diff --git a/config.php b/config.php
index c804c6e..15df501 100644
--- a/config.php
+++ b/config.php
@@ -6,6 +6,7 @@
 		'admindir'	=>	'upload',	//管理员上传目录，一般保持默认
 		'username'	=>	'xiaoz',	//管理员账号
 		'password'	=>	'xiaoz.me',	//管理员密码
+		'dbfile'    =>  'mypic.db',
 		'tinypng'	=>	''			//使用TinyPNG压缩图片，填写TinyPNG KEY，为空则不启用压缩
 	);
 	//是否启用腾讯万象优图鉴黄识别
diff --git a/explore.php b/explore.php
index 983283c..710691e 100644
--- a/explore.php
+++ b/explore.php
@@ -1,154 +1,94 @@
-<?php
-	error_reporting(E_ALL^E_NOTICE^E_WARNING^E_DEPRECATED);
-	//载入配置
-	include_once('./config.php');
-	//载入header
-	include_once('./header.php');
-	//获取页数
-	$page = $_GET['page'];
-	
-	$current_time = date('ym',time());	//当前月份
-
-	$time = $_GET['time'];
-	$mydir = $_GET['dir'];
-
-	//时间不存在，用当前时间
-	if(!isset($time)) {
-		$time = $current_time;
-	}
-	//目录不存在，使用普通用户目录
-	if(!isset($mydir)) {
-		$mydir = $config['userdir'];
-	}
-	//目录存在，但是既不是用户目录也不是管理员目录
-	if(($mydir != $config['userdir']) && ($mydir != $config['admindir'])) {
-		$mydir = $config['userdir'];
-	}
-	//目录存在,并且是管理员目录
-	if($mydir == $config['admindir']) {
-		$mydir = $config['admindir'];
-		//改变下管理员链接地址
-		$geturl = "&dir=$mydir";
-	}
-	//还没有目录
-	if(!file_exists($mydir."/".$time."/")) {
-		//echo $mydir."/".$time."/";
-		echo "<h3 class = 'text-center'>空空如也！</h3>";
-		exit;
-	}
-?>
-<div class="container" style = "margin-top:40px;">
-	<div class="row">
-		<div class="col-lg-10 col-md-offset-1">
-			<!--图片预览-->
-			<div class="col-lg-6">
-				<img id = "viewid" src="./static/view.jpg" class="img-thumbnail img-responsive">
-			</div>
-			<!--图片预览END-->
-			<div class="col-lg-6">
-			<table class="table table-striped">
-			<tbody>
-<?php
-	function get_files($dir) {
-    $files = array();
- 
-    for (; $dir->valid(); $dir->next()) {
-        if ($dir->isDir() && !$dir->isDot()) {
-            if ($dir->haschildren()) {
-                $files = array_merge($files, get_files($dir->getChildren()));
-            };
-        }else if($dir->isFile()){
-            $files[] = $dir->getPathName();
-        }
-    }
-    return $files;
-	}
-
-	//如果页数不存在或者小于1
-	if((!isset($page)) || ($page <= 1)) {
-		$page = 1;
-		$i = 0;
-		$num = 15;
-	}
-	if($page > 1) {
-		$i = ($page - 1) * 15;
-		$num = $i + 15;
-	}
-	 
-	$path = $mydir.'/'.$time;
-	$dir = new RecursiveDirectoryIterator($path);
-	$fname = get_files($dir);
-	$allnum = count($fname) - 1;		//文件总数
-	//echo $allnum;
-	//最大页数
-	$allpage = round($allnum / 15,0);
-	$uppage = $page - 1;			//上一页
-	$downpage = $page + 1;			//下一页
-	
-	$downpage = ($page >= $allpage) ? $page : $downpage;
-	//echo $allpage;
-	
-	//如果文件数小于15
-	//$num = count($allnum < 15) ? $allnum : $num;
-	if($allnum <= 15) {
-		$num = $allnum;
-	}
-	
-	for($i;$i <= $num;$i++) {
-		$fname[$i] = str_replace("\\","/",$fname[$i]);
-		//如果文件是空的，则终止循环
-?>
-				<tr id = "row<?php echo $i; ?>">
-					<td onmouseover = "return view('<?php echo $config['domain'].$fname[$i] ?>');">
-					<?php 
-						echo "<a href = "."'".$config['domain'].$fname[$i]."' target = '_blank'>"."$fname[$i]</a>";
-					 ?>
-					 </td>
-					<td>
-						<?php
-							if(isset($_COOKIE['uid'])) {
