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PHP Using PHP with MySQL Querying the Database with PHP Working with Query Results

Posted by Sergey Mikhailovsky
Sergey Mikhailovsky
23,944 Points

I have several problems with connection database shirts4mike over php

The first is already solved by adding a string 'USE shirts4mike;' to the quering string:

$results = $db->query(" USE shirts4mike; SELECT name, price FROM products ORDER BY sku asc" ); And quastion is: How to initialize this database in php and why in the code of Randy Hoyt it absent? The second, I have Exception error while using fetchAll() function:

<?php

try { $db = new PDO("mysql:localhost;dbname=shirts4mike;port=3306","root","root"); $db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION); $db->exec("SET NAMES 'utf8'"); } catch (Exeption $e){ echo "Could not connect to the database."; exit; }

try { $results = $db->query(" USE shirts4mike; SELECT name, price FROM products ORDER BY sku asc" ); echo "Our query ran successfully."; } catch (Exception $e) { echo "Data can not be retrieved from the database."; }

echo "<pre>"; var_dump($results -> fetchAll()); ?>

What is wrong with my code?

Output:

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error' in C:\xampp\htdocs\database.php:26 Stack trace:

0 C:\xampp\htdocs\database.php(26): PDOStatement->fetchAll()

2 Answers

Lars Nielsen
Lars Nielsen
2,451 Points

I think you're just missing host before localhost.

<?php

try {
  $db = new PDO("mysql:host=localhost;dbname=shirts4mike;port=3306","root","root");
  $db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
  $db->exec("SET NAMES 'utf8'");
} catch (Exeption $e){
  echo "Could not connect to the database."; exit;
}

try {
  $results = $db->query(" USE shirts4mike; SELECT name, price FROM products ORDER BY sku asc" );
  echo "Our query ran successfully.";
} catch (Exception $e) {
  echo "Data can not be retrieved from the database.";
}

echo ""; var_dump($results -> fetchAll());

?>

Take a look here: https://teamtreehouse.com/forum/my-script-has-an-error

Sergey Mikhailovsky
Sergey Mikhailovsky
23,944 Points
Sergey Mikhailovsky
Sergey Mikhailovsky
23,944 Points

That's right, I've missed this one, haha. Thanks a lot.