本文实例为大家分享了php实现简单四则运算器的具体代码,供大家参考,具体内容如下
前端代码 :
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<!DOCTYPE html> < html > < head > < meta charset = "UTF-8" > < title >php计算器</ title > </ head > < body > < form name = "form" method = "post" action = "phpjisuan.php" > 请输入num1:< input type = "text" name = "num1" ></ br ></ br > 请选择运算符:< select name = "sel" > < option value = "+" >+</ option > < option value = "-" >-</ option > < option value = "*" >*</ option > < option value = "/" >/</ option > < option value = "%" >%</ option > </ select ></ br ></ br > 请输入num2:< input type = "text" name = "num2" ></ br ></ br > < input type = "submit" name = "Submit" value = "计算" > < input type = "reset" name = "Reset" value = "重置" > </ form > </ body > </ html > |
后台:
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<!DOCTYPE html> < html > < head > < meta charset = "UTF-8" > < title >php计算器</ title > <? php $num1=$_POST["num1"]; $num2=$_POST["num2"]; $sel=$_POST["sel"]; ?> </ head > < body > <? php if($sel=="+"){ $num=$num1+$num2; } else if($sel=="-"){ $num=$num1-$num2; } else if($sel=="*"){ $num=$num1*$num2; } else if($sel=="/"){ if($num2!=0){ $num=$num1/$num2; }else{ echo "除数不能为0"; } } else if($sel=="%"){ if($num2!=0){ $num=$num1%$num2; }else{ echo "除数不能为0"; } } if(isset($num)){ echo "运算结果为$num"; } ?> </ body > </ html > |
效果图1:
效果图2:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/qq_43144014/article/details/82811486