将HTML表单提交到PHP文件

时间：2017-03-18 12:02:50

标签： php html mysql

我在远程服务器上创建了两个文件。一个是html表单，要求输入一些字段，另一个是php文件，它将获取所有数据并插入数据库。

对于这个来自html文件点击提交按钮我正在调用php文件，但是文件没有得到执行我认为因为当我点击提交它再次重新加载相同的html页面。

html：

   <!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>MCQ Questions</title>
</head>

<body>

<form method="post" >

<p> Enter the question :</p> <input name="question" type="input"> <br><br>

<p> Enter options :</p>
Enter option 1 : <input name="opt1" type="input"> <br><br>
Enter option 2 : <input name="opt2" type="input"> <br><br>
Enter option 3 : <input name="opt3" type="input"> <br><br>
Enter option 4 : <input name="opt4" type="input"> <br><br>

<p> Enter correct answer :</p>

<input name="ans" type="input"> <br><br>

<input type="submit" value = "Submit" onClick = "uploadQuestion.php">

</form>
</body>
</html>

php文件：

    <?php

$question=$_POST['question'];
$option1=$_POST['opt1'];
$option2=$_POST['opt2'];
$option3=$_POST['opt3'];
$option4=$_POST['opt4'];
$ans=$_POST['ans'];


$db_server = mysql_connect("address","username","pass"); 
if(!$db_server) { 
   die("Database connection failed: " . mysql_error()); 
}else{
   $db_select = mysql_select_db("mlm",$db_server); 
   if (!$db_select) { 
       die("Database selection failed:: " . mysql_error()); 
   } 
}

$sql = "INSERT INTO questions (question,answer_a,answer_b,answer_c,answer_d,answer) VALUES ('$question','$option1',$option2,$option3,$option4,$ans)";

if (!mysql_query($sql)) {
    die('Error: ' . mysql_error()); 
}

?>

我也尝试过这种方式：

<input type="submit" value = "Submit" onClick = "http://address/uploadQuestion.php">

但没有任何效果。这里出了什么问题？我是网络开发的初学者，有人可以帮忙吗？谢谢..

编辑：

  $database = new Database('addredd','username','pass','handbook');

  $dbConnection = $database->getDB();

  $stmt = $dbConnection->prepare("insert into questions(question,answer_a,answer_b,answer_c,answer_d,answer) values(?,?,?,?,?,?)");
  $stmt->execute(array($question,$option1,$option2,$option3,$option4,$ans));

我尝试使用pdo语句，但收到此错误： 致命错误：第12行的/var/www/html/uploadQuestion.php中找不到“数据库”类

EDIT2：

我正在尝试在服务器上传一个文件，并希望将其保存在数据库中，所以为此我创建了2个文件，一个是index.php，另一个是uploadFile.php。

正如您现在所示，我使用了pdo，但当我再次点击上传图片时，同一页面正在加载。

的index.php 

    <form action="index.php" method="post" enctype="multipart/form-data">
    <p> Select image to upload:</p>
    <input name = "file" type="file" id="fileToUpload"><br><br>
    Enter chapter name :
    <input name = "chapterName" type = "text"><br><br>
    <input type="submit" value = "Upload Image">
    </form>


<?php

if (isset($_FILES['file']['tmp_name']))
{

    $ch = curl_init();

    $cfile = new CURLFile($_FILES['file']['tmp_name'],$_FILES['file']['type'],$_FILES['file']['name']);

    $data = array("myfile" => $cfile);

    curl_setopt($ch, CURLOPT_URL, "http://host/NewProject/uploadFile.php");
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOTP_POSTFIELDS, $data);

    $response = curl_exec($ch);

    if($response == true)
    {
        echo "File posted";

    }
    else{

        echo "Error: " . curl_error($ch);
    }

}

?>

uploadFile.php 

    <?php
ini_set('display_errors', 1);

if(isset($_FILES['myfile']['tmp_name']))
{
    $path = "files/" . $_FILES['myfile']['name'];

    move_uploaded_file($_FILES['myfile']['tmp_name'], $path);

    $chapterName=$_POST['chapterName']; 

    $dbh = new PDO('mysql:host=host;dbname=database_name','username', 'password');


$stmt = $dbh->prepare("INSERT INTO chapters (title,file) VALUES (?, ?)");
$stmt->execute(array($chapterName,$path));

if ($dbh->lastInsertId())
{
    echo 'File upploaded.';
}
else
{
    echo 'File could not upload.';
}


}
    ?>

请帮忙......谢谢..

