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php链接数据库类 php连接数据库查询数据( 二 )

IT技术数据库


else
{
if (PHP_VERSION = '4.2')
{
$this-link = @mysql_connect($dbhost, $dbuser, $dbpw, true);
}
else
{
$this-link = @mysql_connect($dbhost, $dbuser, $dbpw);
mt_srand((double)microtime() * 1000000);
}
if (!$this-link)
{
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);
if ($this-version'4.1')
{
if ($dbcharset != 'latin1')
{
mysql_query("SET character_set_connection=$dbcharset, character_set_results=$dbcharset, character_set_client=binary", $this-link);
}
if ($this-version'5.0.1')
{
mysql_query("SET sql_mode=''", $this-link);
}
}
if ($dbname)
{
if (mysql_select_db($dbname, $this-link) === false )
{
if (!$quiet)
{
$this-ErrorMsg("Can't select MySQL database($dbname)!");
}
return false;
}
else
{
return true;
}
}
else
{
return true;
}
}
function query($sql, $type = '')
{
if ($this-link === 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
{
$this-queryTime = microtime();
}
}
if (!($query = mysql_query($sql, $this-link))$type != 'SILENT')
{
$this-error_message[]['message'] = 'MySQL Query Error';
$this-error_message[]['sql'] = $sql;
$this-error_message[]['error'] = mysql_error($this-link);
$this-error_message[]['errno'] = mysql_errno($this-link);
$this-ErrorMsg();
return false;
}
return $query;
}
function affected_rows()
{
return mysql_affected_rows($this-link);
}
function num_fields($query)
{
return mysql_num_fields($query);
}
function error()
{
return mysql_error($this-link);
}
function errno()
{
return mysql_errno($this-link);
}
function num_rows($query)
{
return mysql_num_rows($query);
}
function insert_id()
{
return mysql_insert_id($this-link);
}
function fetchRow($query)
{
return mysql_fetch_assoc($query);
}
function fetcharray($query)
{
return mysql_fetch_array($query);
}
function version()
{
return $this-version;
}
function close()
{
return mysql_close($this-link);
}
function ErrorMsg($message = '', $sql = '')
{
if ($message)
{
echo "$message\n\n";
}
else
{
echo "bMySQL server error report:";
print_r($this-error_message);
}
exit;
}
function getCol($sql)
{
$res = $this-query($sql);
if ($res !== false)
{
$arr = array();
while ($row = mysql_fetch_row($res))
{
$arr[] = $row[0];
}
return $arr;
}
else
{
return false;
}
}
function getOne($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 '';
}
}

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