<?php/*** ECSHOP MYSQL 公用类库* ============================================================================* * 版权所有 2005-2012 上海商派网络科技有限公司，并保留所有权利。* 网站地址: http://www.ecshop.com；* ----------------------------------------------------------------------------* 这不是一个自由软件！您只能在不用于商业目的的前提下对程序代码进行修改和* 使用；不允许对程序代码以任何形式任何目的的再发布。* ============================================================================* $Author: liubo $* $Id: cls_mysql.php 17217 2011-01-19 06:29:08Z liubo $
*/if (!defined('IN_ECS'))
{die('Hacking attempt');
}class cls_mysql
{var $link_id    = NULL;var $settings   = array();var $queryCount = 0;var $queryTime  = '';var $queryLog   = array();var $max_cache_time = 300; // 最大的缓存时间，以秒为单位var $cache_data_dir = 'temp/query_caches/';var $root_path      = '';var $error_message  = array();var $platform       = '';var $version        = '';var $dbhash         = '';var $starttime      = 0;var $timeline       = 0;var $timezone       = 0;var $mysql_config_cache_file_time = 0;var $mysql_disable_cache_tables = array(); // 不允许被缓存的表，遇到将不会进行缓存function __construct($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'gbk', $pconnect = 0, $quiet = 0){$this->cls_mysql($dbhost, $dbuser, $dbpw, $dbname, $charset, $pconnect, $quiet);}function cls_mysql($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'gbk', $pconnect = 0, $quiet = 0){if (defined('EC_CHARSET')){$charset = strtolower(str_replace('-', '', EC_CHARSET));}if (defined('ROOT_PATH') && !$this->root_path){$this->root_path = ROOT_PATH;}if ($quiet){$this->connect($dbhost, $dbuser, $dbpw, $dbname, $charset, $pconnect, $quiet);}else{$this->settings = array('dbhost'   => $dbhost,'dbuser'   => $dbuser,'dbpw'     => $dbpw,'dbname'   => $dbname,'charset'  => $charset,'pconnect' => $pconnect);}}function connect($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'utf8', $pconnect = 0, $quiet = 0){if ($pconnect){if (!($this->link_id = @mysql_pconnect($dbhost, $dbuser, $dbpw))){if (!$quiet){$this->ErrorMsg("Can't pConnect MySQL Server($dbhost)!");}return false;}}else{if (PHP_VERSION >= '4.2'){$this->link_id = @mysql_connect($dbhost, $dbuser, $dbpw, true);}else{$this->link_id = @mysql_connect($dbhost, $dbuser, $dbpw);mt_srand((double)microtime() * 1000000); // 对 PHP 4.2 以下的版本进行随机数函数的初始化工作}if (!$this->link_id){if (!$quiet){$this->ErrorMsg("Can't Connect MySQL Server($dbhost)!");}return false;}}$this->dbhash  = md5($this->root_path . $dbhost . $dbuser . $dbpw . $dbname);$this->version = mysql_get_server_info($this->link_id);/* 如果mysql 版本是 4.1+ 以上，需要对字符集进行初始化 */if ($this->version > '4.1'){if ($charset != 'latin1'){mysql_query("SET character_set_connection=$charset, character_set_results=$charset, character_set_client=binary", $this->link_id);}if ($this->version > '5.0.1'){mysql_query("SET sql_mode=''", $this->link_id);}}$sqlcache_config_file = $this->root_path . $this->cache_data_dir . 'sqlcache_config_file_' . $this->dbhash . '.php';@include($sqlcache_config_file);$this->starttime = time();if ($this->max_cache_time && $this->starttime > $this->mysql_config_cache_file_time + $this->max_cache_time){if ($dbhost != '.'){$result = mysql_query("SHOW VARIABLES LIKE 'basedir'", $this->link_id);$row    = mysql_fetch_assoc($result);if (!empty($row['Value']{1}) && $row['Value']{1} == ':' && !empty($row['Value']{2}) && $row['Value']{2} == "\\"){$this->platform = 'WINDOWS';}else{$this->platform = 'OTHER';}}else{$this->platform = 'WINDOWS';}if ($this->platform == 'OTHER' &&($dbhost != '.' && strtolower($dbhost) != 'localhost:3306' && $dbhost != '127.0.0.1:3306') ||(PHP_VERSION >= '5.1' && date_default_timezone_get() == 'UTC')){$result = mysql_query("SELECT UNIX_TIMESTAMP() AS timeline, UNIX_TIMESTAMP('" . date('Y-m-d H:i:s', $this->starttime) . "') AS timezone", $this->link_id);$row    = mysql_fetch_assoc($result);if ($dbhost != '.' && strtolower($dbhost) != 'localhost:3306' && $dbhost != '127.0.0.1:3306'){$this->timeline = $this->starttime - $row['timeline'];}if (PHP_VERSION >= '5.1' && date_default_timezone_get() == 'UTC'){$this->timezone = $this->starttime - $row['timezone'];}}$content = '<' . "?php\r\n" .'$this->mysql_config_cache_file_time = ' . $this->starttime . ";\r\n" .'