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Db.php
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409 lines (360 loc) · 9.7 KB
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<?php
/**
* @author : Jakiboy
* @package : FloatPHP
* @subpackage : Classes Connection Component
* @version : 1.5.x
* @copyright : (c) 2018 - 2025 Jihad Sinnaour <me@jihadsinnaour.com>
* @link : https://floatphp.com
* @license : MIT
*
* This file is a part of FloatPHP Framework.
*/
declare(strict_types=1);
namespace FloatPHP\Classes\Connection;
use FloatPHP\Interfaces\Classes\LoggerInterface;
use FloatPHP\Classes\Filesystem\{TypeCheck, Stringify, Arrayify};
use \PDOException;
use \PDO;
/**
* Advanced database manipulation.
*/
class Db
{
/**
* @access protected
* @var ?PDO $pdo
* @var ?\PDOStatement $query
* @var bool $isConnected
* @var array $parameters
* @var array $config
* @var ?LoggerInterface $logger
*/
protected ?PDO $pdo = null;
protected ?\PDOStatement $query = null;
protected bool $isConnected = false;
protected array $parameters = [];
protected array $config = [];
protected ?LoggerInterface $logger = null;
/**
* Connect to database.
*
* @access public
* @param array $config
* @param object LoggerInterface $logger
*/
public function __construct(array $config = [], ?LoggerInterface $logger = null)
{
$this->logger = $logger;
$this->config = $config; // Store config for potential reconnections
$this->connect($config);
$this->parameters = [];
}
/**
* Destructor - Close connection automatically.
*
* @access public
* @return void
*/
public function __destruct()
{
$this->close();
}
/**
* Close connection.
*
* @access public
* @return void
*/
public function close() : void
{
$this->pdo = null;
$this->query = null;
}
/**
* Bind parameters.
*
* @access public
* @param string $bind
* @param mixed $value
* @return void
*/
public function bind(string $bind, $value = null) : void
{
$count = sizeof($this->parameters);
$this->parameters[$count] = [":{$bind}", $value];
}
/**
* Bind more parameters.
*
* @access public
* @param array $bind
* @return void
*/
public function bindMore(array $bind) : void
{
if ( TypeCheck::isArray($bind) && !empty($bind) ) {
$columns = Arrayify::keys($bind);
foreach ($columns as $column) {
$this->bind($column, $bind[$column]);
}
}
}
/**
* Get query result.
*
* [FETCH_ASSOC : 2].
*
* @access public
* @param string $sql
* @param array $params
* @param int $mode
* @return mixed
*/
public function query(string $sql, ?array $params = null, int $mode = 2) : mixed
{
// Format SQL
$sql = Stringify::replace(search: "\r", replace: ' ', subject: $sql);
$sql = trim($sql);
// Init SQL
$this->init($sql, $params);
// Catch SQL statement
if ( $this->getStatementType($sql) == 'read' ) {
return $this->query->fetchAll($mode);
}
if ( $this->getStatementType($sql) == 'write' ) {
return $this->query->rowCount();
}
return null;
}
/**
* Get last inserted Id.
*
* @access public
* @return int|false
*/
public function lastInsertId() : int|false
{
if ( !$this->pdo ) {
return false;
}
return (int)$this->pdo->lastInsertId();
}
/**
* Begin transaction.
*
* @access public
* @return bool
*/
public function beginTransaction() : bool
{
if ( !$this->pdo ) {
return false;
}
return $this->pdo->beginTransaction();
}
/**
* Execute transaction.
*
* @access public
* @return bool
*/
public function executeTransaction() : bool
{
if ( !$this->pdo ) {
return false;
}
return $this->pdo->commit();
}
/**
* Rollback transaction.
*
* @access public
* @return bool
*/
public function rollBack() : bool
{
if ( !$this->pdo ) {
return false;
}
return $this->pdo->rollBack();
}
/**
* Returns column from the result set.
