在 onClick HTML 事件之后调用 PHP 函数 - Call a PHP function after onClick HTML event

目的：调用 PHP 函数从文件中读取数据并重写它。我只为此目的使用 PHP - FileIO - 我是 PHP 的新手。

溶液？我尝试了许多论坛，知道我们无法以正常方式实现它：onClick 事件>调用函数。我们怎么能做到，还有其他方法吗，特别是在我的情况下？我的HTML代码和PHP代码在同一页面上：Admin.php。这是 HTML 部分：

<form>
    <fieldset>
        <legend>Add New Contact</legend>
        <input type="text" name="fullname" placeholder="First name and last name" required /> <br />
        <input type="email" name="email" placeholder="etc@company.com" required /> <br />
        <input type="text" name="phone" placeholder="Personal phone number: mobile, home phone etc." required /> <br />
        <input type="submit" name="submit" class="button" value="Add Contact" onClick="" />
        <input type="button" name="cancel" class="button" value="Reset" />
    </fieldset>
</form>

这是PHP部分：

function saveContact()
{
    $datafile = fopen ("data/data.json", "a+");
    if(!$datafile){
        echo "<script>alert('Data not existed!')</script>";
    } 
    else{
        ...
        $contact_list = $contact_list . addNewContact();
        ...
        file_put_contents("data/data.json", $contact_list);
    }
    fclose($datafile);
}
function addNewContact()
{
   $new = '{';
   $new = $new . '"fullname":"' . $_GET['fullname'] . '",';
   $new = $new . '"email":"' . $_GET['email'] . '",';
   $new = $new . '"phone":"' . $_GET['phone'] . '",';
   $new = $new . '}';
   return $new;
}

看看这些代码，我想在人们点击添加联系人按钮时调用saveContact。如果需要，我们可以重新加载页面。仅供参考，我也在页面中使用JQuery，HTML5。谢谢

有两种方法。第一种是使用典型的表单提交完全刷新页面

//your_page.php
<?php 
$saveSuccess = null;
$saveMessage = null;
if($_SERVER['REQUEST_METHOD'] == 'POST') {
  // if form has been posted process data
  // you dont need the addContact function you jsut need to put it in a new array
  // and it doesnt make sense in this context so jsut do it here
  // then used json_decode and json_decode to read/save your json in
  // saveContact()
  $data = array(
    'fullname' = $_POST['fullname'],
    'email' => $_POST['email'],
    'phone' => $_POST['phone']
  );
  // always return true if you save the contact data ok or false if it fails
  if(($saveSuccess = saveContact($data)) {
     $saveMessage = 'Your submission has been saved!';     
  } else {
     $saveMessage = 'There was a problem saving your submission.';
  } 
}
?>
<!-- your other html -->
<?php if($saveSuccess !== null): ?>
   <p class="flash_message"><?php echo $saveMessage ?></p>
<?php endif; ?>
<form action="your_page.php" method="post">
    <fieldset>
        <legend>Add New Contact</legend>
        <input type="text" name="fullname" placeholder="First name and last name" required /> <br />
        <input type="email" name="email" placeholder="etc@company.com" required /> <br />
        <input type="text" name="phone" placeholder="Personal phone number: mobile, home phone etc." required /> <br />
        <input type="submit" name="submit" class="button" value="Add Contact" onClick="" />
        <input type="button" name="cancel" class="button" value="Reset" />
    </fieldset>
</form>
<!-- the rest of your HTML -->

第二种方法是使用 AJAX。为此，您需要将表单处理完全分离到一个单独的文件中：

过程.php

$response = array();
if($_SERVER['REQUEST_METHOD'] == 'POST') {
  // if form has been posted process data
  // you dont need the addContact function you jsut need to put it in a new array
  // and it doesnt make sense in this context so jsut do it here
  // then used json_decode and json_decode to read/save your json in
  // saveContact()
  $data = array(
    'fullname' => $_POST['fullname'],
    'email' => $_POST['email'],
    'phone' => $_POST['phone']
  );
  // always return true if you save the contact data ok or false if it fails
  $response['status'] = saveContact($data) ? 'success' : 'error';
  $response['message'] = $response['status']
      ? 'Your submission has been saved!'
      : 'There was a problem saving your submission.';
  header('Content-type: application/json');
  echo json_encode($response);
  exit;
}
?>

