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<?php |
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namespace Lepton\Core; |
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class Database |
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{ |
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protected $connection; |
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protected $query; |
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protected $show_errors = TRUE; |
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protected $query_closed = TRUE; |
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/** |
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* Database constructor. |
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* @param string $dbhost |
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* @param string $dbuser |
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* @param string $dbpass |
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* @param string $dbname |
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* @param string $charset |
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*/ |
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public function __construct($dbhost = 'localhost', $dbuser = 'root', $dbpass = '', $dbname = '', $charset = 'utf8') |
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{ |
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$this->connection = new \mysqli($dbhost, $dbuser, $dbpass, $dbname); |
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if ($this->connection->connect_error) { |
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$this->error('Failed to connect to MySQL - ' . $this->connection->connect_error); |
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} |
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$this->connection->set_charset($charset); |
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} |
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/* |
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* Execute an SQL query on the database |
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* @param string $query |
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* @param array $args |
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* @return array|bool |
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*/ |
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public function query($query, &...$args) |
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{ |
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if (!$this->query_closed) { |
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$this->query_closed = TRUE; |
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$this->query->close(); |
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} |
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if ($this->query = $this->connection->prepare($query)) { |
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if (count($args)) { |
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$types = implode(array_map(array($this, '_gettype'), $args)); |
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$this->query->bind_param($types, ...$args); |
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} |
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$this->query->execute(); |
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if ($this->query->errno) { |
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$this->error('Unable to process MySQL query (check your params) - ' . $this->query->error); |
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} |
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$this->query_closed = FALSE; |
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} else { |
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$this->error('Unable to prepare MySQL statement (check your syntax) - ' . $this->connection->error); |
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} |
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return $this; |
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} |
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public function fetch_all($callback = null) |
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{ |
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$params = array(); |
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$row = array(); |
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$meta = $this->query->result_metadata(); |
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while ($field = $meta->fetch_field()) { |
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$params[] = &$row[$field->name]; |
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} |
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$this->query->bind_result(...$params); |
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$result = array(); |
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while ($this->query->fetch()) { |
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$r = array(); |
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foreach ($row as $key => $val) { |
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$r[$key] = $val; |
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} |
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if ($callback != null && is_callable($callback)) { |
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$value = $callback($r); //call_user_func($callback, $r); |
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if ($value == 'break') break; |
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} else { |
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$result[] = $r; |
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} |
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} |
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$this->query_closed = TRUE; |
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return $result; |
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} |
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public function fetch_array() |
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{ |
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$params = array(); |
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$row = array(); |
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$meta = $this->query->result_metadata(); |
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while ($field = $meta->fetch_field()) { |
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$params[] = &$row[$field->name]; |
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} |
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$this->query->bind_result(...$params); |
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$result = array(); |
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while ($this->query->fetch()) { |
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foreach ($row as $key => $val) { |
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$result[$key] = $val; |
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} |
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} |
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return $result; |
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} |
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public function fetch_result() |
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{ |
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return $this->query->get_result(); |
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} |
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public function close() |
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{ |
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return $this->connection->close(); |
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} |
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public function num_rows() |
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{ |
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$this->query->store_result(); |
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return $this->query->num_rows; |
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} |
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public function affected_rows() |
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{ |
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return $this->query->affected_rows; |
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} |
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public function last_insert_id() |
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{ |
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return $this->connection->insert_id; |
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} |
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public function error($error) |
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{ |
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if ($this->show_errors) { |
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die($error); |
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} |
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} |
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private function _gettype($var) |
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{ |
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if (is_string($var)) return 's'; |
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if (is_float($var)) return 'd'; |
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if (is_int($var)) return 'i'; |
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if (is_null($var)) return 's'; |
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return 'b'; |
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} |
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} |
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ai-sf /
lepton
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