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DB class for PHP
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| <?php | |
| /* | |
| * No database selected | |
| * Usage: | |
| $query = "SELECT 'testrow' FROM 'database_name'.'table'"; | |
| $result = DB::getInstance()->query($query); | |
| if($result->count() != 0){ | |
| foreach($result->results() as $row){ | |
| $testrow = $row->testrow; | |
| } | |
| } | |
| * Util: | |
| DB::getInstance()->lastInsertId() | |
| */ | |
| class DB{ | |
| private static $_instance = null; | |
| private $_pdo, | |
| $_query, | |
| $_error = false, | |
| $_results, | |
| $_lastid, | |
| $_count = 0; | |
| private function __construct(){ | |
| try { | |
| global $mysql; | |
| $this->_pdo = new PDO('mysql:host=' . $mysql['host'], $mysql['username'], $mysql['password']); | |
| } catch(PDOException $e){ | |
| //die($e->getMessage()); // Enable in case of error | |
| } | |
| } | |
| public static function getInstance(){ | |
| if(!isset(self::$_instance)){ | |
| self::$_instance = new DB(); | |
| } | |
| return self::$_instance; | |
| } | |
| public function query($sql, $params = array()){ | |
| $this->_error = false; | |
| if($this->_query = $this->_pdo->prepare($sql)){ | |
| $x = 1; | |
| if(count($params)){ | |
| foreach($params as $param){ | |
| $this->_query->bindValue($x, $param); | |
| $x++; | |
| } | |
| } | |
| if($this->_query->execute()){ | |
| $this->_results = $this->_query->fetchAll(PDO::FETCH_OBJ); | |
| $this->_count = $this->_query->rowCount(); | |
| $this->_lastid = $this->_pdo->lastInsertId(); | |
| } else { | |
| $this->_error = true; | |
| } | |
| //print_r($this->_query->errorInfo()); // Enable in case of error | |
| } | |
| return $this; | |
| } | |
| public function results(){ | |
| return $this->_results; | |
| } | |
| public function lastInsertId(){ | |
| return $this->_lastid; | |
| } | |
| public function error(){ | |
| return $this->_error; | |
| } | |
| public function count(){ | |
| return $this->_count; | |
| } | |
| } | |
| ?> |
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