PHP学习笔记2-流程控制

条件控制：if

1 <?php 2 function getLevel($score){ 3 if($score>=90){ 4 return "优秀"; 5 }elseif($score>=80){ 6 return "良好"; 7 }elseif($score>=70){ 8 return "中等"; 9 }elseif($score>=60){ 10 return "及格"; 11 }else{ 12 return "差"; 13 } 14 } 15 echo getLevel(90);

多分支控制：switch

1 <?php 2 function getLevel($score){ 3 switch(intval($score/10)){ //intval()把变量转换成整数类型 4 case 10: 5 case 9: 6 return "优秀"; 7 case 8: 8 return "良好"; 9 case 7: 10 return "中等"; 11 case 6: 12 return "及格"; 13 default: 14 return "差"; 15 } 16 } 17 echo getLevel(90);

Break（终止语句执行）

1 <?php 2 function getLevel($score){ 3 $result = "差"; 4 switch($score/10) { 5 case 10: 6 case 9: 7 $result = "优秀"; 8 break; 9 case 8: 10 $result = "良好"; 11 break; 12 case 7: 13 $result = "中等"; 14 break; 15 case 6: 16 $result = "及格"; 17 break; 18 default: 19 return "差"; 20 } 21 return $result; 22 } 23 echo getLevel(90);

 

转载于:https://www.cnblogs.com/Vito-L/p/4603992.html

相关资源：JAVA上百实例源码以及开源项目