2 个答案:

答案 0 :(得分：1)

首先修复您的表单，type=""无法命名为input，您可以在此处查看https://www.w3schools.com/tags/att_input_type.asp 

<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>MCQ Questions</title>
</head>

<body>

  <form action="uploadQuestion.php" method="post" enctype="multipart/form-data">

    <p> Enter the question :</p> <input name="question" type="text"> <br><br>

    <p> Enter options :</p>
    Enter option 1 : <input name="opt1" type="text"> <br><br>
    Enter option 2 : <input name="opt2" type="text"> <br><br>
    Enter option 3 : <input name="opt3" type="text"> <br><br>
    Enter option 4 : <input name="opt4" type="text"> <br><br>

    <p> Enter correct answer :</p>

    <input name="ans" type="text"> <br><br>

    <input type="submit" value="Submit">

  </form>
</body>

</html>

然后你的php代码

<?php

// mysql connection
$db_server = mysql_connect("address","username","pass"); 

// check for mysql connection
if(!$db_server)
{ 
    die("Database connection failed: " . mysql_error()); 
}
else
{
    // check if database exists
    $db_select = mysql_select_db("mlm",$db_server); 

    if (!$db_select)
    { 
        die("Database selection failed:: " . mysql_error()); 
    } 
}

// escape post variables
$question = mysql_real_escape_string($_POST['question']);
$option1 = mysql_real_escape_string($_POST['opt1']);
$option2 = mysql_real_escape_string($_POST['opt2']);
$option3 = mysql_real_escape_string($_POST['opt3']);
$option4 = mysql_real_escape_string($_POST['opt4']);
$ans = mysql_real_escape_string($_POST['ans']);




// make query
$sql = "INSERT INTO questions (question,answer_a,answer_b,answer_c,answer_d,answer) VALUES ('$question', '$option1', '$option2', '$option3', '$option4', '$ans')";

// check if query runs    
if (!mysql_query($sql)) {
    die('Error: ' . mysql_error()); 
}

?>

或php与mysqli 

<?php

// host, username, password, database name
$db_server = mysqli_connect("address", "username", "pass", "mlm"); 

// check for connection
if(!$db_server)
{ 
   die("Database connection failed: " . mysqli_error($db_server)); 
}

// escape post variables
$question = mysqli_real_escape_string($db_server, $_POST['question']);
$option1 = mysqli_real_escape_string($db_server, $_POST['opt1']);
$option2 = mysqli_real_escape_string($db_server, $_POST['opt2']);
$option3 = mysqli_real_escape_string($db_server, $_POST['opt3']);
$option4 = mysqli_real_escape_string($db_server, $_POST['opt4']);
$ans = mysqli_real_escape_string($db_server, $_POST['ans']);

// make query
$sql = "INSERT INTO questions (question,answer_a,answer_b,answer_c,answer_d,answer) VALUES ('$question', '$option1', '$option2', '$option3', '$option4', '$ans')";

// check if query runs
if (!mysqli_query($db_server, $sql))
{
    die('Error: ' . mysqli_error($db_server)); 
}

?>

或php准备好的陈述

<?php

// mysql connection
$dbh = new PDO('mysql:host=adress;dbname=database_name', 'username', 'password');

// escape post variables
$question = $_POST['question'];
$option1 = $_POST['opt1'];
$option2 = $_POST['opt2'];
$option3 = $_POST['opt3'];
$option4 = $_POST['opt4'];
$ans = $_POST['ans'];


$stmt = $dbh->prepare("INSERT INTO questions (question,answer_a,answer_b,answer_c,answer_d,answer) VALUES ( ?, ?, ?, ?, ?, ?)");
$stmt->execute(array($question, $option1, $option2, $option3, $option4, $ans));

if ($dbh->lastInsertId())
{
    echo 'Sucess.';
}
else
{
    echo 'Fail.';
}

?>

答案 1 :(得分：-2)

将您的代码更改为此

<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>MCQ Questions</title>
</head>

<body>

  <form action="uploadQuestion.php" method="post" enctype="multipart/form-data">

    <p> Enter the question :</p> <input name="question" type="input"> <br><br>

    <p> Enter options :</p>
    Enter option 1 : <input name="opt1" type="input"> <br><br> Enter option 2 : <input name="opt2" type="input"> <br><br> Enter option 3 : <input name="opt3" type="input"> <br><br> Enter option 4 : <input name="opt4" type="input"> <br><br>

    <p> Enter correct answer :</p>

    <input name="ans" type="input"> <br><br>

    <input type="submit" value="Submit">

  </form>
</body>

</html>

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