然后在你的html/js

<form id="add_contact" action="process.php" method="post">
        <fieldset>
            <legend>Add New Contact</legend>
            <input type="text" name="fullname" placeholder="First name and last name" required /> <br />
            <input type="email" name="email" placeholder="etc@company.com" required /> <br />
            <input type="text" name="phone" placeholder="Personal phone number: mobile, home phone etc." required /> <br />
            <input id="add_contact_submit" type="submit" name="submit" class="button" value="Add Contact" onClick="" />
            <input type="button" name="cancel" class="button" value="Reset" />
        </fieldset>
    </form>
    <script type="text/javascript">
     $(function(){
         $('#add_contact_submit').click(function(e){
            e.preventDefault();  
            $form = $(this).closest('form');
            // if you need to then wrap this ajax call in conditional logic
            $.ajax({
              url: $form.attr('action'),
              type: $form.attr('method'),
              dataType: 'json',
              success: function(responseJson) {
                 $form.before("<p>"+responseJson.message+"</p>");
              },
              error: function() {
                 $form.before("<p>There was an error processing your request.</p>");
              }
            });
         });         
     });
    </script>

<div id="sample"></div>   
 <form>
        <fieldset>
            <legend>Add New Contact</legend>
            <input type="text" name="fullname" placeholder="First name and last name" required /> <br />
            <input type="email" name="email" placeholder="etc@company.com" required /> <br />
            <input type="text" name="phone" placeholder="Personal phone number: mobile, home phone etc." required /> <br />
            <input type="submit" name="submit" id= "submitButton" class="button" value="Add Contact" onClick="" />
            <input type="button" name="cancel" class="button" value="Reset" />
        </fieldset>
    </form>
<script>
    $(document).ready(function(){
         $("#submitButton").click(function(){
            $("#sample").load(filenameofyourfunction?the the variable you need);
         });
    });
</script>

你不需要javascript来这样做。只需删除onClick并像这样编写php Admin.php文件：

<!-- HTML STARTS-->
<?php
//If all the required fields are filled
if (!empty($GET_['fullname'])&&!empty($GET_['email'])&&!empty($GET_['name']))
{
function addNewContact()
    {
    $new = '{';
    $new .= '"fullname":"' . $_GET['fullname'] . '",';
    $new .= '"email":"' . $_GET['email'] . '",';
    $new .= '"phone":"' . $_GET['phone'] . '",';
    $new .= '}';
    return $new;
    }
function saveContact()
    {
    $datafile = fopen ("data/data.json", "a+");
    if(!$datafile){
        echo "<script>alert('Data not existed!')</script>";
        } 
    else{
        $contact_list = $contact_list . addNewContact();
        file_put_contents("data/data.json", $contact_list);
        }
    fclose($datafile);
    }
// Call the function saveContact()
saveContact();
echo "Thank you for joining us";
}
else //If the form is not submited or not all the required fields are filled
{ ?>
<form>
    <fieldset>
        <legend>Add New Contact</legend>
        <input type="text" name="fullname" placeholder="First name and last name" required /> <br />
        <input type="email" name="email" placeholder="etc@company.com" required /> <br />
        <input type="text" name="phone" placeholder="Personal phone number: mobile, home phone etc." required /> <br />
        <input type="submit" name="submit" class="button" value="Add Contact"/>
        <input type="button" name="cancel" class="button" value="Reset" />
    </fieldset>
</form>
<?php }
?>
<!-- HTML ENDS -->

以为我不喜欢PHP位。您真的要为联系人创建文件吗？使用 mysql 数据库会好得多。另外，向该文件添加一些中断也会很好......

其他想法，IE不支持占位符。

 cell1.innerHTML="<?php echo $customerDESC; ?>";
 cell2.innerHTML="<?php echo $comm; ?>";
 cell3.innerHTML="<?php echo $expressFEE; ?>";
 cell4.innerHTML="<?php echo $totao_unit_price; ?>";

它像一个魅力一样工作，JavaScript在php while循环中