PHP如果选中了单选按钮,请填写文本字段

时间:2015-01-26 21:49:44

标签: php button if-statement radio

我一直在试图解决这个小问题,并准备好把我的头发拉出来。我是一名设计师,而不是一名程序员,但我已经为我的学校在php中创建了一个提交表单。这是我正在研究的测试表格:

http://www.inrf.uci.edu/php-form-test/

我想要做的是当一个人选择外部用户时,他们应该被要求填写他们的公司名称。当有人选择内部用户时,他们需要填写他们的组/ PI名称。这不行。当我选择内部时,它应该只需要组/ PI名称而不是公司名称。我将不胜感激任何帮助。谢谢!

这是我的PHP代码:

// internal selected (group pi)

if ($userType == 'internal') {
    $internalChecked = ' checked="checked" ';
} else {
    if(trim($_POST['grpPI']) === '') {
        $grpPIError = '<span class="error">Please enter your group or PI name.</span>';
        $hasError = true;
    } else {
        $grpPI = trim($_POST['grpPI']);
    }
}

    }

// external selected (company name)

 if ($userType == 'external') {
    $externalChecked = ' checked="checked" ';
 } else {
    if(trim($_POST['companyName']) === '') {
        $companyNameError = '<span class="error">Please enter your company name.</span>';
        $hasError = true;
    } else {
        $companyName = trim($_POST['companyName']);
    }
 }

和HTML在这里:

<table class="usertype" id="usertype">   

                         <tr>
                           <td colspan="2">
                             <input type="radio" name="userType" value="external" <?php echo $externalChecked; ?>>External 
                             <select name="externalSelect" size="1">
                               <option selected="selected">Select</option>
                               <option>Academic</option>
                               <option>Non-Profit</option>
                               <option>Commercial</option>
                           </select><?php if($externalError != '') { ?><span class="error"><?=$externalError;?></span><?php } ?></td>
           </tr>
                         <tr>
                           <td colspan="2"><label for="companyName">Company Name:</label> 
                           <input type="text" size="40" name="companyName" id="companyName" value="<?php if(isset($_POST['companyName'])) echo $_POST['companyName'];?>" />
                <?php if($companyNameError != '') { ?>
                <span class="error"><?=$companyNameError;?></span><?php } ?></td>
                         </tr>
                         <tr>
                           <td colspan="3"><input type="radio" name="userType" value="internal" <?php echo $internalChecked; ?>>Internal &nbsp;&nbsp;&nbsp;&nbsp;<input title="Enter Account String. Required for Internal Users." type="text" size="30" name="ucfund" value="<?php if(isset($_POST['ucfund'])) echo $_POST['ucfund'];?>" placeholder="KFS or Account (eg. xxxxxxx)" /><?php if($ucfundError != '') { ?><span class="error"><?=$ucfundError;?></span><?php } ?>&nbsp;-&nbsp; <input title="Enter Fund String. Required for Internal Users." type="text" size="25" name="ucfund2" value="<?php if(isset($_POST['ucfund2'])) echo $_POST['ucfund2'];?>" placeholder="Fund (eg. xxxxx)" /><?php if($ucfund2Error != '') { ?><span class="error"><?=$ucfund2Error;?></span><?php } ?><br /><span class="small">(Please enter KFS number or Accound Fund)</span>
</td>
                         </tr>

                         <tr>
                           <td colspan="3">Optional&nbsp;&nbsp;&nbsp;&nbsp;<input type="text" size="30" name="sub" value="<?php if(isset($_POST['sub'])) echo $_POST['sub'];?>" placeholder="Sub" /><?php if($subError != '') { ?><span class="error"><?=$subError;?></span><?php } ?>&nbsp;-&nbsp; <input type="text" size="25" name="proj" value="<?php if(isset($_POST['proj'])) echo $_POST['proj'];?>" placeholder="Project" /><?php if($projError != '') { ?><span class="error"><?=$projError;?></span><?php } ?>
</td>
                         </tr>
                         <tr>
                           <td colspan="3"><label for="grpPI">Group / PI:</label> 
                           <input type="text" size="40" name="grpPI" id="grpPI" value="<?php if(isset($_POST['grpPI'])) echo $_POST['grpPI'];?>" />
                <?php if($grpPIError != '') { ?>
                <span class="error"><?=$grpPIError;?></span><?php } ?></td>
                </tr>

      </table>

1 个答案:

答案 0 :(得分:1)

请注意你的逻辑:

if ($user == 'internal') {
   ...
} else {
   ... check for empty field ...
}

因此,如果用户选择&#39;外部&#39;,那么&#34;仅内部&#34;字段将为空,并强制出错。为什么要设置内部字段,因为用户选择&#34;外部&#34;。

同样,对于external检查,仅限内部字段将为空,您会强制执行其他错误。

您需要else子句将这两个if()语句绑定在一起,以便只执行两个代码路径中的一个:

if ($user == 'internal') {
   ... do internal-only checks ...
} else if ($user == 'external') {
   ... do external-only checks ...
} else {
   ... $user is undefined type, "zomg how'd you get here" error handling.
}