编辑：
我不知道如何在数组中存储多个选择，只保存第一个值。
img链接->http://oi62.tinypic.com/20p58cl.jpg
有人能帮我吗？
@谢谢你的帮助，但没有用。
请看一下这个代码。顺致敬意，
<?php
/*
Plugin Name: EXAMPLE repeatable-fields
*/
add_action('admin_init', 'add_meta_boxes', 1);
function add_meta_boxes() {
add_meta_box( 'repeatable-fields', 'EXAMPLE', 'repeatable_meta_box_display', 'post', 'normal', 'high');
}
function repeatable_meta_box_display() {
global $post;
$repeatable_fields = get_post_meta($post->ID, 'repeatable_fields', true);
$item_array = array('A','B','C','D');
wp_nonce_field( 'repeatable_meta_box_nonce', 'repeatable_meta_box_nonce' );
?>
<script type="text/javascript">
jQuery(document).ready(function($) {
$('.metabox_submit').click(function(e) {
e.preventDefault();
$('#publish').click();
});
$('#add-row').on('click', function() {
var row = $('.empty-row.screen-reader-text').clone(true);
row.removeClass('empty-row screen-reader-text');
row.insertBefore('#repeatable-fieldset-one tbody>tr:last');
return false;
});
$('.remove-row').on('click', function() {
$(this).parents('tr').remove();
return false;
});
$('#repeatable-fieldset-one tbody').sortable({
opacity: 0.6,
revert: true,
cursor: 'move',
handle: '.sort'
});
});
</script>
<table id="repeatable-fieldset-one" width="100%">
<thead>
<tr>
<th width="2%"></th>
<th width="60%">Name</th>
<th width="60%">Surname</th>
<th width="10%">Item</th>
<th width="2%"></th>
</tr>
</thead>
<tbody>
<?php
if ( $repeatable_fields ) :
foreach ( $repeatable_fields as $field ) {
?>
<tr>
<td><a class="button remove-row" href="#">-</a></td>
<td><input type="text" class="widefat" name="name[]" value="<?php if($field['name'] != '') echo esc_attr( $field['name'] ); ?>" /></td>
<td><input type="text" class="widefat" name="surname[]" value="<?php if ($field['surname'] != '') echo esc_attr( $field['surname'] ); else echo ''; ?>" />
</td>
<td>
<?php
echo '
<select name="item[]" multiple>';
foreach ( $item_array as $label => $value ) :
echo '<option value="'.$value.'" '.selected( $field['item'], $value,true ).'>'.$value.'</option>';
endforeach;
echo '</select>';
?>
</td>
<td><a class="sort">|||</a></td>
</tr>
<?php
}
else :
// show a blank one
?>
<tr>
<td><a class="button remove-row" href="#">-</a></td>
<td><input type="text" class="widefat" name="name[]" /></td>
<td><input type="text" class="widefat" name="surname[]" value="" /></td>
<td>
<?php
echo '
<select name="item[]" multiple>';
foreach ( $item_array as $label => $value ) :
echo '<option value="'.$value.'" '.selected( $field['item'], $value,true ).'>'.$value.'</option>';
endforeach;
echo '</select>';
?>
</td>
<td><a class="sort">|||</a></td>
</tr>
<?php endif; ?>
<!-- empty hidden one for jQuery -->
<tr class="empty-row screen-reader-text">
<td><a class="button remove-row" href="#">-</a></td>
<td><input type="text" class="widefat" name="name[]" /></td>
<td><input type="text" class="widefat" name="surname[]" value="" /> </td>
<td>
<?php
echo '
<select name="item[]" multiple>';
foreach ( $item_array as $label => $value ) :
echo '<option value="'.$value.'" '.selected( $field['item'], $value,true ).'>'.$value.'</option>';
endforeach;
echo '</select>';
?>
</td>
<td><a class="sort">|||</a></td>
</tr>
</tbody>
</table>
<p><a id="add-row" class="button" href="#">Add another</a>
<input type="submit" class="metabox_submit" value="Save" />
</p>
<?php
}
add_action('save_post', 'repeatable_meta_box_save');
function repeatable_meta_box_save($post_id) {
if ( ! isset( $_POST['repeatable_meta_box_nonce'] ) ||
! wp_verify_nonce( $_POST['repeatable_meta_box_nonce'], 'repeatable_meta_box_nonce' ) )
return;
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE)
return;
if (!current_user_can('edit_post', $post_id))
return;
$old = get_post_meta($post_id, 'repeatable_fields', true);
$new = array();
$names = $_POST['name'];
$surnames = $_POST['surname'];
$items = $_POST['item'];
$count = count( $names );
for ( $i = 0; $i < $count; $i++ ) {
if ( $names[$i] != '' ) :
$new[$i]['name'] = stripslashes( strip_tags( $names[$i] ) );
$new[$i]['surname'] = stripslashes( $surnames[$i] );
$new[$i]['item'] = stripslashes( strip_tags( $items[$i] ) );
endif;
}
if ( !empty( $new ) && $new != $old )
update_post_meta( $post_id, 'repeatable_fields', $new );
elseif ( empty($new) && $old )
delete_post_meta( $post_id, 'repeatable_fields', $old ); }
?>
我认为应该为输入数据添加一个索引。我制作了一个示例php页面，其中包含两个包含相同输入类型的块
<html>
<head></head>
<body>
<h1>POST VALUES</h1>
<pre><?php print_r($_POST); ?></pre>
<h1>SAMPLE FORM</h1>
<form method="POST">
<h2>first block</h2>
first name 1<input name="first_name[1]" />
<br />last name 1<input name="last_name[1]" />
<br /><select name="item[1][]" multiple>
<option value="1">primo</option>
<option value="2">secondo</option>
</select>
<h2>second block</h2>
first name 2<input name="first_name[2]" />
<br />last name 2<input name="last_name[2]" />
<br /><select name="item[2][]" multiple>
<option value="1">primo</option>
<option value="2">secondo</option>
</select>
<br /><input type="submit" value="submit">
</form>
</body>
</html>
以这种方式，当您提交您在$_POST 中的数据时
Array
(
[first_name] => Array
(
[1] => name 1
[2] => name 2
)
[last_name] => Array
(
[1] => last name 1
[2] => last name 2
)
[item] => Array
(
[1] => Array
(
[0] => 1
[1] => 2
)
[2] => Array
(
[0] => 2
[1] => 3
)
)
)
当你打印你的方框应该很简单添加一个索引到输入数据。类似的东西
$index = 0;
foreach ($informations as $field):
$index++;
echo '<input name="name['.$index.'][]" value="'. esc_attr($field['name']) .'" />';
echo '<input name="surname['.$index.'][]" value="'. esc_attr($field['surname']) .'" />';
....
希望这能有所帮助！