recursion - php category recursive hierarchy -

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i have category hierarchy this.

  • 721 parent 235
  • 235 parent 201
  • 201 parent 1
  • 1 parent 0

0 root category id, trying build function input leaf id 721, full path id of 721, 235, 201, 1

public function getpath($inputid = 0, $idlist=array()) {            $sql ="select * hierarchy id='{$inputid}'";     $result = $this->db->fetchall($sql);      if($result){         $currentid = $result[0]["id"];         $parentid = $result[0]["parent_id"];          $idlist[] = $currentid;          if ($parentid !=0){            $this->getpath($parentid, $idlist);         }else{             //var_dump($idlist);             return $idlist;         }     }  }

i can see correct results in var_dump part above, when use function class, return null, $data = $whatevehelper->getpath('721');

could help?

thanks

you need change this:

if ($parentid !=0){     $this->getpath($parentid, $idlist); }

to this:

if ($parentid !=0){     return $this->getpath($parentid, $idlist); }

then need remove else clause , move "return $idlist;" line bottom of function returned. code above return $idlist in event $parentid 0. however, need function return if calling recursively.

i recommend along these lines whole function:

public function getpath($inputid = 0, $idlist=array()) {            $sql ="select * hierarchy id='{$inputid}'";     $result = $this->db->fetchall($sql);      if($result){         $currentid = $result[0]["id"];         $parentid = $result[0]["parent_id"];          $idlist[] = $currentid;          if ($parentid !=0){            return $this->getpath($parentid, $idlist);         }     }     return $idlist; }

let me know if works you.


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