-								echo "<a href = \"javascript:;\" onclick = \"del('$fname[$i]',$i);\">删除</a>";
-							}
-						?>
-					</td>
-				</tr>
-				<?php } ?>
-			</tbody>
-		</table>
-		<a href="?page=<?php echo $uppage.$geturl; ?>" class = "btn btn-primary"><span class = "glyphicon glyphicon-chevron-left"></span> 上一页</a>  
-		<a href="?page=<?php echo $downpage.$geturl; ?>" class = "btn btn-primary">下一页 <span class = "glyphicon glyphicon-chevron-right"></span></a>
-		</div>
-		</div>
-	</div>
-</div>
-<script>
-	function view(imgurl) {
-		$("#viewid").src;
-		$("#viewid").attr('src',imgurl); 
-	}
-	//删除图片
-	function del(filedir,rowid) {
-		//行id
-		var rowid = 'row' + rowid;
-		//确认删除？
-		var msg = "确认删除？";
-		if (confirm(msg)==true){ 
-			$.get("./functions.php?type=delete&dir="+filedir,function(data,status){
-				//删除成功
-				if(data == 'ok') {
-					$("#"+rowid).remove();
-				}
-				else{
-					alert(data);		//删除失败，弹出报错
-				}
-			});
-		}else{ 
-			return false; 
-		}
-	}
-</script>
-
-<?php
-	//载入页脚
-	include_once('./footer.php');
+<?php
+	error_reporting(E_ALL^E_NOTICE^E_WARNING^E_DEPRECATED);
+	//载入配置
+	include_once('./config.php');
+	//载入header
+	include_once('./header.php');
+
+	// 获得一张随机图片
+	function randompic() {
+		global $config;
+		include_once("./medoo.php");
+		$db = new medoo([
+			'database_type' => 'sqlite',
+			'database_file' => $config['dbfile']
+		]);
+		$ret = $db->query("SELECT * FROM pictures ORDER BY RANDOM() LIMIT 1")->fetchAll();
+		if ($ret[0]) {
+			return array(
+				"id" => $ret[0]['id'],
+				"showname" => $ret[0]['raw'],
+				"url" => $ret[0]['url']
+			);
+		} else
+			return null;
+	}
+
+	$current_time = date('ym',time());	//当前月份
+
+	$time = $_GET['time'];
+	$mydir = $_GET['dir'];
+
+	//时间不存在，用当前时间
+	if(!isset($time)) {
+		$time = $current_time;
+	}
+	//目录不存在，使用普通用户目录
+	if(!isset($mydir)) {
+		$mydir = $config['userdir'];
+	}
+	//目录存在，但是既不是用户目录也不是管理员目录
+	if(($mydir != $config['userdir']) && ($mydir != $config['admindir'])) {
+		$mydir = $config['userdir'];
+	}
+	//目录存在,并且是管理员目录
+	if($mydir == $config['admindir']) {
+		$mydir = $config['admindir'];
+	}
+	$pic="./static/view.jpg";
+	$info=randompic();
+	if ($info) 
+		$pic = $info['url'];
+?>
+<div class="container" style = "margin-top:40px;">
+	<div class="row">
+		<div class="col-lg-10 col-md-offset-1">
+			<!--图片预览-->
+			<div class="text-center">
+				<img id = "viewid" src="<?php echo $pic?>" class="img-thumbnail img-responsive">
+			</div>
+			<!--图片预览END-->
+		</div>
+	</div>
+</div>
+<script>
+	function view(imgurl) {
+		$("#viewid").src;
+		$("#viewid").attr('src',imgurl); 
+	}
+	//删除图片
+	function del(filedir,rowid) {
+		//行id
+		var rowid = 'row' + rowid;
+		//确认删除？
+		var msg = "确认删除？";
+		if (confirm(msg)==true){ 
+			$.get("./functions.php?type=delete&dir="+filedir,function(data,status){
+				//删除成功
+				if(data == 'ok') {
+					$("#"+rowid).remove();
+				}
+				else{
+					alert(data);		//删除失败，弹出报错
+				}
+			});
+		}else{ 
+			return false; 
+		}
+	}
+</script>
+
+<?php
+	//载入页脚
+	include_once('./footer.php');
 ?>
\ No newline at end of file
diff --git a/medoo.php b/medoo.php
new file mode 100644
index 0000000..a57941f
--- /dev/null
+++ b/medoo.php
@@ -0,0 +1,1123 @@
+<?php
+/*!
