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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

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__));