PHP-MySQL-Class/DBPDO.php at master · a1phanumeric/PHP-MySQL-Class · GitHub

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<?php

namespace A1phanumeric;

use Closure;

use PDO;

use PDOException;

use PDOStatement;

use RuntimeException;

class DBPDO

{

private static array $instances = [];

public ?PDO $pdo = null;

private ?string $error = null;

private string $dbname;

private string $dbhost;

private string $dbuser;

private string $dbpass;

private bool $sqlserver;

private array $options;

/** @var callable|null */

private $queryLogger = null;

public static function getInstance(

string $dbhost,

string $dbname,

string $dbuser,

string $dbpass,

bool $sqlserver = false,

array $options = []

): self {

$instanceKey = self::buildInstanceKey($dbhost, $dbname, $dbuser, $sqlserver, $options);

if (!isset(self::$instances[$instanceKey])) {

self::$instances[$instanceKey] = new self($dbhost, $dbname, $dbuser, $dbpass, $sqlserver, $options);

}

return self::$instances[$instanceKey];

}

public function __construct(

string $dbhost = '',

string $dbname = '',

string $dbuser = '',

string $dbpass = '',

bool $sqlserver = false,

array $options = []

) {

$this->dbhost = $dbhost;

$this->dbname = $dbname;

$this->dbuser = $dbuser;

$this->dbpass = $dbpass;

$this->sqlserver = $sqlserver;

$this->options = $options;

$this->connect();

}

private static function buildInstanceKey(

string $dbhost,

string $dbname,

string $dbuser,

bool $sqlserver,

array $options

): string {

$stableOptions = $options;

ksort($stableOptions);

return hash('sha256', implode('|', [

$dbhost,

$dbname,

$dbuser,

$sqlserver ? 'sqlsrv' : 'mysql',

json_encode($stableOptions),

]));

}

// Disallow cloning and unserializing

private function __clone()

{

}

public function __wakeup(): void

{

throw new RuntimeException('Unserializing DBPDO is not allowed.');

}

public function prep_query(string $query): PDOStatement

{

if ($this->pdo === null && !$this->connect()) {

throw new RuntimeException('Database connection is not available.');

}

return $this->pdo->prepare($query);

}

public function connect(): bool

{

if ($this->pdo instanceof PDO) {

return true;

}

$dsn = $this->buildDsn();

$user = $this->dbuser;

$password = $this->dbpass;

try {

$this->pdo = new PDO($dsn, $user, $password, $this->buildPdoAttributes());

$this->error = null;

return true;

} catch (PDOException $e) {

$this->error = $e->getMessage();

return false;

}

public function table_exists(string $table_name): bool

{

if ($this->sqlserver) {

$stmt = $this->execute(

'SELECT 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ? AND TABLE_CATALOG = ?',

[$table_name, $this->dbname]

);

if ($stmt === false) {

return false;

}

return (bool) $stmt->fetchColumn();

}

$stmt = $this->prep_query('SHOW TABLES LIKE ?');

$stmt->execute([$table_name]);

return $stmt->rowCount() > 0;

}

/**

* @param mixed $values

public function execute(string $query, $values = null, bool $debug = false)

{

$params = $this->normalizeValues($values);

if ($debug) {

trigger_error('DBPDO::execute($debug=true) is deprecated. Use setQueryLogger() for diagnostics.', E_USER_DEPRECATED);

echo $query;

print_r($params);

return false;

}

$start = microtime(true);

try {

$stmt = $this->prep_query($query);

$stmt->execute($params);

$durationMs = (microtime(true) - $start) * 1000;

if (is_callable($this->queryLogger)) {

($this->queryLogger)($query, $params, $durationMs, null);

}

return $stmt;

} catch (PDOException $e) {

$this->error = $e->getMessage();

if (is_callable($this->queryLogger)) {

($this->queryLogger)($query, $params, null, $this->error);

}

return false;

}

/**

* @param mixed $values

public function fetch(string $query, $values = null): ?array

{

$stmt = $this->execute($query, $values);

if ($stmt === false) {

return null;

