是的，我知道之前已经多次询问过这个问题，但事实是，在所有这些问题中我都没有明确的答案。
当我明确为该表单选择一个值时，我的$_POST数组似乎永远不会在我的表单中选择我的选择元素。
我在WordPress主题上有一个联系表格：
<form method="post" id="contactform" name="contactform" class="contact-form-native" action="<?php echo get_template_directory_uri() ?>/mail/contact.php">
<div class="col-md-6 margin-15">
<div class="form-group">
<input type="text" id="name" name="name" class="form-control input-lg" placeholder="<?php _e('Name*','framework'); ?>">
</div>
<div class="form-group">
<input type="email" id="email" name="email" class="form-control input-lg" placeholder="<?php _e('Email*','framework'); ?>">
</div>
<div class="form-group">
<input type="text" id="phone" name="phone" class="form-control input-lg" placeholder="<?php _e('Phone','framework'); ?>">
<input type ="hidden" name ="image_path" id="image_path" value ="<?php echo get_template_directory_uri() ?>">
<input id="admin_email" name="admin_email" type="hidden" value ="<?php echo $admin_email; ?>">
<input id="subject" name="subject" type="hidden" value ="<?php echo $subject_email; ?>">
</div>
<div class="form-group">
<select id="event_select" name="event_select" class="form-control">
<option disabled selected value> -- select the event -- </option>
<?php
$args = array(
// Arguments for your query.
'post_type' => 'event',
'meta_query' => array(
'start_date_clause' => array(
'key' => 'imic_event_start_dt',
'value' => date("Y-m-d", strtotime('first day of January '.date('Y-m-d') )),
'compare' => '>'
),
),
'orderby' => 'start_date_clause',
'order' => 'ASC'
);
// Custom query.
$query = new WP_Query( $args );
// Check that we have query results.
if ( $query->have_posts() ) {
// Start looping over the query results.
$count = 0;
while ( $query->have_posts() ) {
$query->the_post();
echo '<option value="' . $count . '">' . date('jS M', strtotime(get_post_meta(get_the_ID(),'imic_event_start_dt',true))) . " - " . date('jS M', strtotime(get_post_meta(get_the_ID(),'imic_event_end_dt',true))) . "</option>";
$count++;
}
}
?>
</select>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<textarea cols="6" rows="7" id="comments" name="comments" class="form-control input-lg" placeholder="<?php _e('Message','framework'); ?>"></textarea>
</div>
</div>
<div class="col-md-12">
<input id="submit" name="submit" type="submit" class="btn btn-primary btn-lg pull-right" value="<?php _e('Submit now!','framework'); ?>">
</div>
</form>
然后在contact.php中处理：
// - grab wp load, wherever it's hiding -
include "../../../../wp-config.php";
if(!$_POST) exit;
if (!defined("PHP_EOL")) define("PHP_EOL", "\r\n");
$event_select = $_POST['event_select'];
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$subject = $_POST['subject'];
当我提交表单时，我收到以下错误：
注意：未定义的索引：event_select in /homepages/5/d586424128/htdocs/wp-content/themes/NativeChurch/mail/contact.php 第13行
我无法理解为什么没有将select字段发送到$ _POST变量，并且我肯定有选择框中每个选项的值，因为我的select源代码如下所示：
<select id="event_select" name="event_select" class="form-control">
<option disabled="" selected="" value=""> -- select the event -- </option>
<option value="0">16th Feb - 23rd Feb</option>
<option value="1">27th Feb - 5th Mar</option>
<option value="2">20th Mar - 26th Mar</option>
<option value="3">20th Apr - 26th Apr</option>
<option value="4">8th May - 14th May</option>
<option value="5">15th Jun - 25th Jun</option>
<option value="6">7th Aug - 14th Aug</option>
<option value="7">20th Sep - 25th Sep</option>
<option value="8">16th Oct - 23rd Oct</option>
</select>
答案 0 :(得分：0)
经过一些挖掘后，似乎在我的表单上的类contact-form-native上触发了一些JavaScript。在搜索完所有主题文件后，我发现了以下代码：
NATIVE.ContactForm = function() {
$('.contact-form-native').each(function() {
var formInstance = $(this);
formInstance.submit(function() {
var action = $(this).attr('action');
$("#message").slideUp(750, function() {
$('#message').hide();
$('#submit')
.after('<img src="' + $('#image_path').val() + '/images/assets/ajax-loader.gif" class="loader" />')
.attr('disabled', 'disabled');
$.post(action, {
name: $('#name').val(),
email: $('#email').val(),
phone: $('#phone').val(),
comments: $('#comments').val(),
subject: $('#subject').val(),
admin_email: $('#admin_email').val()
},
function(data) {
document.getElementById('message').innerHTML = data;
$('#message').slideDown('slow');
$('.contact-form-native img.loader').fadeOut('slow', function() {
$(this).remove()
});
$('#submit').removeAttr('disabled');
if (data.match('success') != null)
$('.contact-form-native').slideUp('slow');
}
);
});
return false;
});
});
}
我只需要将event_select: $('#event_select').val(),添加到上面的帖子选项中，然后选择表单即可。所以实际上提交表单的是JavaScript。