基于用户输入表单的php mysql

Question

我在使用复选框选择一个或多个数据字段以供 PHP/AJAX 处理和显示时遇到问题。我的 PHP/AJAX 在我的<select>s上运行良好，但是一旦我尝试设置复选框，所有的坏消息都会丢失。

我也非常不确定如何进一步防止网站上的 SQL 注入，所以如果有人能告诉我更多关于这方面的信息，我将不胜感激！我阅读了提供的链接，只是不明白bid_param或 PDO 是如何工作的。

ajax 脚本：（我似乎无法插入 ajax/js 所以我会留下一个指向实时站点的链接）

链接到代理搜索页面

我的显示数据的 php 页面：

<div id="bodyA">
    <h1>Find a Local OAHU Agent.</h1>
    <!-- This is where the data is placed. -->  
</div>
<div id="sideB">
    <div class="sideHeader">
        <em>Advanced Search</em>            
    </div>
    <form class="formC">
        <label for="last">Last Name</label><br />
        <select id="last" name="Last_Name" onChange="showUser(this.value)">
<?php 
    include 'datalogin.php';

    $result = mysqli_query($con, "SELECT DISTINCT Last_Name FROM `roster` ORDER BY Last_Name ASC;");
    echo '<option value="">' . 'Select an Agent' .'</option>';
    while ($row = mysqli_fetch_array($result)) {
        echo '<option value="'.$row['Last_Name'].'">'.$row['Last_Name'].'</option>';
    }
?>
        </select>
        <label for="company">Company</label><br />
        <select id="company" name="users" onChange="showUser(this.value)">
<?php 
    include 'datalogin.php';

    $result = mysqli_query($con, "SELECT DISTINCT Company FROM `roster` ORDER BY Company ASC;");
echo '<option value="">' . 'Select a Company' .'</option>';
    while ($row = mysqli_fetch_array($result)) {
        if ($row['Company'] == NULL) {
        } else {
            echo '<option value="'.$row['Company'].'">'.$row['Company'].'</option>';
        }
    }
?>
        </select>
        <label for="WorkCity">City</label><br />
        <select id="WorkCity" name="WorkCity" onChange="showUser(this.value)" value="city">
<?php 
    include 'datalogin.php';

    $result = mysqli_query($con, "SELECT DISTINCT WorkCity FROM `roster` ORDER BY WorkCity ASC;");
    echo '<option value="">' . 'Select a City' .'</option>';
    while ($row = mysqli_fetch_array($result)) {
        echo '<option value="'.$row['WorkCity'].'">'.$row['WorkCity'].'</option>';
    }
?>
        </select>
        <label for="WorkZipCode">Zip Code</label><br />
        <select id="WorkZipCode" name="WorkZipCode" onChange="showUser(this.value)">
<?php 
      include 'datalogin.php';

      $result = mysqli_query($con, "SELECT DISTINCT WorkZipCode FROM `roster` ORDER BY WorkZipCode + 0 ASC;");
      echo '<option value="">' . 'Select a Zip Code' .'</option>';
      while ($row = mysqli_fetch_array($result)) {
          echo '<option value="'.$row['WorkZipCode'].'">'.$row['WorkZipCode'].'</option>';
      }
?>
        </select>
        <label for="agent">Agent Expertise</label><br />
        <label for="ancillary"><input type="checkbox" value="Ancillary" name="Ancillary[]" id="ancillary" />Ancillary</label><br />
        <label for="smallgroup"><input type="checkbox" value="Smallgroup" name="Smallgroup[]" id="smallgroup" />Small Group</label><br />
        <label for="largegroup"><input type="checkbox" value="LargeGroup" name="LargeGroup[]" id="largegroup" />Large Group</label><br />
        <label for="medicare"><input type="checkbox" value="Medicare" name="Medicare[]" id="medicare" />Medicare</label><br />
        <label for="longterm"><input type="checkbox" value="LongTerm" name="LongTerm[]" id="longterm" />Long Term Care</label><br />
        <label for="individual"><input type="checkbox" value="Individual" name="Individual[]" id="individual" />Individual Plan</label><br />
        <label for="tpa"><input type="checkbox" value="TPASelfInsured" name="TPASelfInsured[]" id="tpa" />TPA Self Insured</label><br />
        <label for="ppaca"><input type="checkbox" value="CertifiedForPPACA" name="CertifiedForPPACA[]" id="ppaca" />Certified for PPACA</label><br />
    </form>
</div>

