PHP 从表单到数据库 - 没有错误，但没有结果

Question

我正在尝试使用 PHP 创建申请表。我设置了 HTML 标记，并创建了 PHP 处理器。不幸的是，无济于事。我没有收到任何错误，但数据库也没有更新。如果您能看看我的代码，那就太好了。

HTML 标记：

<form method="post" action="<?php echo base_url();?>index.php/new_post" id="application-form">
                        <table class="application">
                            <tbody>
                                <tr>
                                    <td class="left">Question 1</td>
                                    <td><input type="text" size="30" name="question1" id="question1"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 2</td>
                                    <td><input type="text" size="30" name="question2" id="question2"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 3</td>
                                    <td><input type="text" size="30" name="question3" id="question3"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 4</td>
                                    <td><input type="text" size="30" name="question4" id="question4"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 5</td>
                                    <td><textarea rows="4" cols="30" name="question5" id="question5"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 6</td>
                                    <td><textarea rows="4" cols="30" name="question6" id="question7"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 7</td>
                                    <td><input type="text" size="30" name="question7" id="question7"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 8</td>
                                    <td><textarea rows="4" cols="30" name="question8" id="question8"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 9</td>
                                    <td><textarea rows="4" cols="30" name="question9" id="question9"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 10</td>
                                    <td><textarea rows="4" cols="30" name="question10" id="question10"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 11</td>
                                    <td><textarea rows="4" cols="30" name="question11" id="question11"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 12</td>
                                    <td><input type="text" size="30" name="question12" id="question12"/></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 13</td>
                                    <td><textarea rows="4" cols="30" name="question13" id="question13"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 14</td>
                                    <td><textarea rows="4" cols="30" name="question14" id="question14"></textarea></td>
                                </tr>
                                <tr>
                                    <td class="left">Question 15</td>
                                    <td><input type="text" size="30" name="question15" id="question15"/></td>
                                </tr>                           
                            </tbody>
                        </table>
                        <button type="submit" class="btn btn-block btn-danger martop15">Send Application</button>
                    </form>

PHP 处理器：

<?php 
    if(!empty($_POST)){
        $question1 = $_POST['question1']; 
        $question2 = $_POST['question2']; 
        $question3 = $_POST['question3']; 
        $question4 = $_POST['question4']; 
        $question5 = $_POST['question5']; 
        $question6 = $_POST['question6']; 
        $question7 = $_POST['question7']; 
        $question8 = $_POST['question8']; 
        $question9 = $_POST['question9']; 
        $question10 = $_POST['question10']; 
        $question11 = $_POST['question11']; 
        $question12 = $_POST['question12']; 
        $question13 = $_POST['question13']; 
        $question14 = $_POST['question14']; 
        $question15 = $_POST['question15']; 

    }

        $mysqli = new mysqli('localhost', 'root', '', 'database');

        $mysqli->query("INSERT INTO `applications`(`question1`, `question2`, `question3`, `question4`, `question5`, `question6`, `quesion7`, `question8`, `question9`, `question10`, `question11`, `question12`, `question13`, `question14`, `question15`) VALUES (`$question1`, `$question2`, `$question3`, `$question4`, `$question5`, `$question6`, `$question7`, `$question8`, `$question9`, `$question10`, `$question11`, `$question12`, `$question13`, `$question14`, `$question15`)");
?>

提前致谢。

Answer 1

请使用

   $queryResult =  $mysqli->query("INSERT INTO applications(question1, question2, question3, question4, question5, question6,quesion7, question8, question9, question10, question11, question12, question13, question14,question15) VALUES ('$question1', '$question2', '$question3', '$question4', '$question5', '$question6', '$question7', '$question8', '$question9', '$question10','$question11', '$question12', '$question13','$question14', '$question15')");

从 insert into TableName (here,here)

中删除 ``

用于错误处理

if ($queryResult === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: ";
}

Answer 2

如果您的语句失败，您可以通过执行以下操作输出错误消息：

if (!$mysqli->query("INSERT INTO `applications`(`question1`, `question2`, `question3`, `question4`, `question5`, `question6`, `quesion7`, `question8`, `question9`, `question10`, `question11`, `question12`, `question13`, `question14`, `question15`) VALUES (`$question1`, `$question2`, `$question3`, `$question4`, `$question5`, `$question6`, `$question7`, `$question8`, `$question9`, `$question10`, `$question11`, `$question12`, `$question13`, `$question14`, `$question15`)")) {
  printf("Error message: %s\n", $mysqli->error);
}

对于 INSERT 语句，如果语句成功，$mysqli->query 语句将 return TRUE，否则 FALSE。以上内容应该可以让您了解哪里出了问题。

编辑：

您使用的 VALUES 不正确 identifiers，是刻度线，应该是常规的单引号。

改为：

if (!$mysqli->query("INSERT INTO `applications` (`question1`, `question2`, `question3`, `question4`, `question5`, `question6`, `quesion7`, `question8`, `question9`, `question10`, `question11`, `question12`, `question13`, `question14`, `question15`) VALUES ('$question1', '$question2', '$question3', '$question4', '$question5', '$question6', '$question7', '$question8', '$question9', '$question10', '$question11', '$question12', '$question13', '$question14', '$question15')")) {
  printf("Error message: %s\n", $mysqli->error);
}

N.B.:

此外，您可能拼错了 "quesion7" 列，该列最有可能读作 "question7"。

如果是这种情况应该修改，但上面的代码中没有。

重要提示：

您当前的密码对SQL injection. Use mysqli with prepared statements, or PDO with prepared statements开放。

Answer 3

在您的代码中，您为数据库字段名称添加了引号，我认为这是个问题

$mysqli->query("INSERT INTO applications (question1, question2, question3, question4, question5, question6, quesion7, question8, question9, question10,question11, question12, question13, question14, question15) VALUES (`$question1`, `$question2`, `$question3`, `$question4`, `$question5`, `$question6`, `$question7`, `$question8`, `$question9`, `$question10`, `$question11`, `$question12`, `$question13`, `$question14`, `$question15`)");

试试这个。我怀疑在表单操作中你通过“/”分隔的段传递是否在核心中有这种支持 php 实际上我们仅在某些我们使用“/”的框架中传递查询字符串“/”

PHP 从表单到数据库 - 没有错误，但没有结果

PHP Form to Database - No error, yet no result

php

mysql

database

validation