php - Class / Function not returning column data -

i have class manage users , working fine until had add more columns table , modify 2 names. 1 of modified names, function returns column content not working, colum fill data it's not printing when call function.

i rechecked many times code, looking bad typed name or something, seems fine, can't find problem...

this class:

require_once('aet.php');  class staff {      private $aet;      private $not_working_column;     private $working_column;      public function __construct() {         $this->aet = new aet();     }      private function generate($staff) {         $this->not_working_column   = $staff->not_working_column;         $this->working_column       = $staff->working_column;     }      private function addinformation($stmt) {         $i = 0;         $stmt->bind_result($not_working_column, $working_column);          while ($stmt->fetch()) {             $arraystaff[$i] = new staff();             $arraystaff[$i]->setnotworkingcolum($not_working_column);             $arraystaff[$i]->setworkingcolumn($working_column);             $i++;         }     }      public function stafffromemail($email) {         $mysqli = $this->aet->getaetsql();          if ($stmt = $mysqli->prepare("select * staff email = ? limit 1")) {             $stmt->bind_param('s', $email);             $stmt->execute();             $stmt->store_result();              if ($stmt->num_rows == 0) {                 $exit = false;             }             else {                 $arraystaff = $this->addinformation($stmt);                 $this->generate($arraystaff[0]);                 $exit = true;             }         }          return $exit;     }      public function setnotworkingcolum($not_working_column) {         $this->not_working_column = $not_working_column;     }      public function getnotworkingcolum() {         return $this->not_working_column;     }      public function setworkingcolumn($working_column) {         $this->working_column = $working_column;     }      public function getworkingcolumn() {         return $this->working_column;     }  } 

and in form users can update info

<div class="item">     <div class="input">         <input type="text" placeholder="" name="staff_info[]" value="<?php echo $staff->getnotworkingcolum(); ?>" />     </div> </div> <div class="item">     <div class="input">         <input type="text" placeholder="" name="staff_info[]" value="<?php echo $staff->getworkingcolumn(); ?>" />     </div> </div> 

i've made video https://www.youtube.com/watch?v=9s_uw7ik_xy

my fault, while changing name of column missed one:

public function setpersonalphone($personal_phone) {     $this->phone = $personal_phone; } 

should be:

public function setpersonalphone($personal_phone) {     $this->personal_phone = $personal_phone; }