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  • Courses in the relevant section:PHP流程控制之嵌套if...else...elseif结构

    <form action="run.php" method="post"> <input type="text" name="cj"> <input type="submit" value="查询"> </form> <?php $cj = $_POST['cj']; if(is_numeric($cj)){ if ($cj<60 && $cj>0) { echo "不及格"; }elseif ($cj<70 && $cj>=60) { echo "及格了,要努力"; }elseif ($cj<80 && $cj>=70) { echo "还不错"; }elseif ($cj<90 && $cj>=80) { echo "上清华有希望"; }elseif($cj<100 && $cj>=90){ echo "你这辈子没希望了"; }elseif($cj==100){ echo "更没希望了"; }elseif($cj>100){ echo "爱因斯坦转世啊,思密达!"; } }else{ echo "不是一个数值类型或者小于0 请输入正确的分数。"; } ?>

    2018-10-230个赞

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