Question

I’m am unsure on how to move part of my code into a class.

 <?php
 class InfoTest {

      private $info_results;

      public function __construct() {
           $dbc = get_dbc();
           $info = $dbc->query ("SELECT info_id, info_title FROM text");
           if ($dbc->error) {
                printf("Error: %s\n", $dbc->error);
           }       
           while ($info_row = $info->fetch_array())
           {
                $info_results[]= $info_row;
           }
           $info->free();
           $this->info_results = $info_results;
      }


      public function setInfo() {
           $this->info_results = $info_results;
      }

      public function getInfo() { 
           return $this->info_results;
      }

      public function __destruct() {    
      }

 }

  ?>
 <?php
 $display = new InfoTest();
 foreach ($display->getInfo() as $info_row) {
 ?>
 <!-- html -->
 <?php echo $info_row['info_title']."</a><br />"; ?>  
 <!-- html -->
 Sub-Info: 
 <?php 
 $dbc = get_dbc(); 
 $si_title = $dbc->query ("SELECT info_title FROM text WHERE info_id = ".$info_row['info_id']."");
 if ($dbc->error) {
      printf("Error: %s\n", $dbc->error);
 }
 $num =$si_title->num_rows;
 $count = 0;
 while ($sub_info = $si_title->fetch_array())
 {
      $sub_info_title = $sub_info['info_title'];
      if ($count!=$num-1)
      {
           echo $sub_info_title." , ";
           $count++;
      }
      else echo $sub_info_title;                    
  }                  
 ?>
 <!-- html -->
 <?php } ?>

I’m unsure how to move the Sub-Info(code after Sub-Info:) into a class. Does it go in the same class as InfoTest, a class of its own, or doesn’t go into a class at all?

Sub-Info Code:

 <?php 
 $dbc = get_dbc(); 
 $si_title = $dbc->query ("SELECT info_title FROM text WHERE info_id = ".$info_row['info_id']."");
 if ($dbc->error) {
      printf("Error: %s\n", $dbc->error);
 }
 $num =$si_title->num_rows;
 $count = 0;
 while ($sub_info = $si_title->fetch_array())
 {
      $sub_info_title = $sub_info['info_title'];
      if ($count!=$num-1)
      {
           echo $sub_info_title." , ";
           $count++;
      }
      else echo $sub_info_title;                    
 }                   
 ?>

Answer 1

In your class you have already all information. So an alternative to a sql-query could be an additional method, which searches all titles with a special id in the private field info_results. E.g.:

public function getInfoTitles($info_id) {
    $titles = array();
    foreach ($this->info_results as $info_row) {
        if ($info_row['info_id'] == $info_id)
            $titles[] = $info_row['info_title'];
        }
    }
    return $titles;
}

Your Sub-Info Code is then:

echo implode(', ', $display->getInfoTitles($info_row['info_id']));