html - php checkbox $_post is all on when it comes out-PHP Tutorial-php.cn

html - php checkbox $_post is all on when it comes out

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Release： 2016-08-04 09:21:27

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In the following code, the result of echo $_POST['hobbyS']; is on. Why is this? How can I make it return the correct result?

<code><html>
<?php
$hobby = array('跑步','游泳','篮球','足球');
?>
<body>
    <form method='post'>
        <p>姓名:<input type='text' name="name"></p>
        <p>爱好：
        <?php
            foreach($hobby as $v){
                echo "<input type='checkbox' name='hobbyS'/>".$v;
            }
        ?>
        </p>
        <input type="submit" value='提交'/>
        <input type="reset" value='重置' />
    </form>

    <?php
        if(!empty($_POST)){
                ECHO $_POST['name'];
                echo $_POST['hobbyS'];
        }
    ?>
</body>
</html>

</code>

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In the following code, the result of echo $_POST['hobbyS']; is on. Why is this? How can I make it return the correct result?

<code><html>
<?php
$hobby = array('跑步','游泳','篮球','足球');
?>
<body>
    <form method='post'>
        <p>姓名:<input type='text' name="name"></p>
        <p>爱好：
        <?php
            foreach($hobby as $v){
                echo "<input type='checkbox' name='hobbyS'/>".$v;
            }
        ?>
        </p>
        <input type="submit" value='提交'/>
        <input type="reset" value='重置' />
    </form>

    <?php
        if(!empty($_POST)){
                ECHO $_POST['name'];
                echo $_POST['hobbyS'];
        }
    ?>
</body>
</html>

</code>

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When the checkbox is checked, the default value is on. After setting the value, the checkbox is the value of value

chexkbox plus value=1

http://www.111cn.net/phper/php/37172.htm
Please take a look at the examples in this, there are very detailed explanations!