Javascript 使用HTML按钮调用PHP函数
我正在使用php开发网站。我需要使用HTML Onclick事件调用php函数。如何做？这里我给出了我的代码Javascript 使用HTML按钮调用PHP函数,javascript,php,jquery,html,mysql,Javascript,Php,Jquery,Html,Mysql,我正在使用php开发网站。我需要使用HTML Onclick事件调用php函数。如何做？这里我给出了我的代码 <?php function insert() { echo "in insert "; $servername = "localhost"; $username = "shwetharao"; $password = "shwetha"; $dbname = "semilab"; // Create connection
<?php
function insert() {
echo "in insert ";
$servername = "localhost";
$username = "shwetharao";
$password = "shwetha";
$dbname = "semilab";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$uname = $_POST['usernameu'];
$upass = $_POST['passwordu'];
echo $uname;
$sql = "INSERT INTO login (id, username, password)VALUES ('id','$uname','$upass')";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
}
?>
<!DOCTYPE HTML>
<head>
<title></title>
</head>
<body>
<div id="main">
<div id="login">
<h2>Create User Account</h2>
<form action="" method="post">
<br><br><br>
<label>UserName :</label>
<br><br>
<input id="name" name="usernameu" placeholder="username" type="text">
<br><br><br>
<label>Password :</label>
<br><br>
<input id="password" name="passwordu" placeholder="**********" type="password">
<br><br><br>
<input name="button" type="button" value=" Create user " onclick="insert();">
</form>
</div>
</div>
</body>
</html>
试试这个
<?php if(isset($_POST['submit'])){
insert();
}
?>
<!DOCTYPE HTML>
<head>
<title></title>
</head>
<body>
<div id="main">
<div id="login">
<h2>Create User Account</h2>
<form action="" method="post">
<br><br><br>
<label>UserName :</label>
<br><br>
<input id="name" name="usernameu" placeholder="username" type="text">
<br><br><br>
<label>Password :</label>
<br><br>
<input id="password" name="passwordu" placeholder="**********" type="password">
<br><br><br>
<input name="submit" type="submit" value=" Create user" >
</div>
</div>
</body>
</html>
创建用户帐户
用户名：
密码：
只需更改
<input name="button" type="button" value="Create user" onclick="insert();">
您犯了两个错误，第一个是上面的php标记，您只写了“？”请将其更改为“
在表单内部，您不需要编写action
page name.。例如action=“myFile.php”
PHP：仅由服务器运行，并响应诸如单击链接（GET）或提交表单（POST）之类的请求
HTML和Javascript：仅在某人的浏览器中运行
我假设您的文件看起来像：
创建用户帐户
用户名：
密码：
===============================================
<?php
if($_GET['button1']){fun1();}
if($_GET['button2']){fun2();}
function fun1()
{
//This function will update some column in database to 1
}
function fun2()
{
//This function will update some column in database to 2
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title></title>
</head>
<body>
<button id="btnfun1" name="btnfun1" onClick='location.href="?button1=1"'>Update to 1</button>
<button id="btnfun2" name="btnfun2" onClick='location.href="?button2=1"'>Update to 2</button>
</body>
</html>
更新至1
更新至2
我是用这个代码做的。希望这能有所帮助。我认为您需要进行AJAX调用，以便您点击的URL将运行php函数。AJAX就是。。。或通过html/phpif提交表单（isset（$_POST['buttonName']）{}试试这个，我已经给出了关于前面这个问题的完整演示。。试试这个：最初我试图通过ajax工作，但我无法做到这一点。非常感谢你……它成功了。：-。
<?php if(isset($_POST['submit'])){
//paste you php code here
}
?>
<?php
function insert() {
echo 'I just ran a php function';
}
if(isset($_POST['submit'])){
insert();
}
?>
<!DOCTYPE HTML>
<head>
<title></title>
</head>
<body>
<div id="main">
<div id="login">
<h2>Create User Account</h2>
<form action="" method="post">
<br><br><br>
<label>UserName :</label>
<br><br>
<input id="name" name="usernameu" placeholder="username" type="text">
<br><br><br>
<label>Password :</label>
<br><br>
<input id="password" name="passwordu" placeholder="**********" type="password">
<br><br><br>
<input name="submit" type="submit" value=" Create user" >
</div>
</div>
</body>
</html>
<?php
if($_GET){
if(isset($_GET['insert'])){
insert();
}elseif(isset($_GET['select'])){
select();
}
}
function select()
{
echo "The select function is called.";
}
function insert()
{
echo "The insert function is called.";
}
?>
<input type="submit" class="button" name="insert" value="insert" />
<input type="submit" class="button" name="select" value="select" />
<?php
if($_GET['button1']){fun1();}
if($_GET['button2']){fun2();}
function fun1()
{
//This function will update some column in database to 1
}
function fun2()
{
//This function will update some column in database to 2
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<title></title>
</head>
<body>
<button id="btnfun1" name="btnfun1" onClick='location.href="?button1=1"'>Update to 1</button>
<button id="btnfun2" name="btnfun2" onClick='location.href="?button2=1"'>Update to 2</button>
</body>
</html>