我的 php 页面提取信息并将其放入页面上的容器中：

    $q = (isset($_GET['q'])) ? $_GET['q'] : false; // Returns results from user input

    include 'datalogin.php'; // PHP File to login credentials

    $sql="SELECT * FROM `roster` WHERE Company = '".$q."' OR Last_Name = '".$q."' OR WorkCity = '".$q."' OR WorkZipCode = '".$q."' ORDER BY Last_Name ASC";

    $result = mysqli_query($con,$sql) // Connects to database or die("Error: ".mysqli_error($con));

    echo "<h1>" . "Find a Local OAHU Agent." . "</h1>";

    while ($row = mysqli_fetch_array($result)) { // Gets results from the database
                echo "<div class='agentcon'>" . "<span class='agentn'>" . "<strong>".$row['First_Name'] . "&nbsp;" .$row['Last_Name'] . "</strong>" . "</span>" . "<a href=mailto:".$row['Email'] . ">" . "<span class='email'>".$row['Email'] . "</span>" . "</a>" ."<div class='floathr'></div>";
                if ($row['Company'] == NULL) {
                    echo "<p>";
                }
                else {
                    echo "<p>" . "<strong>" .$row['Company'] . "</strong>" . "<br>";
                }
                echo $row['WorkAddress1'] . "&nbsp;" .$row['WorkCity'] . "," . "&nbsp;" .$row['WorkStateProvince'] . "&nbsp;" .$row['WorkZipCode'] . "<br>";
                if ($row['Work_Phone'] !== NULL) {
                    echo "<strong>" . "Work" . "&nbsp;" . "</strong>" .$row['Work_Phone'] . "<br>";
                }
                if ($row['Fax'] !== NULL) {
                    echo "<strong>" . "Fax" . "&nbsp;" . "</strong>" .$row['Fax'] . "<br>";
                }
                echo "<strong>" . "Agent Expertise:" . "</strong>";
                if ($row['Ancillary'] == 1) {
                        echo "&nbsp;" . "Ancillary" . "/";
                }
                if ($row['SmallGroup'] == 1) {
                        echo "&nbsp;" . "Small Group" . "/";
                }
                if ($row['IndividualPlans'] == 1) {
                        echo "&nbsp;" . "Individual Plans" . "/";
                }
                if ($row['LongTermCare'] == 1) {
                        echo "&nbsp;" . "Long Term Care" . "/";
                }
                if ($row['Medicare'] == 1) {
                        echo "&nbsp;" . "Medicare" . "/";
                }
                if ($row['LargeGroup'] == 1) {
                        echo "&nbsp;" . "LargeGroup" . "/";
                }
                if ($row['TPASelfInsured'] == 1) {
                        echo "&nbsp;" . "TPA Self Insured" . "/";
                }
                if ($row['CertifiedForPPACA'] == 1) {
                        echo "&nbsp;" . "Certified For PPACA";
                }
                echo "</p>" . "</div>";
    }
    mysqli_close($con);
?>

我感谢有关此主题的所有帮助！每当我将复选框值添加到我的 php 文件时，它最终都会显示数据库中表单中所有字段的每个人。

我也试图防止对此进行 sql 注入，但是如果我没有用户可以输入文本的字段，用户如何执行此操作？

编辑截至今天，我尝试使用 jQuery 激活复选框，然后调用一些 AJAX。这是我写的脚本，它正在拉一个代理，只是不是每个人都拥有“专业知识”。

$('input').click(function() {
        $.ajax({
            url: "process.php",
            data: { value: 1},
            success: function (data) {
                $('#bodyA').html(data);
            }
        });
    });

Answer 1

我做到了！！哇哦！我最终只是制作了一个名为 Expertise.php 的单独 php 页面来使用 jquery/ajax 处理复选框。

实现这一点的 jQuery：（感谢上帝，我进入 jQuery 网站查找函数！）

$('input').click(function() {
        $.ajax({
            url: "expertise.php",
            data: { value: 1},
            success: function (data) {
                $('#bodyA').html(data);
            }
        });
    });

除了 sql 之外，PHP 页面与我的 process.php 页面相同：

$sql="SELECT * FROM `roster` WHERE Ancillary = '1' AND SmallGroup = '1' AND CertifiedForPPACA = '1' ORDER BY Last_Name ASC";

如果有人能启发我更多关于如何更好地防止 sql 注入的保护，请随意！

代理搜索页面

好吧，我至少让搜索的两个部分都工作了，但是出现了一个新问题：p

现在，在 sql 中，我可以使用 AND 或 OR，使用 AND 时，它仅拉动拥有所有这些专业知识的代理，而使用 OR 时，它似乎拉动所有人。有任何想法吗？