+ * Medoo database framework
+ * http://medoo.in
+ * Version 1.1.3
+ *
+ * Copyright 2016, Angel Lai
+ * Released under the MIT license
+ */
+class medoo
+{
+	// General
+	protected $database_type;
+
+	protected $charset;
+
+	protected $database_name;
+
+	// For MySQL, MariaDB, MSSQL, Sybase, PostgreSQL, Oracle
+	protected $server;
+
+	protected $username;
+
+	protected $password;
+
+	// For SQLite
+	protected $database_file;
+
+	// For MySQL or MariaDB with unix_socket
+	protected $socket;
+
+	// Optional
+	protected $port;
+
+	protected $prefix;
+
+	protected $option = array();
+
+	// Variable
+	protected $logs = array();
+
+	protected $debug_mode = false;
+
+	public function __construct($options = null)
+	{
+		try {
+			$commands = array();
+			$dsn = '';
+
+			if (is_array($options))
+			{
+				foreach ($options as $option => $value)
+				{
+					$this->$option = $value;
+				}
+			}
+			else
+			{
+				return false;
+			}
+
+			if (
+				isset($this->port) &&
+				is_int($this->port * 1)
+			)
+			{
+				$port = $this->port;
+			}
+
+			$type = strtolower($this->database_type);
+			$is_port = isset($port);
+
+			if (isset($options[ 'prefix' ]))
+			{
+				$this->prefix = $options[ 'prefix' ];
+			}
+
+			switch ($type)
+			{
+				case 'mariadb':
+					$type = 'mysql';
+
+				case 'mysql':
+					if ($this->socket)
+					{
+						$dsn = $type . ':unix_socket=' . $this->socket . ';dbname=' . $this->database_name;
+					}
+					else
+					{
+						$dsn = $type . ':host=' . $this->server . ($is_port ? ';port=' . $port : '') . ';dbname=' . $this->database_name;
+					}
+
+					// Make MySQL using standard quoted identifier
+					$commands[] = 'SET SQL_MODE=ANSI_QUOTES';
+					break;
+
+				case 'pgsql':
+					$dsn = $type . ':host=' . $this->server . ($is_port ? ';port=' . $port : '') . ';dbname=' . $this->database_name;
+					break;
+
+				case 'sybase':
+					$dsn = 'dblib:host=' . $this->server . ($is_port ? ':' . $port : '') . ';dbname=' . $this->database_name;
+					break;
+
+				case 'oracle':
+					$dbname = $this->server ?
+						'//' . $this->server . ($is_port ? ':' . $port : ':1521') . '/' . $this->database_name :
+						$this->database_name;
+
+					$dsn = 'oci:dbname=' . $dbname . ($this->charset ? ';charset=' . $this->charset : '');
+					break;
+
+				case 'mssql':
+					$dsn = strstr(PHP_OS, 'WIN') ?