$this->timeline = ' . $this->timeline . ";\r\n" .'$this->timezone = ' . $this->timezone . ";\r\n" .'$this->platform = ' . "'" . $this->platform . "';\r\n?" . '>';@file_put_contents($sqlcache_config_file, $content);}/* 选择数据库 */if ($dbname){if (mysql_select_db($dbname, $this->link_id) === false ){if (!$quiet){$this->ErrorMsg("Can't select MySQL database($dbname)!");}return false;}else{return true;}}else{return true;}}function select_database($dbname){return mysql_select_db($dbname, $this->link_id);}function set_mysql_charset($charset){/* 如果mysql 版本是 4.1+ 以上，需要对字符集进行初始化 */if ($this->version > '4.1'){if (in_array(strtolower($charset), array('gbk', 'big5', 'utf-8', 'utf8'))){$charset = str_replace('-', '', $charset);}if ($charset != 'latin1'){mysql_query("SET character_set_connection=$charset, character_set_results=$charset, character_set_client=binary", $this->link_id);}}}function fetch_array($query, $result_type = MYSQL_ASSOC){return mysql_fetch_array($query, $result_type);}function query($sql, $type = ''){if ($this->link_id === NULL){$this->connect($this->settings['dbhost'], $this->settings['dbuser'], $this->settings['dbpw'], $this->settings['dbname'], $this->settings['charset'], $this->settings['pconnect']);$this->settings = array();}if ($this->queryCount++ <= 99){$this->queryLog[] = $sql;}if ($this->queryTime == ''){if (PHP_VERSION >= '5.0.0'){$this->queryTime = microtime(true);}else{$this->queryTime = microtime();}}/* 当当前的时间大于类初始化时间的时候，自动执行 ping 这个自动重新连接操作 */if (PHP_VERSION >= '4.3' && time() > $this->starttime + 1){mysql_ping($this->link_id);}if (!($query = mysql_query($sql, $this->link_id)) && $type != 'SILENT'){$this->error_message[]['message'] = 'MySQL Query Error';$this->error_message[]['sql'] = $sql;$this->error_message[]['error'] = mysql_error($this->link_id);$this->error_message[]['errno'] = mysql_errno($this->link_id);$this->ErrorMsg();return false;}if (defined('DEBUG_MODE') && (DEBUG_MODE & 8) == 8){$logfilename = $this->root_path . DATA_DIR . '/mysql_query_' . $this->dbhash . '_' . date('Y_m_d') . '.log';$str = $sql . "\n\n";if (PHP_VERSION >= '5.0'){file_put_contents($logfilename, $str, FILE_APPEND);}else{$fp = @fopen($logfilename, 'ab+');if ($fp){fwrite($fp, $str);fclose($fp);}}}return $query;}function affected_rows(){return mysql_affected_rows($this->link_id);}function error(){return mysql_error($this->link_id);}function errno(){return mysql_errno($this->link_id);}function result($query, $row){return @mysql_result($query, $row);}function num_rows($query){return mysql_num_rows($query);}function num_fields($query){return mysql_num_fields($query);}function free_result($query){return mysql_free_result($query);}function insert_id(){return mysql_insert_id($this->link_id);}function fetchRow($query){return mysql_fetch_assoc($query);}function fetch_fields($query){return mysql_fetch_field($query);}function version(){return $this->version;}function ping(){if (PHP_VERSION >= '4.3'){return mysql_ping($this->link_id);}else{return false;}}function escape_string($unescaped_string){if (PHP_VERSION >= '4.3'){return mysql_real_escape_string($unescaped_string);}else{return mysql_escape_string($unescaped_string);}}function close(){return mysql_close($this->link_id);}function ErrorMsg($message = '', $sql = ''){if ($message){echo "<b>ECSHOP info</b>: $message\n\n<br /><br />";//print('<a href="http://faq.comsenz.com/?type=mysql&dberrno=2003&dberror=Can%27t%20connect%20to%20MySQL%20server%20on" target="_blank">http://faq.comsenz.com/</a>');}else{echo "<b>MySQL server error report:";print_r($this->error_message);//echo "<br /><br /><a href='http://faq.comsenz.com/?type=mysql&dberrno=" . $this->error_message[3]['errno'] . "&dberror=" . urlencode($this->error_message[2]['error']) . "' target='_blank'>http://faq.comsenz.com/</a>";}exit;}/* 仿真 Adodb 函数 */function selectLimit($sql, $num, $start = 0){if ($start == 0){$sql .= ' LIMIT ' . $num;}else{$sql .= ' LIMIT ' . $start . ', ' . $num;}return $this->query($sql);}function getOne($sql, $limited = false){if ($limited == true){$sql = trim($sql . ' LIMIT 1');}$res = $this->query($sql);if ($res !