Courses in the relevant section：PHP integer type is an integer

8进制和16进制的算法

2018-10-220个赞

Courses in the relevant section：PHP data type string

双引号是解析变量，单引号不解析变量

2018-10-220个赞

Courses in the relevant section：Nested if...else...elseif structure of PHP process control

<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

Courses in the relevant section：PHP flow control for loop control statement

<?php echo '<table border="1" width="200">'; for($i=0;$i<100;$i++){ if($i%10==0){ if($i%20==0){ echo '<tr>'; }else{ echo '<tr bgcolor="pink">'; } } echo '<td>'.$i.'</td>'; } if($i%10==0){ echo '</tr>'; } echo'</table>'; ?>

2018-10-230个赞