+						'sqlsrv:server=' . $this->server . ($is_port ? ',' . $port : '') . ';database=' . $this->database_name :
+						'dblib:host=' . $this->server . ($is_port ? ':' . $port : '') . ';dbname=' . $this->database_name;
+
+					// Keep MSSQL QUOTED_IDENTIFIER is ON for standard quoting
+					$commands[] = 'SET QUOTED_IDENTIFIER ON';
+					break;
+
+				case 'sqlite':
+					$dsn = $type . ':' . $this->database_file;
+					$this->username = null;
+					$this->password = null;
+					break;
+			}
+
+			if (
+				in_array($type, array('mariadb', 'mysql', 'pgsql', 'sybase', 'mssql')) &&
+				$this->charset
+			)
+			{
+				$commands[] = "SET NAMES '" . $this->charset . "'";
+			}
+
+			$this->pdo = new PDO(
+				$dsn,
+				$this->username,
+				$this->password,
+				$this->option
+			);
+
+			foreach ($commands as $value)
+			{
+				$this->pdo->exec($value);
+			}
+		}
+		catch (PDOException $e) {
+			throw new Exception($e->getMessage());
+		}
+	}
+
+	public function query($query)
+	{
+		if ($this->debug_mode)
+		{
+			echo $query;
+
+			$this->debug_mode = false;
+
+			return false;
+		}
+
+		$this->logs[] = $query;
+
+		return $this->pdo->query($query);
+	}
+
+	public function exec($query)
+	{
+		if ($this->debug_mode)
+		{
+			echo $query;
+
+			$this->debug_mode = false;
+
+			return false;
+		}
+
+		$this->logs[] = $query;
+
+		return $this->pdo->exec($query);
+	}
+
+	public function quote($string)
+	{
+		return $this->pdo->quote($string);
+	}
+
+	protected function table_quote($table)
+	{
+		return '"' . $this->prefix . $table . '"';
+	}
+
+	protected function column_quote($string)
+	{
+		preg_match('/(\(JSON\)\s*|^#)?([a-zA-Z0-9_]*)\.([a-zA-Z0-9_]*)/', $string, $column_match);
+
+		if (isset($column_match[ 2 ], $column_match[ 3 ]))
+		{
+			return '"' . $this->prefix . $column_match[ 2 ] . '"."' . $column_match[ 3 ] . '"';
+		}
+
+		return '"' . $string . '"';
+	}
+
+	protected function column_push(&$columns)
+	{
+		if ($columns == '*')
+		{
+			return $columns;
+		}
+
+		if (is_string($columns))
+		{
+			$columns = array($columns);
+		}
+
+		$stack = array();
+
+		foreach ($columns as $key => $value)
+		{
+			if (is_array($value))
+			{
+				$stack[] = $this->column_push($value);
+			}
+			else
+			{
+				preg_match('/([a-zA-Z0-9_\-\.]*)\s*\(([a-zA-Z0-9_\-]*)\)/i', $value, $match);
+
+				if (isset($match[ 1 ], $match[ 2 ]))
+				{
+					$stack[] = $this->column_quote( $match[ 1 ] ) . ' AS ' . $this->column_quote( $match[ 2 ] );
+
+					$columns[ $key ] = $match[ 2 ];
+				}
+				else
+				{
+					$stack[] = $this->column_quote( $value );
+				}
+			}
+		}
+
+		return implode($stack, ',');
+	}
+
+	protected function array_quote($array)
+	{
+		$temp = array();
+
+		foreach ($array as $value)
+		{
+			$temp[] = is_int($value) ? $value : $this->pdo->quote($value);
+		}
+
+		return implode($temp, ',');
+	}
+
+	protected function inner_conjunct($data, $conjunctor, $outer_conjunctor)
+	{
+		$haystack = array();
+
+		foreach ($data as $value)
+		{
+			$haystack[] = '(' . $this->data_implode($value, $conjunctor) . ')';
+		}
+
+		return implode($outer_conjunctor . ' ', $haystack);
+	}
+
+	protected function fn_quote($column, $string)
+	{
+		return (strpos($column, '#') === 0 && preg_match('/^[A-Z0-9\_]*\([^)]*\)$/', $string)) ?
+
+			$string :
+
+			$this->quote($string);
+	}
+
+	protected function data_implode($data, $conjunctor, $outer_conjunctor = null)
+	{
+		$wheres = array();
+
+		foreach ($data as $key => $value)
+		{
+			$type = gettype($value);
+
+			if (
+				preg_match("/^(AND|OR)(\s+#.*)?$/i", $key, $relation_match) &&
+				$type == 'array'
+			)
+			{
+				$wheres[] = 0 !== count(array_diff_key($value, array_keys(array_keys($value)))) ?
