| <?php␍␊ |
| /**␍␊ |
| * Provides a database wrapper around the PDO service to help reduce the effort␍␊ |
| * to interact with a RDBMS such as SQLite, MySQL, or PostgreSQL.␍␊ |
| *␍␊ |
| * ␉DB::$c = new PDO($dsn);␍␊ |
| *␍␊ |
| * @author␉David Pennington␍␊ |
| * @copyright␉(c) 2012 xeoncross.com␍␊ |
| * @license␉MIT License <http://www.opensource.org/licenses/mit-license.php>␍␊ |
| ********************************** 80 Columns *********************************␍␊ |
| */␍␊ |
| class DB␍␊ |
| {␍␊ |
| ␉static $q,$c,$p,$i = '`';␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Fetch a column offset from the result set (COUNT() queries)␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $query query string␍␊ |
| ␉ * @param array $params query parameters␍␊ |
| ␉ * @param integer $key index of column offset␍␊ |
| ␉ * @return array|null␍␊ |
| ␉ */␍␊ |
| ␉static function column($query, $params = NULL, $key = 0)␍␊ |
| ␉{␍␊ |
| ␉␉if($statement = DB::query($query, $params))␍␊ |
| ␉␉␉return $statement->fetchColumn($key);␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Fetch a single query result row␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $query query string␍␊ |
| ␉ * @param array $params query parameters␍␊ |
| ␉ * @return mixed␍␊ |
| ␉ */␍␊ |
| ␉static function row($query, $params = NULL)␍␊ |
| ␉{␍␊ |
| ␉␉if($statement = DB::query($query, $params))␍␊ |
| ␉␉␉return $statement->fetch();␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Fetches an associative array of all rows as key-value pairs (first␍␊ |
| ␉ * column is the key, second column is the value).␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $query query string␍␊ |
| ␉ * @param array $params query parameters␍␊ |
| ␉ * @return array␍␊ |
| ␉ */␍␊ |
| ␉static function pairs($query, $params = NULL)␍␊ |
| ␉{␍␊ |
| ␉␉$data = array();␍␊ |
| ␍␊ |
| ␉␉if($statement = DB::query($query, $params))␍␊ |
| ␉␉␉while($row = $statement->fetch(\PDO::FETCH_NUM))␍␊ |
| ␉␉␉␉$data[$row[0]] = $row[1];␍␊ |
| ␍␊ |
| ␉␉return $data;␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Fetch all query result rows␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $query query string␍␊ |
| ␉ * @param array $params query parameters␍␊ |
| ␉ * @param int $column the optional column to return␍␊ |
| ␉ * @return array␍␊ |
| ␉ */␍␊ |
| ␉static function fetch($query, $params = NULL, $column = NULL)␍␊ |
| ␉{␍␊ |
| ␉␉if( ! $statement = DB::query($query, $params)) return;␍␊ |
| ␍␊ |
| ␉␉// Return an array of records␍␊ |
| ␉␉if($column === NULL) return $statement->fetchAll();␍␊ |
| ␍␊ |
| ␉␉// Fetch a certain column from all rows␍␊ |
| ␉␉return $statement->fetchAll(\PDO::FETCH_COLUMN, $column);␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Prepare and send a query returning the PDOStatement␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $query query string␍␊ |
| ␉ * @param array $params query parameters␍␊ |
| ␉ * @return object|null␍␊ |
| ␉ */␍␊ |
| ␉static function query($query, $params = NULL)␍␊ |
| ␉{␍␊ |
| ␉␉$statement = static::$c->prepare(DB::$q[] = strtr($query, '`', DB::$i));␍␊ |
| ␉␉$statement->execute($params);␍␊ |
| ␉␉return $statement;␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Insert a row into the database␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $table name␍␊ |
| ␉ * @param array $data␍␊ |
| ␉ * @return integer|null␍␊ |
| ␉ */␍␊ |
| ␉static function insert($table, array $data)␍␊ |
| ␉{␍␊ |
| ␉␉$query = "INSERT INTO`$table`(`" . implode('`,`', array_keys($data))␍␊ |
| ␉␉␉. '`)VALUES(' . rtrim(str_repeat('?,', count($data = array_values($data))), ',') . ')';␍␊ |
| ␉␉return DB::$p␍␊ |
| ␉␉␉? DB::column($query . 'RETURNING`id`', $data)␍␊ |
| ␉␉␉: (DB::query($query, $data) ? static::$c->lastInsertId() : NULL);␍␊ |
| ␉}␍␊ |
| ␍␊ |
| ␉/**␍␊ |
| ␉ * Update a database row␍␊ |
| ␉ *␍␊ |
| ␉ * @param string $table name␍␊ |
| ␉ * @param array $data␍␊ |
| ␉ * @param array $w where conditions␍␊ |
| ␉ * @return integer|null␍␊ |
| ␉ */␍␊ |
| ␉static function update($table, $data, $value, $column = 'id')␍␊ |
| ␉{␍␊ |
| ␉␉$keys = implode('`=?,`', array_keys($data));␍␊ |
| ␉␉if($statement = DB::query(␍␊ |
| ␉␉␉"UPDATE`$table`SET`$keys`=? WHERE`$column`=?",␍␊ |
| ␉␉␉array_values($data + array($value))␍␊ |
| ␉␉))␍␊ |
| ␉␉␉return $statement->rowCount();␍␊ |
| ␉}␍␊ |
| } |
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