我有一个从这个表单中获取数据并将其插入数据库 我无法在网上找到任何解决方案 一切都在浏览器上工作，但数据没有存储到表中，if块内的echo不会打印在屏幕上。 代码可以在下面看到。
HTML
<form action="" method="POST">
<div class="container-fluid">
<div class="container">
<div class="row">
</div>
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-10 col-lg-4 col-md-offset-3" style="top:100px">
<div class="offer offer-radius offer-primary">
<div class="shape">
<div class="shape-text">
<span class="glyphicon glyphicon-user"></span>
</div>
</div>
<div class="offer-content">
<h4 style="margin-left:70px;font-size:20px">Enter your details below and enroll your slot</h4>
<div class="container col-xs-12">
<div class="stepwizard">
<div class="stepwizard-row setup-panel">
<div class="stepwizard-step">
<a href="#step-1" type="button" class="btn btn-primary btn-circle">
<i class="glyphicon glyphicon-user" style="margin-left: -18px;top: -24px;font-size: 90%;"></i></a>
</div>
<div class="stepwizard-step">
<a href="#step-2" type="button" class="btn btn-default btn-circle" disabled="disabled">
<i class="glyphicon glyphicon-education" style="margin-left: -18px;top: -24px;font-size: 90%;"></i></a>
</div>
<div class="stepwizard-step">
<a href="#step-4" type="button" class="btn btn-default btn-circle" disabled="disabled">
<i class="glyphicon glyphicon-ok" style="margin-left: -18px;top: -24px;font-size: 90%;"></i></a>
</div>
</div>
</div>
<div class="row setup-content" id="step-2">
<div class="col-xs-12">
<div class="col-md-10">
<h3>Qualification</h3>
<div class="col-xs-12 col-xs-offset-1" style="top:-50px">
<button class="btn btn-primary nextBtn btn-lg pull-right" type="button" >Next</button>
</div>
<div class="col-xs-12" style="clear:both;top:-45px">
<input maxlength="20" type="text" required="required" class="form-control" placeholder="B Tech" readonly="" />
</div>
<div class="col-xs-12 form-group" style="clear:both;top:-40px">
<label for="subject">
Year of Pass out</label>
<input maxlength="20" type="text" required="required" class="form-control" placeholder="2016" readonly="" />
</div>
<div class="col-xs-12 form-group" style="clear:both;top:-40px">
<label for="subject">
Branch</label>
<select id="subject" name="subject" class="form-control" required="required">
<option value="na" selected="">Choose One:</option>
<option value="service">Computer Science</option>
<option value="suggestions">Information Technology</option>
<option value="product">Electronics & Communication</option>
<option value="product">Electronics & Electrical</option>
<option value="product">Instrumentation</option>
</select>
</div>
<div class="col-xs-12" style="clear:both;top:-40px">
<label for="subject">
Percentage (%)</label>
<input maxlength="6" type="text" class="form-control" placeholder="Your Percentage" name="percentage" />
</div>
</div>
</div>
</div>
</div>
<div class="row setup-content" id="step-1">
<div class="col-xs-12">
<div class="col-md-12">
<div class="container">
<div class="row">
<div class="col-xs-4">
<button class="btn btn-primary nextBtn btn-lg pull-right" type="button" >Next</button>
<h3>Personal Information</h3>
<div class="col-xs-12" style="padding:15px">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-user fa" aria-hidden="true"></i></span>
<input maxlength="100" type="text" class="form-control" placeholder="First Name" name="F_Name" />
</div>
</div>
<div class="col-xs-12" style="clear:both;padding:10px">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-user fa" aria-hidden="true"></i></span>
<input maxlength="100" type="text" class="form-control" placeholder="Last Name" name="L_Name" />
</div>
</div>
<div class="col-xs-12" style="clear:both;padding:10px">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-envelope fa" aria-hidden="true"></i></span>
<input maxlength="100" type="text" class="form-control" placeholder="Your Email" name="EmailID" />
</div>
</div>
<div class="col-xs-12" style="clear:both;padding:10px">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-phone fa" aria-hidden="true"></i></span>
<input maxlength="14" type="text" class="form-control" placeholder="(+91) 555-555-5555" name="Phone_Number" />
</div>
</div>
<div class="col-xs-12" style="clear:both;padding:10px">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-phone fa" aria-hidden="true"></i></span>
<input maxlength="14" type="text" class="form-control" placeholder="Reference Code" name="R_Code" />
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="row setup-content" id="step-4">
<div class="col-xs-12">
<div class="col-xs-12">
<div class="container" style="height:307px;">
<h4>Registered</h4>
<div class="col-xs-4" style="margin-left:-60px;top:60px">
<a href="#"><button class="btn btn-success completeBtn btn-lg pull-right" type="button" name="proceed">Proceed to payment</button></a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</form>
PHP
<?php
$cn= mysqli_connect('localhost','testuser','password','invoicedb');
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
echo "string";
if(isset($_POST["proceed"]))
{echo "string";
$fname=$_POST['F_Name'];
$lname=$_POST['L_Name'];
$emailID=$_POST['EmailID'];
$phone_number=$_POST['Phone_Number'];
$reference_code=$_POST[‘R_Code’];
$branch=$_POST[‘subject’];
$percentage=$_POST[‘percentage’];
echo "insert into students(first_name,last_name,email,phone_number,reference_code,branch,percentage) VALUES ('$fname','$lname','$emailID','$phone_number','$reference_code','$branch','$percentage')";
mysqli_query($cn,"insert into students(first_name,last_name,email,phone_number,reference_code,branch,percentage) VALUES ('$fname','$lname','$emailID','$phone_number','$reference_code','$branch','$percentage')");
//best outside the if statement so user isn't stuck on a white blank page.
header("location:confirm.php");
exit;
}
?>
答案 0 :(得分：1)
只有在提交表单时，您才能访问$_POST[]值
所以，替换它，
<a href="#"><button class="btn btn-success completeBtn btn-lg pull-right" type="button" name="proceed">Proceed to payment</button></a>
有了这个，
<a href="#"><button class="btn btn-success completeBtn btn-lg pull-right" type="submit" name="proceed">Proceed to payment</button></a>
它可以正常运行，而不会将button替换为input。
答案 1 :(得分：0)
如果您在同一页面提交表格，则应使用 -
$(document).ready(function() {
$('#store_select').bind('change', function(e) {
if ($('#store_select').val() == 'finished') {
$("#completedStores").show();
$("#notCompletedStores").hide();
} else if ($('#store_select').val() == 'notFinished') {
$("#completedStores").hide();
$("#notCompletedStores").show();
} else {
$("#completedStores").hide();
$("#notCompletedStores").hide();
}
}).trigger('change');
});答案 2 :(得分：-1)
if(isset($_POST["proceed"])){}
$_POST["proceed"]根本没有设置，它需要一个值来确保它已设置。
而不是检查是否，只需打印帖子值并尝试提交表单。
在php标签内写下代码并尝试回显数据。
echo '<pre>';
print_r($_POST);
echo '----------------';
print_r($_REQUEST);