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php mysql基于用户输入表单

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我无法使用复选框来选择要处理和显示的PHP / AJAX的一个或多个数据字段.我的PHP&AJAX在我的< select>上工作得非常好,但是当我尝试设置复选框时,所有地狱都会失败.

我也非常不确定如何进一步防止网站上的SQL注入,所以如果有人能够填补我更多关于这一点我会非常感激它！我阅读了我提供的链接,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所以我会留下一个链接到实际网站)

Link to Agent search page

我的php页面显示数据：

<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);
?>

我很感激这个主题的任何和所有帮助！每当我将复选框值添加到我的php文件时,它最终会在数据库中显示表单中所有字段的所有人.

我也试图阻止sql注入,但如果我没有用户可以输入文本的字段,用户怎么能这样做呢？

编辑截至今天,我尝试使用jQuery激活复选框,然后调用一些AJAX.
这是我写的剧本,它正在拉动代理人,而不是每个拥有“专业知识”的人.

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

解决方法:

这是我最近工作的一个简单示例,我需要循环遍历多个复选框并将这些值传递给SQL语句.虽然这个例子发生在点击按钮上,但希望它与你想要完成的事情有关,或者至少在开始时……

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