== false){$row = mysql_fetch_row($res);if ($row !== false){return $row[0];}else{return '';}}else{return false;}}function getOneCached($sql, $cached = 'FILEFIRST'){$sql = trim($sql . ' LIMIT 1');$cachefirst = ($cached == 'FILEFIRST' || ($cached == 'MYSQLFIRST' && $this->platform != 'WINDOWS')) && $this->max_cache_time;if (!$cachefirst){return $this->getOne($sql, true);}else{$result = $this->getSqlCacheData($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getOne($sql, true);if ($arr !== false && $cachefirst){$this->setSqlCacheData($result, $arr);}return $arr;}function getAll($sql){$res = $this->query($sql);if ($res !== false){$arr = array();while ($row = mysql_fetch_assoc($res)){$arr[] = $row;}return $arr;}else{return false;}}function getAllCached($sql, $cached = 'FILEFIRST'){$cachefirst = ($cached == 'FILEFIRST' || ($cached == 'MYSQLFIRST' && $this->platform != 'WINDOWS')) && $this->max_cache_time;if (!$cachefirst){return $this->getAll($sql);}else{$result = $this->getSqlCacheData($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getAll($sql);if ($arr !== false && $cachefirst){$this->setSqlCacheData($result, $arr);}return $arr;}function getRow($sql, $limited = false){if ($limited == true){$sql = trim($sql . ' LIMIT 1');}$res = $this->query($sql);if ($res !== false){return mysql_fetch_assoc($res);}else{return false;}}function getRowCached($sql, $cached = 'FILEFIRST'){$sql = trim($sql . ' LIMIT 1');$cachefirst = ($cached == 'FILEFIRST' || ($cached == 'MYSQLFIRST' && $this->platform != 'WINDOWS')) && $this->max_cache_time;if (!$cachefirst){return $this->getRow($sql, true);}else{$result = $this->getSqlCacheData($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getRow($sql, true);if ($arr !== false && $cachefirst){$this->setSqlCacheData($result, $arr);}return $arr;}function getCol($sql){$res = $this->query($sql);if ($res !== false){$arr = array();while ($row = mysql_fetch_row($res)){$arr[] = $row[0];}return $arr;}else{return false;}}function getColCached($sql, $cached = 'FILEFIRST'){$cachefirst = ($cached == 'FILEFIRST' || ($cached == 'MYSQLFIRST' && $this->platform != 'WINDOWS')) && $this->max_cache_time;if (!$cachefirst){return $this->getCol($sql);}else{$result = $this->getSqlCacheData($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getCol($sql);if ($arr !== false && $cachefirst){$this->setSqlCacheData($result, $arr);}return $arr;}function autoExecute($table, $field_values, $mode = 'INSERT', $where = '', $querymode = ''){$field_names = $this->getCol('DESC ' . $table);$sql = '';if ($mode == 'INSERT'){$fields = $values = array();foreach ($field_names AS $value){if (array_key_exists($value, $field_values) == true){$fields[] = $value;$values[] = "'" . $field_values[$value] . "'";}}if (!empty($fields)){$sql = 'INSERT INTO ' . $table . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';}}else{$sets = array();foreach ($field_names AS $value){if (array_key_exists($value, $field_values) == true){$sets[] = $value . " = '" . $field_values[$value] . "'";}}if (!empty($sets)){$sql = 'UPDATE ' . $table . ' SET ' . implode(', ', $sets) . ' WHERE ' . $where;}}if ($sql){return $this->query($sql, $querymode);}else{return false;}}function autoReplace($table, $field_values, $update_values, $where = '', $querymode = ''){$field_descs = $this->getAll('DESC ' . $table);$primary_keys = array();foreach ($field_descs AS $value){$field_names[] = $value['Field'];if ($value['Key'] == 'PRI'){$primary_keys[] = $value['Field'];}}$fields = $values = array();foreach ($field_names AS $value){if (array_key_exists($value, $field_values) == true){$fields[] = $value;$values[] = "'" . $field_values[$value] . "'";}}$sets = array();foreach ($update_values AS $key => $value){if (array_key_exists($key, $field_values) == true){if (is_int($value) || is_float($value)){$sets[] = $key . ' = ' . $key . ' + ' . $value;}else{$sets[] = $key . " = '" . $value . "'";}}}$sql = '';if (empty($primary_keys)){if (!empty($fields)){$sql = 'INSERT INTO ' . $table . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';}}else{if ($this->version() >= '4.1'){if (!empty($fields)){$sql = 'INSERT INTO ' . $table . