处理大量重复 If 语句检查的 SMART 方法是什么?

What is a SMART WAY to deal with a lot of repeated If statements checks?

在我尝试为我在本科论文中创建的数据库创建搜索工具时,我需要对用户输入的值进行大量检查,并根据这些值,生成并执行适当的 MySQL query。示例如下:

HTML Code

(part of the whole table)
<tr id="tablerow" class="">
              <th id="selectth">
                <select class="selection" name="Attributes" id="Attributes">
                  <!-- List of all the available attributes for the user to select for the searching queries -->
                  <option disabled>Options</option>
                  <option value="Name" id="p_Name">Name</option>
                  <option value="ID" id="p_Id">Patient ID</option>
                  <option value="Sex" id="p_Sex">Sex</option>
                  <option value="Email" id="p_Email">Patient Email</option>
                  <option value="Age" id="p_Age">Age ></option>
                  <option value="Agesmaller">Age < </option>
                  <option value="Race" id="p_Race">Race</option>
                  <option value="PhoneNumber" id="p_Phonenum">Phone Number</option>
                  <option value="Comorbidities" id="p_Comorbidities">Comorbidities</option>
                  <option value="EDSS" id="p_eddsscore">EDSS Score</option>
                  <option value="Pregnant" id="p_Pregnant">Is Pregnant</option>
                  <option value="Onsetlocalisation" id="p_Onsetlocalisation">Onset Localisation</option>
                  <option value="Smoker" id="p_Smoker">Is a Smoker</option>
                  <option value="onsetsymptoms" id="p_onsetsymptoms">Onset Symptoms</option>
                  <option value="MRIenhancing" id="p_MRIenhancing">MRI Enhancing Lesions</option>
                  <option value="MRInum" id="p_MRInum">MRI Lesion No.</option>
                  <option value="MRIonsetlocalisation" id="p_MRIonsetlocalisation">MRI Onset Localisation</option>
                </select>
              </th>

并且作为相同 table 的另一部分,我有一个按钮允许用户创建第二行输入以进行更具体的搜索,具有 2 个属性,使用 AND 或使用 OR 语句。 <button type="button" id="new_row_btn" onclick="addRow()" name="new_row">Add an extra row</button>

我想保留这个 post 排序以便收到答案,所以我不会包括 addRow() JavaScript 函数,但是如果它是有必要请评论,我会尽快编辑。

我的问题如下,我有这两个输入,我想检查用户是否在第二行输入(在“高级”输入中)输入了任何内容,然后根据新值执行适当的查询。

PHP 代码现在看起来像这样:

PHP Code

if($option == 'Name' && $newoption == 'Email' && !empty($newEmail)){
                $sql = "SELECT patients.Patient_id,patients.Patient_name,patients.DOB,patients.Phonenum,patients.Email,MSR.Sex FROM patients,MSR WHERE patients.Patient_id = MSR.NDSnum AND Doctor_ID = $usersid AND patients.Email = '$newEmail' $and_or patients.Patient_name LIKE '%$entry%' ORDER BY Patient_id";
                $result = $pdo->query($sql);
                if ($result->rowCount() > 0) {
                  while ($row = $result->fetch()) { ?>
                    <table id="standard">
                      <tr>
                        <th>Patient ID</th>
                        <th>Name</th>
                        <th>Date of Birth</th>
                        <th>Phone Number</th>
                        <th>Email</th>
                        <th>Sex</th>
                        <th>Previous Visits</th>
                      </tr>
                      <tr>
                        <td><?php echo $row['Patient_id']; ?></td>
                        <td> <?php echo $row['Patient_name']; ?> </td>
                        <td><?php echo $row['DOB']; ?></td>
                        <td><?php echo $row['Phonenum']; ?></td>
                        <td><?php echo $row['Email']; ?></td>
                        <td><?php echo $row['Sex']; ?></td>
                        <td><?php echo "<a href='/application/previousvisit-bootstrap.php?id=" . $row['Patient_id'] . "'>Previous Visits</a>"; ?></td>
                      </tr>
                    </table>
                    <div class="line"></div>
                  <?php }
                 } else {
                  echo "No patient exists with this information. Name+Email";
                }
              } if ($option == 'Name' && $newoption == 'Age' && !empty($newAge)){
                $sql = "SELECT * FROM patients WHERE timestampdiff(year,dob,curdate()) > '$entry' $and_or patients.Patient_name LIKE '%$entry%' AND Doctor_ID = $usersid ORDER BY Patient_id";
                $result = $pdo->query($sql);
                if ($result->rowCount() > 0) {
                  while ($row = $result->fetch()) { ?>
                    <table id="standard">
                      <tr>
                        <th>Patient Id</th>
                        <th>Patient Name</th>
                        <th>Date of Birth</th>
                        <th>Phone Number</th>
                        <th>Email</th>
                        <th>Previous Visits</th>
                      </tr>
                      <tr>
                        <td><?php echo $row['Patient_id']; ?></td>
                        <td> <?php echo $row['Patient_name']; ?> </td>
                        <td><?php echo $row['DOB'] ?></td>
                        <td><?php echo $row['Phonenum']; ?></td>
                        <td><?php echo $row['Email']; ?></td>
                        <td><?php echo "<a href='/application/previousvisit-bootstrap.php?id=" . $row['Patient_id'] . "'>Previous Visits</a>"; ?></td>
                      </tr>
                    </table>
                    <div class="line"></div>
                  <?php }
                } else {
                  echo "No patient exists with this information. Name+Age";
                }

上面的 if 语句又进行了大约 20 次......每次检查一个属性与另一个属性的关系......例如 Name+newIDID+newNameEmail+newSex 显然我知道我还没有完成,这些属性有数百种可能的组合,但我想知道是否有某种方法可以避免这一切并使其更容易....

很抱歉这个问题太长了!欢迎任何关于如何使这个问题更好的注释。

提前感谢您的宝贵时间。

也许将相同的 IF 条件组合在一起?

以下是我要推荐的内容:

if ($option == 'Name') {
    if ($newoption == 'Email' && !empty($newEmail)) {
        //...
    }
    if ($newoption == 'Age' && !empty($newAge)) {
        //...
    }
}

重复少一点:

if ($option == 'Name') {
    // use this 'if', if $newoption correlates to which child if is populated...
    if ($newoption == 'Email' || $newoption == 'Age') {
        if (!empty($newEmail)) {
            //...
        }
        if (!empty($newAge)) {
            //...
        }
    }
}