php - Conditional does not seem to be working in Controller -


my goal to, upon clicking button, redirect practice_test_view main controller's function setuptask, passing in variable $test_id. part seems work. however, once function called, no matter test_id variable is, seems running through main else clause, because calls getkey function model, when should not. causes following errors appear in browser tools:

<p>severity: notice</p> <p>message:  undefined variable: test_name</p> <p>filename: models/main_model.php</p> <p>line number: 45</p>  <p>severity: warning</p> <p>message:  file_get_contents(files/_key.json): failed open stream: no such file or directory</p> <p>filename: models/main_model.php</p> <p>line number: 45</p>

practice_test_view (relevant portion):

<div style='position: relative; width: 595px; margin: 20px auto;'>     <input style='text-align:center; width:220px;' type="button" id='rounded' value="click here begin test" onclick="location.href='<?php echo site_url("main/setuptask/". "/" . "$test_id"); ?>'";> </div>

my main controller function:

public function setuptask($test_id){      $this->load->model('main_model');      if($test_id == 5 || $test_id == 6){         $random_array = $this->main_model->createrandomarray();          shuffle($random_array);          if($test_id == 6){             $test_key = $this->main_model->createspatialkey($random_array);             $data['test_key'] = $test_key;             $data['test_id'] = $test_id;         }         else{             $data['test_key'] = $random_array;             $data['test_id'] = $test_id;         }         $this->load->view('test_view', $data);     }     else{         $json_key = $this->main_model->getkey($test_id);         $json_key = json_decode($json_key, true);         shuffle($json_key);          $data['test_key'] = $json_key;         $data['test_id'] = $test_id;          $this->load->view('test_view', $data);     } }

my main model:

class main_model extends ci_model{     public function getkey($test_id){          switch($test_id){           case 1:             $test_name = "example";             break;           case 2:             $test_name = "example";             break;           case 3:             $test_name = "example";             break;         }          $image_array = file_get_contents('files/' . $test_name . '_key.json');          return $image_array;      }      public function createrandomarray(){       $verbal_array = array();        for($i=0; $i<60; $i++){         $random = mt_rand(1,4);         $random_array[$i] = $random;       }        return $random_array;     }    public function createspatialkey($random_array){      $test = array();     $image_array = file_get_contents('files/spatial_working_memory_key.json');      $image_array = json_decode($image_array, true);      foreach($random_array $question){       $q = $question - 1;       array_push($test, $image_array[$q]);     }       return $test;   } }

in switch statement in model, i've replaced actual test names 'example' , have shortened because rest of statement organized partial shown.

any appreciated!

in view change

<?php echo site_url("main/setuptask/". "/" . "$test_id"); ?>

to

<?php echo base_url("main/setuptask/". $test_id); ?>

make following changes getkey() function

public function getkey($test_id){      switch($test_id){       case 1:         $test_name = "example";         break;       case 2:         $test_name = "example";         break;       case 3:         $test_name = "example";         break;       default:         $test_name = '';         break;     }      if($test_name !== ''){          $image_array = file_get_contents('files/' . $test_name . '_key.json');          return $image_array;      } else {          return false;      }   }

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