我在这里有一个下拉菜单:
$pHTML = "";
$moduledrop = isset($_POST['modules']) ? $_POST['modules'] : '';
$moduleHTML .= '<select name="modules" id="modulesDrop">'.PHP_EOL;
$moduleHTML .= '<option value="">Please Select</option>'.PHP_EOL;
....
$moduleHTML .= '</select>';
....
<form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<table>
<tr>
<th>Module: <?php echo $moduleHTML; ?></th>
</tr>
</table>
<p><input id="moduleSubmit" type="submit" value="Submit Module" name="moduleSubmit" /></p>
</form>
我的问题很简单,如果用户选择Please Select
下拉菜单并提交,则应显示Please Select a Module
消息。但它没有显示此消息。为了做到这一点,我需要在下面的代码中进行更改:
if (isset($_POST['moduleSubmit']) || isset($_POST['sessionSubmit'])){
if($_POST['modules'] == ''){
$pHTML = "<span style='color: red'>Please Select a Module</span>";
}else if($sqlnum == 0){
$pHTML = "<span style='color: red'>Sorry, You have No Assessments under this Module</span>";
} else{
$pHTML = "<span style='color: green'>Assessment Successfully Found</span>";
$assessmentform = "<div id='lt-container'>
<form action='".htmlentities($_SERVER['PHP_SELF'])."' method='post' id='assessmentForm'>
<p id='warnings'>{$pHTML}</p>
<p><input id="sessionSubmit" type="submit" value="Submit Assessment" name="sessionSubmit" /></p>
</form>
</div>";
echo $assessmentform;
}
}
答案 0 :(得分:0)
我不确定你的整个脚本究竟是什么样的,并且很难说出你的示例中的代码所在,但我猜$moduledrop = isset($_POST['modules']) ? $_POST['modules'] : '';
导致了这个问题。
您需要将所有代码一起发布。很难看出到底发生了什么。我看到的只有两种形式和两个地方检查是否提交了代码。我只是把它放在一起,让你知道你需要做什么。以下代码有效。如果您仍然需要帮助,请发布整页,以便我知道我在读什么。
尝试:
<?php
$pHTML = "";
$moduledrop = isset($_POST['modules']) ? $_POST['modules'] : '';
$moduleHTML .= '<select name="modules" id="modulesDrop">' . PHP_EOL;
$moduleHTML .= '<option value="">Please Select</option>' . PHP_EOL;
$moduleHTML .= '</select>';
if (!empty($_POST)) {
if ($_POST['modules'] == '') {
$pHTML = "<span style='color: red'>Please Select a Module</span>";
} else if ($sqlnum == 0) {
$pHTML = "<span style='color: red'>Sorry, You have No Assessments under this Module</span>";
} else {
$pHTML = "<span style='color: green'>Assessment Successfully Found</span>";
}
echo $pHTML;
}
?>
<form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<table>
<tr>
<th>Module: <?php echo $moduleHTML; ?></th>
</tr>
</table>
<p>
<input id="moduleSubmit" type="submit" value="Submit Module" name="moduleSubmit" />
</p>
</form>