我是php新手，如果我看起来很傻，请原谅我。我仍然在网上论坛和堆栈社区的帮助下一步一步地学习。
我有一个在线表格，代码如下：
<?php
define('DIR_APPLICATION', str_replace('''', '/', realpath(dirname(__FILE__))) . '/');
include(DIR_APPLICATION."config.php");
ob_start();
session_start();
$msg = 'none';
$sql = '';
if(isset($_POST['email']) && $_POST['email'] != '' && isset($_POST['password']) && $_POST['password'] != ''){
if($_POST['usertype'] == 'admin'){
//here for admin
$sql= mysql_query("SELECT * FROM admin WHERE a_email = '".make_safe($_POST['email'])."' and password = '".make_safe($_POST['password'])."'",$link);
}
else if($_POST['usertype'] == 'teacher'){
//here for teacher
$sql= mysql_query("SELECT * FROM teacher WHERE t_email = '".make_safe($_POST['email'])."' and t_password = '".make_safe($_POST['password'])."'",$link);
}
else if($_POST['usertype'] == 'student'){
//here for student
$sql= mysql_query("SELECT * FROM student WHERE s_email = '".make_safe($_POST['email'])."' and s_password = '".make_safe($_POST['password'])."'",$link);
}
else if($_POST['usertype'] == 'parents'){
//here for parent
$sql= mysql_query("SELECT * FROM parent WHERE p_email = '".make_safe($_POST['email'])."' and p_password = '".make_safe($_POST['password'])."'",$link);
}
else if($_POST['usertype'] == 'librarian'){
//here for employee
$sql= mysql_query("SELECT * FROM user WHERE u_email = '".make_safe($_POST['email'])."' and u_password = '".make_safe($_POST['password'])."'",$link);
}
else if($_POST['usertype'] == 'accountant'){
//here for employee
$sql= mysql_query("SELECT * FROM user WHERE u_email = '".make_safe($_POST['email'])."' and u_password = '".make_safe($_POST['password'])."'",$link);
}
if($row = mysql_fetch_array($sql)){
//here success
$_SESSION['objLogin'] = $row;
$_SESSION['login_type'] = $_POST['usertype'];
if($_POST['usertype'] == 'admin'){
header("Location: dashboard.php");
die();
}
else if($_POST['usertype'] == 'teacher'){
header("Location: t_dashboard.php");
die();
}
else if($_POST['usertype'] == 'student'){
header("Location: s_dashboard.php");
die();
}
else if($_POST['usertype'] == 'parents'){
header("Location: p_dashboard.php");
die();
}
else if($_POST['usertype'] == 'accountant'){
header("Location: a_dashboard.php");
die();
}
else if($_POST['usertype'] == 'librarian'){
header("Location: l_dashboard.php");
die();
}
}
else{
$msg = 'block';
}
}
function make_safe($variable)
{
$variable = strip_tags(mysql_real_escape_string(trim($variable)));
return $variable;
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>SITE TITLE | Log in</title>
<!-- Tell the browser to be responsive to screen width -->
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<!-- Bootstrap 3.3.5 -->
<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
<!-- Font Awesome -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
<!-- Ionicons -->
<link rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
<!-- Theme style -->
<link rel="stylesheet" href="dist/css/AdminLTE.min.css">
<!-- iCheck -->
<link rel="stylesheet" href="plugins/iCheck/square/blue.css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body class="hold-transition login-page">
<div class="login-box">
<div class="login-logo">
<a href="index2.html"><b>SITE</b> TITLE</a>
</div>
<!-- /.login-logo -->
<div class="login-box-body">
<p class="login-box-msg">Sign in to start your session</p>
<form onSubmit="return validationForm();" role="form" id="form" method="post">
<div class="form-group has-feedback">
<input type="email" name="email" id="email" class="form-control" placeholder="Email">
<span class="glyphicon glyphicon-envelope form-control-feedback"></span>
</div>
<div class="form-group has-feedback">
<input type="password" name="password" id="password" class="form-control" placeholder="Password">
<span class="glyphicon glyphicon-lock form-control-feedback"></span>
</div>
<div class="form-group has-feedback">
<select class="form-control" name="usertype" id="usertype">
<option value="-1">-- Select User Type --</option>
<option value="admin">Admin</option>
<option value="teacher">Teacher</option>
<option value="student">Student</option>
<option value="parents">Parents</option>
<option value="accountant">Accountant</option>
<option value="librarian">Librarian</option>
</select>
</div>
<div class="row">
<div class="col-xs-8">
<a href="#">Forget Password?</a><br>
</div>
<!-- /.col -->
<div class="col-xs-4">
<button type="submit" id="login" class="btn btn-primary btn-block btn-flat">Sign In</button>
</div>
<!-- /.col -->
</div>
</form>
</div>
<!-- /.login-box-body -->
</div>
<!-- /.login-box -->
<!-- jQuery 2.2.0 -->
<script src="plugins/jQuery/jQuery-2.2.0.min.js"></script>
<!-- Bootstrap 3.3.5 -->
<script src="bootstrap/js/bootstrap.min.js"></script>
<!-- iCheck -->
<script src="plugins/iCheck/icheck.min.js"></script>
<script>
$(function () {
$('input').iCheck({
checkboxClass: 'icheckbox_square-blue',
radioClass: 'iradio_square-blue',
increaseArea: '20%' // optional
});
});
</script>
<script type="text/javascript">
function validationForm(){
if($("#email").val() == ''){
alert("Email Required !!!");
$("#email").focus();
return false;
}
else if($("#password").val() == ''){
alert("Password Required !!!");
$("#password").focus();
return false;
}
else if($("#usertype").val() == '-1'){
alert("Select User Type !!!");
return false;
}
else{
return true;
}
}
</script>
<!-- SCRIPTS -AT THE BOTOM TO REDUCE THE LOAD TIME-->
<!-- JQUERY SCRIPTS -->
<script src="assets/js/jquery-1.10.2.js"></script>
<!-- BOOTSTRAP SCRIPTS -->
<script src="assets/js/bootstrap.min.js"></script>
</body>
</html>
这种形式非常适用。
但我的问题是，我正在为这个在线版本创建一个android表单，我需要一个json响应。所以我在浏览器中尝试了以下操作：
mydomain.com/index.php?email=user@example.com&password=mypass&usertype=student
这将导致相同的页面。
我很困惑为什么这个没有进入页面。我能理解我在某个地方错了，但却搞不清楚。
请帮忙。
正如@Akhil@Vijay和@MiguelJimenez建议的
我把$_POST改成了$_REQUEST，它就像一个魅力
所以，如果有人陷入这个问题，这可能会对你们有所帮助。