98 lines
1.8 KiB
PHP
98 lines
1.8 KiB
PHP
<?php
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class Database {
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static private $instance;
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private $dbh;
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private $stats;
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private $result;
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static function getInstance() {
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if (!isset(self::$instance))
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self::$instance = new Database();
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return self::$instance;
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}
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/*
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* TODO: errorhandling?
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*/
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private function __construct() {
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$this->dbh = mysql_pconnect(DB_HOST, DB_USER, DB_PASS);
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mysql_select_db(DB_NAME, $this->dbh);
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$stats = array();
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}
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/*
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* TODO: errorhandling?
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*/
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function query($sql) {
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$start = microtime(true);
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$this->result = mysql_query($sql, $this->dbh);
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$error = mysql_error($this->dbh);
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$end = microtime(true);
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$this->stats[] = array('query' => $sql, 'error' => $error, 'time' => $end - $start);
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return $this->result;
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}
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function fetch_assoc() {
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return mysql_fetch_assoc($this->result);
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}
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function fetch_array() {
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return mysql_fetch_array($this->result);
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}
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function fetch_row() {
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return mysql_fetch_row($this->result);
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}
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function num_rows() {
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return mysql_num_rows($this->result);
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}
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function insert_id() {
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return mysql_insert_id();
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}
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function affected_rows() {
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return mysql_affected_rows($this->result);
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}
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static function getQueryStats() {
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$sum = 0;
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$errors = 0;
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$stats = self::$instance->stats;
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unset($stats['last']);
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if (count($stats) > 0) {
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foreach ($stats as $key => $val) {
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$sum += $val['time'];
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if (!empty($val['error']))
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$errors++;
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}
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foreach ($stats as $key => $val)
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$stats[$key]['percent'] = round($val['time'] / $sum, 2);
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}
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$stats['last'] = array('count' => count($stats), 'errors' => $errors, 'sum' => round($sum, 4));
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return $stats;
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}
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static function resetQueryStats() {
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unset($instance->stats);
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}
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function close($force = false) {
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if ($force) {
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mysql_close($instance->dbh);
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unset($instance);
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}
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}
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}
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?>
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