Php 拉拉维尔:与无尽的孩子们一起构建树结构
嘿,我正试图和拉威尔一起建立一个有无数孩子的树型结构 这是我用来构建树的:Php 拉拉维尔:与无尽的孩子们一起构建树结构,php,laravel,laravel-5,Php,Laravel,Laravel 5,嘿,我正试图和拉威尔一起建立一个有无数孩子的树型结构 这是我用来构建树的: $result = ''; foreach($categories as $root) { $result .= sprintf(' <tr> <td> <div class="radio"> <label>
$result = '';
foreach($categories as $root) {
$result .= sprintf('
<tr>
<td>
<div class="radio">
<label>
<input type="radio" name="parent_id" id="" value="%d">
%s
</label>
</div>
</td>
</tr>', $root->id, $root->title
);
if(isset($root->children)) {
$this->getChildren($root->children, $result);
}
}
dd($result);
$result='';
foreach($root形式的类别){
$result.=sprintf('
%
“,$root->id,$root->title
);
如果(isset($root->children)){
$this->getChildren($root->children,$result);
}
}
dd(结果);
正如你所看到的,我指的是我的方法中的另一个方法。
那个看起来像这样:
public function getChildren($children, $result)
{
foreach($children as $child) {
$result .= sprintf('
<tr>
<td>
<div class="radio">
<label>
<input type="radio" name="parent_id" id="" value="%d">
%s
</label>
</div>
</td>
</tr>', $child->id, $child->title
);
if(isset($child->children)) {
$this->getChildren($child->children, $result);
}
}
return $result;
}
公共函数getChildren($children,$result)
{
foreach($childrenas$child){
$result.=sprintf('
%
“,$child->id,$child->title
);
如果(isset($child->children)){
$this->getChildren($child->children,$result);
}
}
返回$result;
}
然而,这只是返回我的主要结果
如何将数据一直附加到$result变量
提前谢谢 将函数声明更改为:
public function getChildren($children, &$result)
&
符号表示通过引用传递变量。无需重复代码,只需:
$result = $this->getChildren($categories);
dd($result);
及
公共函数getChildren($children)
{
$result='';
foreach($childrenas$child){
$result.=sprintf('
%
“,$child->id,$child->title
);
如果(isset($child->children)){
$result.=$this->getChildren($child->children);
}
}
返回$result;
}
public function getChildren($children)
{
$result = '';
foreach($children as $child) {
$result .= sprintf('
<tr>
<td>
<div class="radio">
<label>
<input type="radio" name="parent_id" id="" value="%d">
%s
</label>
</div>
</td>
</tr>', $child->id, $child->title
);
if(isset($child->children)) {
$result .= $this->getChildren($child->children);
}
}
return $result;
}