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PHP Designing Interfaces in PHP Introducing Interfaces Implement MySQL RepositoryInterface

Kyle Peterson
PLUS
Kyle Peterson
Courses Plus Student 2,118 Points
Posted by Kyle Peterson
Kyle Peterson
Courses Plus Student 2,118 Points

Can't create parameterized query.

The code I have commented out causes a fatal error. However, if I enter the table name directly instead of passing it, the code executes and displays all the information in the posts table. But when I check my work it says its incorrect and leaves an unhelpful hint...

"Bummer: Argument 1 passed to enroll() must be an instance of Student, string given</span></pre>"

sqlRepository.php 
<?php

class sqlRepository extends PDO implements RepositoryInterface
{
  public function __construct($dsn)
  {
    try {
      parent::__construct($dsn);
      //echo 'it worked';
    } catch (\PDOException $e) {
      echo $e->getMessage();
    }
  }
  public function all($table)
  {
    // $stmt = $this->prepare('SELECT * FROM ?');
    // $stmt->bindValue(1, $table);
    // $stmt->execute();
    $stmt = $this->query("SELECT * FROM posts");
    $results = $stmt->fetchAll(PDO::FETCH_OBJ);
    var_dump($results);
    return $results;
  }

}
//var_dump(scandir(__DIR__));