}

$result = $stmt->fetch(PDO::FETCH_ASSOC);

return $result === false ? null : $result;

}

/**

* @param mixed $values

public function fetchAll(string $query, $values = null, ?string $key = null): array

{

$stmt = $this->execute($query, $values);

if ($stmt === false) {

return [];

}

$results = $stmt->fetchAll(PDO::FETCH_ASSOC);

if ($key !== null && !empty($results)) {

$keyed_results = [];

foreach ($results as $result) {

if (array_key_exists($key, $result)) {

$keyed_results[$result[$key]] = $result;

}

return $keyed_results;

}

return $results;

}

public function beginTransaction(): bool

{

if ($this->pdo === null && !$this->connect()) {

return false;

}

return $this->pdo->beginTransaction();

}

public function commit(): bool

{

if ($this->pdo === null) {

return false;

}

return $this->pdo->commit();

}

public function rollBack(): bool

{

if ($this->pdo === null || !$this->pdo->inTransaction()) {

return false;

}

return $this->pdo->rollBack();

}

public function inTransaction(): bool

{

if ($this->pdo === null) {

return false;

}

return $this->pdo->inTransaction();

}

/**

* @param Closure $callback function(DBPDO $db): mixed

* @return mixed

public function transaction(Closure $callback)

{

if (!$this->beginTransaction()) {

throw new RuntimeException('Unable to start database transaction.');

}

try {

$result = $callback($this);

$this->commit();

return $result;

} catch (\Throwable $e) {

if ($this->inTransaction()) {

$this->rollBack();

}

throw $e;

}

public function lastInsertId(): string

{

if ($this->pdo === null && !$this->connect()) {

return '0';

}

return $this->pdo->lastInsertId();

}

public function getPdo(): ?PDO

{

return $this->pdo;

}

public function getLastError(): ?string

{

return $this->error;

}

/**

* @param callable $logger function(string $query, array $params, ?float $durationMs, ?string $error): void

public function setQueryLogger(callable $logger): self

{

$this->queryLogger = $logger;

return $this;

}

private function buildDsn(): string

{

if ($this->sqlserver) {

$encrypt = $this->options['encrypt'] ?? false;

$trustServerCertificate = $this->options['trust_server_certificate'] ?? false;

$port = $this->options['port'] ?? null;

$server = $this->dbhost;

if ($port !== null) {

$server .= ',' . $port;

}

return sprintf(

'sqlsrv:Server=%s;Database=%s;Encrypt=%s;TrustServerCertificate=%s',

$server,

$this->dbname,

$encrypt ? 'yes' : 'no',

$trustServerCertificate ? 'yes' : 'no'

);

}

$charset = $this->options['charset'] ?? 'utf8mb4';

$port = $this->options['port'] ?? null;

$dsn = sprintf('mysql:dbname=%s;host=%s;charset=%s', $this->dbname, $this->dbhost, $charset);

if ($port !== null) {

$dsn .= ';port=' . (int) $port;

}

return $dsn;

}

private function buildPdoAttributes(): array

{

$persistent = $this->options['persistent'] ?? false;

$attributes = [

PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,

PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,

PDO::ATTR_PERSISTENT => (bool) $persistent,

];

if (!$this->sqlserver) {

$attributes[PDO::ATTR_EMULATE_PREPARES] = false;

if (isset($this->options['timeout'])) {

$attributes[PDO::ATTR_TIMEOUT] = (int) $this->options['timeout'];

}

if (isset($this->options['attributes']) && is_array($this->options['attributes'])) {

$attributes = $this->options['attributes'] + $attributes;

}

return $attributes;

}

/**

* @param mixed $values

private function normalizeValues($values): array

{

if ($values === null) {

return [];

}

if (is_array($values)) {

return $values;

}

return [$values];

}

PHP-MySQL-Class/DBPDO.php at master · a1phanumeric/PHP-MySQL-Class · GitHub

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