0b7e2d0a5b
- Created complete documentation in docs/ directory - Added PROJECT_OVERVIEW.md with feature highlights and getting started guide - Added ARCHITECTURE.md with system design and technical details - Added SECURITY.md with comprehensive security implementation guide - Added DEVELOPMENT.md with development workflows and best practices - Added DEPLOYMENT.md with production deployment instructions - Added API.md with complete REST API documentation - Added CONTRIBUTING.md with contribution guidelines - Added CHANGELOG.md with version history and migration notes - Reorganized all documentation files into docs/ directory for better organization - Updated README.md with proper documentation links and quick navigation - Enhanced project structure with professional documentation standards
41 lines
1.1 KiB
PHP
41 lines
1.1 KiB
PHP
<?php
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// Database utility functions
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if (!defined("_VALID_ACCESS")) { exit("Direct access not allowed"); }
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function get_db_connection() {
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global $db;
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if ($db === null) {
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try {
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$dsn = "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4";
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$db = new PDO($dsn, DB_USER, DB_PASS, [
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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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]);
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} catch (PDOException $e) {
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error_log("Database connection failed: " . $e->getMessage());
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throw new Exception("Database connection failed");
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}
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}
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return $db;
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}
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function db_query($sql, $params = []) {
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$db = get_db_connection();
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$stmt = $db->prepare($sql);
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$stmt->execute($params);
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return $stmt;
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}
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function db_fetch($sql, $params = []) {
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return db_query($sql, $params)->fetch();
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}
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function db_fetch_all($sql, $params = []) {
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return db_query($sql, $params)->fetchAll();
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}
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function db_execute($sql, $params = []) {
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return db_query($sql, $params)->rowCount();
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}
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