Ren2,Ren3,Ren4
{function shuohua1()
{echo "1111<br>";}
 function shuohua2()
{echo "2222<br>";}
 function shuohua3()
{echo "3333<br>";}
 function shuohua4()
{echo "4444<br>";}
 function shuohua5()
{echo "5555<br>";}
 function shuohua6()
{echo "6666<br>";}}
$r=new Ren();
echo Ren::XINGMING."<br>";
$r->shuohua1();
$r->shuohua2();
$r->shuohua3();
$r->shuohua4();
$r->shuohua5();
$r->shuohua6();
$r->shuohua7();
例输出：
张三
1111
2222
3333
4444
5555
6666
7777