如何使用HTML按钮单击调用PHP函数？ [关闭]

问题描述：

I am a beginner with HTML and PHP and i am having problems with my code. all I need to do is to call a particular function on the button click in html. both the fuction and html are on same page. whenever i run this this doesn't generate the required output. I shall be very thankful for help. please help as soon as possiblemyfirstpage.php

我是HTML和PHP的初学者，我的代码出现问题。我需要做的就是在html按钮上调用一个特定的函数。功能和html都在同一页面上。每当我运行它时，这不会产生所需的输出。我非常感谢你的帮助。请尽快帮助 myfirstpage.php p> div >

答

Like this?

<?php
  if (isset($_POST['submit'])) {
    someFunction();
  }
  function someFunction() {
    echo 'HI';
  }
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <form action="" method="POST">
      <input type="submit" name="submit">
    </form>
</body>
</html>

Although quite weird, this will work, you can use $_GET if you want

答

You are communicating with two languages:

HTML which is client-side language PHP which is server-side language

You can't run PHP without communicating with server.

So to achieve that you need to write ajax function in javascript to make

$('button').click(function() {
    $.ajax({
        type: "POST",
        url: "sum.php",
        data: { input: "your values here" },
        function (response) {
            alert('sum performed sucessfully');
       }
    })  
});

And your sum function in sum.php file

答

Try these code:

function validateForm() {
            var x = document.forms["myForm"]["fname"].value;
            if (x == "") {
                alert("Name must be filled out");
                return false;
            }else{
                alert("Your name has been successfully submitted!!");
                return true;
            }
        }

<form name="myForm" action="/action_page_post.php" onsubmit="return validateForm()" method="post">
        Name: <input type="text" name="fname">
        <input type="submit" value="Submit">
    </form>

</div>

如何使用HTML按钮单击调用PHP函数？ [关闭]

相关推荐