2018.6.16 PHP小实验

PHP实验

实验一

<?php
/**
 * Created by PhpStorm.
 * User: qichunlin
 * Date: 2018/5/17
 * Time: 下午5:35
 */

echo "请输入要排序的数字：<br/>";
echo "<form method=post>";
//循环生成文本框
for ($i = 1; $i < 6; $i++) {
    //文本框的名字是数组名
    echo "<input type='text' name='stu[]' size='5'>";
    if ($i < 5) {
        echo "-";
    }
}
    echo "<input type='submit' name='bt' value='提交'>";
    echo "</form>";
    if (isset($_POST['bt'])) {
        $temp = 0;
        $stu = $_POST['stu'];
        $num = count($stu);
        echo "您输入的数据有<br/>";
        foreach ($stu as $score) {
            echo $score . "<br>";
        }
        for ($i = 0; $i < $num; $i++)
            for ($j = $i + 1; $j < $num; $j++) {
                if ($stu[$i] > $stu[$j]) {
                    $temp = $stu[$i];
                    $stu[$i] = $stu[$j];
                    $stu[$j] = $temp;
                }

            }
    echo "排序后的数据如下所示：<br/>";
    //使用while循环遍历数组
    while (list($key, $value) = each($stu)) {
        //输出排序后的数组
        echo $value . "<br/>";
    }
}
?>

实验二

<?php
/**
 * Created by PhpStorm.
 * User: qichunlin
 * Date: 2018/5/17
 * Time: 下午6:10
 */

echo "请输入学号:<br/>";
echo "<form method='post'>";
for ($i = 1; $i < 6; $i++) {
    //文本框的名字就是数组名
    echo "<input type='text' name='stu[]' size='6'>";
    if ($i < 5)
        echo "-";
}
echo "<input type='submit' name='bt' value='提交'>";
echo "</form>";
if (isset($_POST['bt'])) {
    //echo "123";
    $k = 0;
    $jsj = array();
    $stu = $_POST['stu'];
    for ($i = 0; $i < count($stu); $i++)
        for ($j = $i + 1; $j < count($stu); $j++) {
            if (strcmp($stu[$i], $stu[$j] == 0))
                array_splice($stu, $j, 1);
        }
    $str = implode(",", $stu);
    echo "所有的学生学号如下:</br>";
    echo $str . "<br>";
    foreach ($stu as $value) {
        if (strstr($value, "0811")) {
            $string = str_replace("08121", "08110", $value);
            $jsj[$k] = $string;
            $k++;

        }
    }
    echo "计算机专业的学号如下:</br>";
    echo implode(",", "$jsj");
}
?>

实验三

学号	姓名	成绩

注意，学号值不能重复

排序后的成绩表如下:"; echo ""; foreach ($sum as $value) { list($stu_number, $stu_name, $stu_score) = $value; echo ""; } echo "

学号	姓名	成绩
$stu_number	$stu_name	$stu_score

"; reset($sum); while (list($key, $value) = each($sum)) { list($stu_number, $stu_name, $stu_score) = $value; if ($stu_number == "3") { echo "

"; echo $stu_number . "的姓名为:" . $stu_name . ","; echo "成绩为:" . $stu_score; break; } } } ?>

###实验五

您的Email地址：

您的留言：

alert('Eamil地址和留言请填写完整！')"; else { //分割Email地址 $array = explode("@", $Email); //如果有两个@符号则报错 if (count($array) != 2) echo ""; else { //取得@前面的内容 $username = $array[0]; //取得@后面的内容 $netname = $array[1]; //如果username中含有"."或","就会报错 if (strstr($username, ".") or strstr($username, ",")) echo ""; else { $str1 = htmlspecialchars("<");//输出符号"<" $str2 = htmlspecialchars(">");//输出符号">" $newnote = str_replace("我", "本人", $note); //xss攻击 转化成HTML实体形式就能解决 $newnote=htmlspecialchars($newnote); echo "

"; echo "用户" . $str1 . $username . $str2 . "您好!  "; echo "您是" . $username . "网友！
"; echo "
您的留言是：
   " . $newnote . "
"; echo "

"; } } } } ?>