时间:2021-07-01 10:21:17 帮助过:18人阅读
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//测试数组 $arr=array ( array('id'=>2,'name'=>'分类2','parent_id'=>1), array('id'=>9,'name'=>'分类9','parent_id'=>8), array('id'=>1,'name'=>'分类1','parent_id'=>0), array('id'=>7,'name'=>'分类7','parent_id'=>0), array('id'=>3,'name'=>'分类3','parent_id'=>2), array('id'=>4,'name'=>'分类4','parent_id'=>0), array('id'=>6,'name'=>'分类6','parent_id'=>5), array('id'=>8,'name'=>'分类8','parent_id'=>7), array('id'=>5,'name'=>'分类5','parent_id'=>4) ); /** * 已知子类id 得到父类树形结构 * @param [type] $data [要查询的数组] * @param [type] $id [子类id] * @param integer $level [缩进系数] * @param boolean $isClear [调用时为true,多次调用不相互叠加] * @return [type] [返回结果树形结构] */ function getParent($data,$id,$level=0,$is_Clear=false){ static $_rec = array(); if ($is_Clear == true) { $_rec = array(); } foreach ($data as $k=>$v) { if ( $v['id'] == $id) { $_rec[] =$v; // if ($v['parent_id'] != 0) { getParent($data,$v['parent_id']); // } } } $rec = array_reverse($_rec); for ($i=0; $i $rec[$i]['level']=$level; $level++; } //把自己拿出来,自己不属于父类 array_pop($rec); return $rec; } /** * 已知父类id找 得到子类树形结构 * @param [type] $data [要查询的数组] * @param [type] $id [父类id] * @param integer $level [缩进系数] * @param boolean $isClear [调用时为true,多次调用不相互叠加] * @return [type] [返回结果树形结构] */ function getChilds($data,$id,$level=0,$isClear=false){ static $rec = []; if ($isClear == true) { $rec =[]; } foreach ($data as $k => $v) { if ($v['parent_id'] == $id) { $v['level']=$level; $rec[] =$v; getChilds($data,$v['id'],++$level); } } return $rec; } /** * 已知父类id,得到子类id树形结构;区别在于$row[]=$v['id'],只赋值id; * getParent(),可改写成getParentid(); * @param [type] $data [description] * @param [type] $id [description] * @param boolean $col [description] * @return [type] [description] */ function getChildsId($data,$id,$col=false){ static $row=array(); if($col) $row=array(); foreach ($data as $k => $v) { if($v['parent_id'] ==$id){ $row[]=$v['id']; getChildsId($data,$v['id']); } } return $row; } /** * 已知父类id,得到树形结构; * 结合getParent(),若不弹出自己,即已知子类id,得到树形结构 * @param [type] $data [description] * @param [type] $parent_id [description] * @param integer $level [description] * @param boolean $col [description] * @return [type] [description] */ function tree($data,$parent_id,$level=0,$col=false){ static $res=array(); if($col) $res=array(); foreach ($data as $k => $v) { if($v['parent_id'] == $parent_id){ $v['level']=$level; $res[]=$v; tree($data,$v['id'],$level+1); } } return $res; }
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