The PDO wrapper with comfortable API for placeholders

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Language: PHP

1.1.1 2015-04-08 11:59 UTC


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The PDO wrapper with comfortable API for placeholders


Flame requires php 5.4+ and PDO extension.

composer require nkt/flame:~1.0



use Flame\Connection;
use Flame\Grammar\MysqlGrammar;

$db = new Connection('mysql:dbname=hello_world', 'user', 'password', [], new MysqlGrammar());


Write placeholders types directly in the query

For example:

SELECT * FROM goods g WHERE g.price BETWEEN f:minPrice AND f:maxPrice;
SELECT * FROM users u WHERE u.username = s:username; -- :username also bind as string
SELECT * FROM orders o WHERE o.id = i:id;
SELECT * FROM users u WHERE u.registered >= d:date;

Difference between native PDO placeholders

Unlike PDO you can re-use the same placeholder as long as necessary. Also you have to specifying the type of the placeholder just once.

$users = $flame->prepare(
    'SELECT * FROM users WHERE age >= i:age OR (registered < d:registered AND age = :age)'
)->execute(['age' => $age]);

You don't need cast every integer values, Flame do it for you.

$stmt = $flame->prepare('SELECT * FROM users WHERE id = i:id)');
$users = $stmt->execute(['id' => $_POST['id']]);

Every query execution Flame tests value is null and if it is, change placeholder type to PDO::PARAM_NULL.

$stmt = $flame->prepare('INSERT INTO users VALUES(s:username, d:last_login))');
$users = $stmt->execute(['username' => 'John Doe', 'last_login' => null]);

Flame add new types: date and time. You can bind this data as DateTime, string or int.

Placeholder types

Placeholder Type
s string
i integer
f float
b boolean
l blob
d datetime
t time

Query builder

Flame also provide powerful query builder. Connection provide base wrappers:

  • Connection::select(string $column...)
  • Connection::update(string $table, array $columns)
  • Connection::insert(string $table, array $columns)

Every sql statement provides by method with same name in camelCase.


$posts = $db->prepare(
    $db->select('p.id', 'p.title', 'p.content')
       ->from('posts p')
       ->join('post_tags pt', 'p.id', 'pt.post_id')
       ->join('tags t', 't.id', 'pt.tag_id')
       ->where(function ($e) {
           $e->equal('t.name', ':tag');
)->execute(['tag' => $tag]);

$db->prepare($db->insert('users', [
        'username'   => ':name',
        'password'   => ':pass',
        'registered' => 'd:now'
        'name' => $name,
        'pass' => $pass,
        'now'  => new \DateTime()