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<?php |
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/** |
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* @package CleverStyle Framework |
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* @author Nazar Mokrynskyi <[email protected]> |
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* @copyright Copyright (c) 2011-2016, Nazar Mokrynskyi |
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* @license MIT License, see license.txt |
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*/ |
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namespace cs\DB; |
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use |
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mysqli_result; |
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class MySQLi extends _Abstract { |
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/** |
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* @var \MySQLi Instance of DB connection |
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*/ |
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protected $instance; |
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/** |
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* @inheritdoc |
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*/ |
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public function __construct ($database, $user = '', $password = '', $host = 'localhost', $prefix = '') { |
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$start = microtime(true); |
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/** |
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* Parsing of $host variable, detecting port and persistent connection |
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*/ |
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list($host, $port) = $this->get_host_and_port($host); |
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$this->instance = new \MySQLi($host, $user, $password, $database, $port); |
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if (!is_object($this->instance) || $this->instance->connect_errno) { |
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return; |
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} |
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$this->database = $database; |
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/** |
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* Changing DB charset if necessary |
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*/ |
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if ($this->instance->character_set_name() != 'utf8mb4') { |
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$this->instance->set_charset('utf8mb4'); |
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} |
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$this->connected = true; |
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$this->connecting_time = microtime(true) - $start; |
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$this->db_type = 'mysql'; |
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$this->prefix = $prefix; |
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} |
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/** |
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* Parse host string into host and port separately |
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* |
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* Understands `p:` prefix for persistent connections |
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* |
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* @param string $host_string |
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* |
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* @return array |
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*/ |
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protected function get_host_and_port ($host_string) { |
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$host = explode(':', $host_string); |
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$port = ini_get('mysqli.default_port') ?: 3306; |
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switch (count($host)) { |
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case 1: |
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$host = $host[0]; |
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break; |
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case 2: |
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if ($host[0] == 'p') { |
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$host = "$host[0]:$host[1]"; |
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} else { |
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list($host, $port) = $host; |
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} |
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break; |
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case 3: |
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$port = $host[2]; |
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$host = "$host[0]:$host[1]"; |
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} |
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return [$host, $port]; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @return false|mysqli_result |
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*/ |
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protected function q_internal ($query, $parameters = []) { |
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if (!$query) { |
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return false; |
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} |
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for ($i = 0; $i < 2; ++$i) { |
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if ($parameters) { |
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$stmt = $this->instance->prepare($query); |
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// Allows to provide more parameters for prepared statements than needed |
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$local_parameters = array_slice($parameters, 0, substr_count($query, '?')); |
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$stmt->bind_param( |
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str_repeat('s', count($local_parameters)), |
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...$local_parameters |
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); |
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$stmt->execute(); |
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$result = $stmt->get_result(); |
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} else { |
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$result = $this->instance->query($query); |
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} |
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// In case of MySQL Client error - try to fix everything, but only once |
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if ( |
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$result || |
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$this->instance->errno < 2000 || |
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!$this->instance->ping() |
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) { |
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break; |
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} |
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} |
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/** @noinspection PhpUndefinedVariableInspection */ |
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return $result; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @param false|mysqli_result $query_result |
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*/ |
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public function f ($query_result, $single_column = false, $array = false, $indexed = false) { |
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if (!($query_result instanceof mysqli_result)) { |
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return false; |
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} |
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$result_type = $single_column || $indexed ? MYSQLI_NUM : MYSQLI_ASSOC; |
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if ($array) { |
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$result = []; |
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while ($current = $query_result->fetch_array($result_type)) { |
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$result[] = $single_column ? $current[0] : $current; |
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} |
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$this->free($query_result); |
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return $result; |
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} |
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$result = $query_result->fetch_array($result_type); |
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if ($result === null) { |
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$result = false; |
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} |
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return $single_column && $result ? $result[0] : $result; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function id () { |
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return $this->instance->insert_id; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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1 |
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public function affected () { |
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return $this->instance->affected_rows; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @param false|mysqli_result $query_result |
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*/ |
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public function free ($query_result) { |
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if ($query_result instanceof mysqli_result) { |
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$query_result->free(); |
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} |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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2 |
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public function columns ($table, $like = false) { |
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if (!$table) { |
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return false; |
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} |
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2 |
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if ($like) { |
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1 |
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$like = $this->s($like); |
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$columns = $this->qfas("SHOW COLUMNS FROM `$table` LIKE $like") ?: []; |
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} else { |
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$columns = $this->qfas("SHOW COLUMNS FROM `$table`") ?: []; |
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} |
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return $columns; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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1 |
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public function tables ($like = false) { |
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1 |
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if ($like) { |
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1 |
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$like = $this->s($like); |
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return $this->qfas("SHOW TABLES FROM `$this->database` LIKE $like") ?: []; |
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} else { |
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return $this->qfas("SHOW TABLES FROM `$this->database`") ?: []; |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function s_internal ($string, $single_quotes_around) { |
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$return = $this->instance->real_escape_string($string); |
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return $single_quotes_around ? "'$return'" : $return; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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1 |
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public function server () { |
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1 |
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return $this->instance->server_info; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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2 |
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public function __destruct () { |
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2 |
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if ($this->connected && is_object($this->instance)) { |
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2 |
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$this->instance->close(); |
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2 |
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$this->connected = false; |
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} |
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2 |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