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';if (!empty($sets)){$sql .=  'ON DUPLICATE KEY UPDATE ' . implode(', ', $sets);}}}else{if (empty($where)){$where = array();foreach ($primary_keys AS $value){if (is_numeric($value)){$where[] = $value . ' = ' . $field_values[$value];}else{$where[] = $value . " = '" . $field_values[$value] . "'";}}$where = implode(' AND ', $where);}if ($where && (!empty($sets) || !empty($fields))){if (intval($this->getOne("SELECT COUNT(*) FROM $table WHERE $where")) > 0){if (!empty($sets)){$sql = 'UPDATE ' . $table . ' SET ' . implode(', ', $sets) . ' WHERE ' . $where;}}else{if (!empty($fields)){$sql = 'REPLACE INTO ' . $table . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';}}}}}if ($sql){return $this->query($sql, $querymode);}else{return false;}}function setMaxCacheTime($second){$this->max_cache_time = $second;}function getMaxCacheTime(){return $this->max_cache_time;}function getSqlCacheData($sql, $cached = ''){$sql = trim($sql);$result = array();$result['filename'] = $this->root_path . $this->cache_data_dir . 'sqlcache_' . abs(crc32($this->dbhash . $sql)) . '_' . md5($this->dbhash . $sql) . '.php';$data = @file_get_contents($result['filename']);if (isset($data{23})){$filetime = substr($data, 13, 10);$data     = substr($data, 23);if (($cached == 'FILEFIRST' && time() > $filetime + $this->max_cache_time) || ($cached == 'MYSQLFIRST' && $this->table_lastupdate($this->get_table_name($sql)) > $filetime)){$result['storecache'] = true;}else{$result['data'] = @unserialize($data);if ($result['data'] === false){$result['storecache'] = true;}else{$result['storecache'] = false;}}}else{$result['storecache'] = true;}return $result;}function setSqlCacheData($result, $data){if ($result['storecache'] === true && $result['filename']){@file_put_contents($result['filename'], '<?php exit;?>' . time() . serialize($data));clearstatcache();}}/* 获取 SQL 语句中最后更新的表的时间，有多个表的情况下，返回最新的表的时间 */function table_lastupdate($tables){if ($this->link_id === NULL){$this->connect($this->settings['dbhost'], $this->settings['dbuser'], $this->settings['dbpw'], $this->settings['dbname'], $this->settings['charset'], $this->settings['pconnect']);$this->settings = array();}$lastupdatetime = '0000-00-00 00:00:00';$tables = str_replace('`', '', $tables);$this->mysql_disable_cache_tables = str_replace('`', '', $this->mysql_disable_cache_tables);foreach ($tables AS $table){if (in_array($table, $this->mysql_disable_cache_tables) == true){$lastupdatetime = '2037-12-31 23:59:59';break;}if (strstr($table, '.') != NULL){$tmp = explode('.', $table);$sql = 'SHOW TABLE STATUS FROM `' . trim($tmp[0]) . "` LIKE '" . trim($tmp[1]) . "'";}else{$sql = "SHOW TABLE STATUS LIKE '" . trim($table) . "'";}$result = mysql_query($sql, $this->link_id);$row = mysql_fetch_assoc($result);if ($row['Update_time'] > $lastupdatetime){$lastupdatetime = $row['Update_time'];}}$lastupdatetime = strtotime($lastupdatetime) - $this->timezone + $this->timeline;return $lastupdatetime;}function get_table_name($query_item){$query_item = trim($query_item);$table_names = array();/* 判断语句中是不是含有 JOIN */if (stristr($query_item, ' JOIN ') == ''){/* 解析一般的 SELECT FROM 语句 */if (preg_match('/^SELECT.*?FROM\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?(?:(?:\s*AS)?\s*`?\w+`?)?(?:\s*,\s*(?:`?\w+`?\s*\.\s*)?`?\w+`?(?:(?:\s*AS)?\s*`?\w+`?)?)*)/is', $query_item, $table_names)){$table_names = preg_replace('/((?:`?\w+`?\s*\.\s*)?`?\w+`?)[^,]*/', '\1', $table_names[1]);return preg_split('/\s*,\s*/', $table_names);}}else{/* 对含有 JOIN 的语句进行解析 */if (preg_match('/^SELECT.*?FROM\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?)(?:(?:\s*AS)?\s*`?\w+`?)?.*?JOIN.*$/is', $query_item, $table_names)){$other_table_names = array();preg_match_all('/JOIN\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?)\s*/i', $query_item, $other_table_names);return array_merge(array($table_names[1]), $other_table_names[1]);}}return $table_names;}/* 设置不允许进行缓存的表 */function set_disable_cache_tables($tables){if (!is_array($tables)){$tables = explode(',', $tables);}foreach ($tables AS $table){$this->mysql_disable_cache_tables[] = $table;}array_unique($this->mysql_disable_cache_tables);}
}?>