cw
77 lines
2.5 KiB
PHP
77 lines
2.5 KiB
PHP
<?php
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// core/Database.php
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class Database {
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private static ?Database $instance = null;
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private PDO $pdo;
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private function __construct() {
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$dsn = 'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';charset=' . DB_CHARSET;
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$options = [
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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PDO::ATTR_EMULATE_PREPARES => false,
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PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8mb4"
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];
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try {
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$this->pdo = new PDO($dsn, DB_USER, DB_PASS, $options);
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} catch (PDOException $e) {
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die(json_encode(['error' => 'Database connection failed: ' . $e->getMessage()]));
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}
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}
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public static function getInstance(): Database {
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if (self::$instance === null) {
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self::$instance = new Database();
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}
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return self::$instance;
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}
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public function getConnection(): PDO {
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return $this->pdo;
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}
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// Shorthand query
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public function query(string $sql, array $params = []): PDOStatement {
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$stmt = $this->pdo->prepare($sql);
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$stmt->execute($params);
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return $stmt;
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}
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public function fetchAll(string $sql, array $params = []): array {
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return $this->query($sql, $params)->fetchAll();
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}
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public function fetchOne(string $sql, array $params = []): ?array {
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$row = $this->query($sql, $params)->fetch();
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return $row ?: null;
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}
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public function insert(string $table, array $data): int {
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$cols = implode(', ', array_keys($data));
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$placeholders = implode(', ', array_fill(0, count($data), '?'));
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$sql = "INSERT INTO `$table` ($cols) VALUES ($placeholders)";
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$this->query($sql, array_values($data));
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return (int)$this->pdo->lastInsertId();
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}
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public function update(string $table, array $data, string $where, array $whereParams = []): int {
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$sets = implode(', ', array_map(fn($k) => "`$k` = ?", array_keys($data)));
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$sql = "UPDATE `$table` SET $sets WHERE $where";
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$stmt = $this->query($sql, array_merge(array_values($data), $whereParams));
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return $stmt->rowCount();
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}
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public function delete(string $table, string $where, array $params = []): int {
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$stmt = $this->query("DELETE FROM `$table` WHERE $where", $params);
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return $stmt->rowCount();
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}
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public function lastInsertId(): string {
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return $this->pdo->lastInsertId();
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}
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// Prevent cloning
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private function __clone() {}
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}
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