使用<optgroup>在组相关选项中的Foreach循环
使用<optgroup>在组相关选项中的Foreach循环
提问于 2018-12-05 11:24:45
我有一个数组
$this->getprevioussprint = Array( =>阵列( release_name => Relese1 sprint_name => Sprint1 sprint_id => 1)
[1] => Array
(
[release_name] => Relese1
[sprint_name] => Sprint2
[sprint_id] => 2
)
[2] => Array
(
[release_name] => v2
[sprint_name] => Sprint1
[sprint_id] => 3
))
我在一个与组相关的选项中有一个Foreach循环，所以我尝试了
<select class="col-md-2">
<?php foreach ($this->getprevioussprint as $key =>$pSprint):
$prev=$pSprint['release_name'];
?>
<optgroup label="<?php echo $pSprint['release_name'] ; ?>">
<option value=""><?php echo $pSprint['sprint_name'] ?></option>
</optgroup>
</select>但我得到了产出
<select>
<optgroup label="release_name">
<option value="1">Sprint1</option>
</optgroup>
<optgroup label="Relese1">
<option value="2">Sprint2</option>
</optgroup>
<optgroup label="V2">
<option value="3">Sprint1</option>
</optgroup>
</select>预期产出
<select>
<optgroup label="Relese1">
<option value="1">Sprint1</option>
<option value="2">Sprint2</option>
</optgroup>
<optgroup label="v2">
<option value="3">sprint1</option>
</optgroup>
</select>任何帮助都将不胜感激。
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-12-05 11:31:47
首先，您需要分组数组。在一个数组中插入相同release_name的平均数组。所以用吧
$newArr = [];
foreach ($_this->getprevioussprint as $item){
$newArr[$item['release_name']][] = $item;
}然后循环通过新的数组
<select class="col-md-2">
<?php foreach ($newArr as $key=>$item): ?>
<optgroup label="<?= $key ?>">
<?php foreach ($item as $key=>$pSprint): ?>
<option value=""><?= $pSprint['sprint_name'] ?></option>
<?php endforeach ?>
</optgroup>
<?php endforeach ?>
</select>Stack Overflow用户
发布于 2018-12-05 12:04:14
首先，您需要用它们的发布名对数组进行分组：
echo '<select class="col-md-2">';
foreach (group_by_release_name($this->getprevioussprint) as $key => $val):
echo '<optgroup label="'.$key.'">';
foreach($val as $k => $v):
echo '<option value="'.$v['sprint_id'].'">'.$v['sprint_name'].'</option>';
endforeach;
echo '</optgroup>';
endforeach;
echo '</select>';
function group_by_release_name($arr){
$result = [];
$current_release_name = '';
foreach($arr as $k => $v){
$current_release_name = $v['release_name'];
unset($v['release_name']);
$result[$current_release_name][] = $v;
}
return $result;
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53631208
复制相关文章
相似问题
腾讯云开发者
