45 lines
1.3 KiB
PHP
45 lines
1.3 KiB
PHP
<?php
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/**
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* C-Relay-PG Admin — PDO database connection helper.
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*
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* Provides a singleton PDO connection to the relay's PostgreSQL database.
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* All admin pages use db() to get the connection.
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*/
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require_once __DIR__ . '/config.php';
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function db(): PDO {
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static $pdo = null;
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if ($pdo === null) {
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$cfg = require __DIR__ . '/config.php';
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$dsn = sprintf(
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'pgsql:host=%s;port=%d;dbname=%s;user=%s;password=%s',
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$cfg['db_host'],
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$cfg['db_port'],
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$cfg['db_name'],
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$cfg['db_user'],
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$cfg['db_password']
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);
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try {
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$pdo = new PDO($dsn, null, null, [
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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 $e) {
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http_response_code(500);
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die('Database connection failed: ' . htmlspecialchars($e->getMessage()));
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}
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}
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return $pdo;
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}
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/** Get a config value from the admin config file. */
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function cfg(string $key, $default = null) {
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static $cfg = null;
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if ($cfg === null) {
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$cfg = require __DIR__ . '/config.php';
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}
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return $cfg[$key] ?? $default;
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}
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