*
* @access public
* @param string $sql
* @param array $params
* @return mixed
*/
public function column(string $sql, ?array $params = null) : mixed
{
$this->init($sql, $params);
$columns = $this->query->fetchAll(PDO::FETCH_NUM);
$column = null;
foreach ($columns as $cells) {
$column[] = $cells[0];
}
return $column;
}
/**
* Returns row from the result set.
*
* [FETCH_ASSOC : 2].
*
* @access public
* @param string $sql
* @param array $params
* @param int $mode
* @return mixed
*/
public function row(string $sql, ?array $params = null, int $mode = 2) : mixed
{
$this->init($sql, $params);
$result = $this->query->fetch($mode);
$this->query->closeCursor();
return $result;
}
/**
* Returns value of one single field (column).
*
* @access public
* @param string $sql
* @param array $params
* @return mixed
*/
public function single(string $sql, ?array $params = null) : mixed
{
$this->init($sql, $params);
$result = $this->query->fetchColumn();
$this->query->closeCursor();
return $result;
}
/**
* Connect to database.
*
* @access protected
* @param array $config
* @return void
*/
protected function connect(array $config = []) : void
{
try {
// Get configuration
$config = Arrayify::merge([
'name' => '',
'host' => 'localhost',
'port' => 3306,
'user' => '',
'pswd' => '',
'charset' => 'utf8'
], $config);
extract($config);
$dsn = "mysql:dbname={$name};host={$host};port={$port}";
$this->pdo = new PDO($dsn, $user, $pswd, options: [
PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES {$charset}"
]);
// Log errors
$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Disable prepare statement emulation
$this->pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
// Connection succeeded
$this->isConnected = true;
} catch (PDOException $e) {
$message = $e->getMessage();
$this->log($message);
throw new PDOException("Database connection failed: " . $message, 0, $e);
}
}
/**
* Init SQL query.
*
* @access protected
* @param string $sql
* @param ?array $params
* @return void
*/
protected function init(string $sql, ?array $params = null) : void
{
// Reset parameters before each query for consistency
$this->parameters = [];
// Connect to database
if ( !$this->isConnected ) {
$this->connect($this->config);
}
try {
// Prepare query
$this->query = $this->pdo->prepare($sql);
// Add bind parameters
if ( $params !== null ) {
$this->bindMore($params);
}
// Bind parameters
if ( !empty($this->parameters) ) {
foreach ($this->parameters as $param => $value) {
if ( TypeCheck::isInt($value[1]) ) {
$type = PDO::PARAM_INT;
} elseif ( TypeCheck::isBool($value[1]) ) {
$type = PDO::PARAM_BOOL;
} elseif ( TypeCheck::isNull($value[1]) ) {
$type = PDO::PARAM_NULL;
} else {
$type = PDO::PARAM_STR;
}
// Add type when binding the values to the column
$this->query->bindValue($value[0], $value[1], $type);
}
}
// Execute SQL
$this->query->execute();
} catch (PDOException $e) {
$message = $e->getMessage();
$this->log($message, $sql);
throw new PDOException("Query execution failed: " . $message, (int)$e->getCode(), $e);
}
}
/**
* Get query statement type.
*
* @access protected
* @param string $sql
* @return string|false
*/
protected function getStatementType(string $sql = '') : string|false
{
if ( empty($sql) ) {
return false;
}
$sql = trim(Stringify::replaceRegex('/\s+/', ' ', $sql));
if ( empty($sql) ) {
return false;
}
$firstWord = Stringify::lowercase(explode(' ', $sql)[0]);
return match ($firstWord) {
'select', 'show' => 'read',
'insert', 'update', 'delete' => 'write',
default => false
};
}
/**
* Log error.
*
* @access protected
* @param ?string $message
* @param ?string $sql
* @return string
*/
protected function log(?string $message = null, ?string $sql = null) : string
{
if ( !$message ) {
$message = 'Unhandled Exception';
}
if ( !empty($sql) ) {
$message .= "\r\nRaw SQL : {$sql}";
}
if ( $this->logger ) {
$this->logger->error($message);
}
return $message;
}
}