Question

所以我要做的就是把这个调查问卷放在我主页的下半部分，这样人们可以点击与他们所在学校相对应的复选框。一旦他们检查了，我希望他们提交，当它提交时，将它们带回同一页面，但是“回声”你会去....“

出于某种原因，当我在文档中有此代码时，页面甚至不会加载。但是，如果我关闭该部分，页面加载，复选框就在那里，但它没有按照我的意愿行事。我将列出下面的整个页面代码，希望是一个简单的解决方案。我只想在他们选择之后，回应他们的选择。

提前致谢！

<? php 
$school = $_POST["school"]; 
$school_count = count( $school ); 
print( “You attend $school : “ ); 
foreach($school as $school) { 
 print("$school, "); 
}

?>

代码

    <!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="../styles/main.css">
    <meta charset="utf-8">
    <title>My Personal Website</title>
</head>

<body>
    <!--Header used in all pages -->
    <?php include 'header.php' ?>
        <div class="body">
        <h2><u>My Personal  Website...About ME!</u></h2>
            <!-- Picture, nicely aligned -->
                <img id="picture" src="../images/richard.jpg" alt="richard">
<!--Summary of what my website is about -->
        <p id="summary">Here is a little about myself....</p>
        <p>My name is Terrence Horan, I love in Montour Falls, NY, not to far from Ithaca, NY. I attend Cornell University and am majoring in Information Science, and hopefully will get a minor in Computer Science. I love anything that involves technology,however if you would like to read more, dont be shy! Come in a browse my website!</p>
       </div>

<!--Questionaire near the bottom of the page -->
        <div id="schoolform">
<form action=“myaction.php” method=“post”> 
What school are you enrolled in at Cornell?
 <input type="checkbox" name="school[]" value= "CE" />College of Engineering 
 <input type="checkbox" name="school[]" value= "CAS" /> College of Arts and Sciences 
 <input type="checkbox" name="school[]" value= "CAAP" />College of Architecture, Arts, and Planning.
 <input type="checkbox" name="school[]" value= “CALS" />College of Agriculture and Life Sciences 
 <input type="checkbox" name="school[]" value= "ILR" />School of Industrial and Labor Relations (ILR) 
 <input type="checkbox" name="school[]" value= "CHE" />College of Human Ecology 
 <input type="checkbox" name="school[]" value= "Hotel" />School of Hotel Administration
</form>
</div>


<?php var_dump($_POST);?>
<!--Footer.php used in all my pages -->
       <?php include 'footer.php' ?>
    </div>

</body>

</html>

Answer 1

2件事;

在你的foreach中，你将覆盖原来的$ school变量。所以你总是只限于一所学校（最多）。
您应该在显示结果之前检查表单是否已提交（否则您基本上会收到错误。

我宁愿这样写：

<?php
if(isset($_POST['school']) && is_array($_POST['school']) && count($_POST['school']) > 0) {
   echo 'You attend the following schools: ', implode(', ', $_POST['school']);
} else {
   echo 'no schools selected yet.';
}
?>

Answer 2

你的php有一些问题：

1）<? php需要<?php。

2）您似乎在使用特殊字符在此处声明字符串：

print( “You attend $school : “ );

相反，它应该是：

print( "You attend $school : " );

3）您不能使用与foreach数组相同的变量，因为重复foreach循环时将提供无效参数。

Answer 3

对您的代码进行一些小改进可能会对您有所帮助。

// initialize variables
$school = false;
$school_count = false;

// check if you are getting something from $_POST
if ( isset( $_POST["school"] ) !== false ) {
    $school = $_POST["school"];
}

// work only if there is something to do
if ( $school !== false ) {
    $school_count = count( $school );
    print( "You attend ".$school." : " );
    foreach( $school as $values ) { // don't use the same variable name
        print( $values.", ");
    }
}

显然，你仍然应该在每一步都有适当的数据。

Answer 4

你的foreach循环中有错误将其更改为foreach(school as somothervariable){echo 'anything';}目前你正在使用相同的变量学校。

PHP和数组，试图回应答案

4 个答案: