103 lines
2.8 KiB
PHP
103 lines
2.8 KiB
PHP
<?php
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class Db
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{
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/** @var Db $instance */
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private static $instance;
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/** @var PDO|null $pdo */
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private $pdo;
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function __construct() {
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ORM::configure(self::get_dsn());
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ORM::configure('username', Config::get(Config::DB_USER));
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ORM::configure('password', Config::get(Config::DB_PASS));
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ORM::configure('return_result_sets', true);
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if (Config::get(Config::DB_TYPE) == "mysql" && Config::get(Config::MYSQL_CHARSET)) {
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ORM::configure('driver_options', array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES ' . Config::get(Config::MYSQL_CHARSET)));
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}
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}
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/**
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* @param int $delta adjust generated timestamp by this value in seconds (either positive or negative)
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* @return string
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*/
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static function NOW(int $delta = 0): string {
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return date("Y-m-d H:i:s", time() + $delta);
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}
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private function __clone() {
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//
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}
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public static function get_dsn(): string {
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$db_port = Config::get(Config::DB_PORT) ? ';port=' . Config::get(Config::DB_PORT) : '';
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$db_host = Config::get(Config::DB_HOST) ? ';host=' . Config::get(Config::DB_HOST) : '';
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if (Config::get(Config::DB_TYPE) == "mysql" && Config::get(Config::MYSQL_CHARSET)) {
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$db_charset = ';charset=' . Config::get(Config::MYSQL_CHARSET);
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} else {
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$db_charset = '';
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}
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return Config::get(Config::DB_TYPE) . ':dbname=' . Config::get(Config::DB_NAME) . $db_host . $db_port . $db_charset;
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}
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// this really shouldn't be used unless a separate PDO connection is needed
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// normal usage is Db::pdo()->prepare(...) etc
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public function pdo_connect() : PDO {
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try {
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$pdo = new PDO(self::get_dsn(),
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Config::get(Config::DB_USER),
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Config::get(Config::DB_PASS));
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} catch (Exception $e) {
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print "<pre>Exception while creating PDO object:" . $e->getMessage() . "</pre>";
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exit(101);
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}
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$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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if (Config::get(Config::DB_TYPE) == "pgsql") {
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$pdo->query("set client_encoding = 'UTF-8'");
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$pdo->query("set datestyle = 'ISO, european'");
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$pdo->query("set TIME ZONE 0");
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$pdo->query("set cpu_tuple_cost = 0.5");
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} else if (Config::get(Config::DB_TYPE) == "mysql") {
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$pdo->query("SET time_zone = '+0:0'");
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if (Config::get(Config::MYSQL_CHARSET)) {
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$pdo->query("SET NAMES " . Config::get(Config::MYSQL_CHARSET));
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}
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}
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return $pdo;
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}
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public static function instance() : Db {
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if (self::$instance == null)
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self::$instance = new self();
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return self::$instance;
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}
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public static function pdo() : PDO {
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if (self::$instance == null)
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self::$instance = new self();
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if (empty(self::$instance->pdo)) {
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self::$instance->pdo = self::$instance->pdo_connect();
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}
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return self::$instance->pdo;
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}
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public static function sql_random_function(): string {
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if (Config::get(Config::DB_TYPE) == "mysql") {
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return "RAND()";
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}
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return "RANDOM()";
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}
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}
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