+					'(' . $this->data_implode($value, ' ' . $relation_match[ 1 ]) . ')' :
+					'(' . $this->inner_conjunct($value, ' ' . $relation_match[ 1 ], $conjunctor) . ')';
+			}
+			else
+			{
+				preg_match('/(#?)([\w\.\-]+)(\[(\>|\>\=|\<|\<\=|\!|\<\>|\>\<|\!?~)\])?/i', $key, $match);
+				$column = $this->column_quote($match[ 2 ]);
+
+				if (isset($match[ 4 ]))
+				{
+					$operator = $match[ 4 ];
+
+					if ($operator == '!')
+					{
+						switch ($type)
+						{
+							case 'NULL':
+								$wheres[] = $column . ' IS NOT NULL';
+								break;
+
+							case 'array':
+								$wheres[] = $column . ' NOT IN (' . $this->array_quote($value) . ')';
+								break;
+
+							case 'integer':
+							case 'double':
+								$wheres[] = $column . ' != ' . $value;
+								break;
+
+							case 'boolean':
+								$wheres[] = $column . ' != ' . ($value ? '1' : '0');
+								break;
+
+							case 'string':
+								$wheres[] = $column . ' != ' . $this->fn_quote($key, $value);
+								break;
+						}
+					}
+
+					if ($operator == '<>' || $operator == '><')
+					{
+						if ($type == 'array')
+						{
+							if ($operator == '><')
+							{
+								$column .= ' NOT';
+							}
+
+							if (is_numeric($value[ 0 ]) && is_numeric($value[ 1 ]))
+							{
+								$wheres[] = '(' . $column . ' BETWEEN ' . $value[ 0 ] . ' AND ' . $value[ 1 ] . ')';
+							}
+							else
+							{
+								$wheres[] = '(' . $column . ' BETWEEN ' . $this->quote($value[ 0 ]) . ' AND ' . $this->quote($value[ 1 ]) . ')';
+							}
+						}
+					}
+
+					if ($operator == '~' || $operator == '!~')
+					{
+						if ($type != 'array')
+						{
+							$value = array($value);
+						}
+
+						$like_clauses = array();
+
+						foreach ($value as $item)
+						{
+							$item = strval($item);
+
+							if (preg_match('/^(?!(%|\[|_])).+(?<!(%|\]|_))$/', $item))
+							{
+								$item = '%' . $item . '%';
+							}
+
+							$like_clauses[] = $column . ($operator === '!~' ? ' NOT' : '') . ' LIKE ' . $this->fn_quote($key, $item);
+						}
+
+						$wheres[] = implode(' OR ', $like_clauses);
+					}
+
+					if (in_array($operator, array('>', '>=', '<', '<=')))
+					{
+						$condition = $column . ' ' . $operator . ' ';
+
+						if (is_numeric($value))
+						{
+							$condition .= $value;
+						}
+						elseif (strpos($key, '#') === 0)
+						{
+							$condition .= $this->fn_quote($key, $value);
+						}
+						else
+						{
+							$condition .= $this->quote($value);
+						}
+
+						$wheres[] = $condition;
+					}
+				}
+				else
+				{
+					switch ($type)
+					{
+						case 'NULL':
+							$wheres[] = $column . ' IS NULL';
+							break;
+
+						case 'array':
+							$wheres[] = $column . ' IN (' . $this->array_quote($value) . ')';
+							break;
+
+						case 'integer':
+						case 'double':
+							$wheres[] = $column . ' = ' . $value;
+							break;
+
+						case 'boolean':
+							$wheres[] = $column . ' = ' . ($value ? '1' : '0');
+							break;
+
+						case 'string':
+							$wheres[] = $column . ' = ' . $this->fn_quote($key, $value);
+							break;
+					}
+				}
+			}
+		}
+
+		return implode($conjunctor . ' ', $wheres);
+	}
+
+	protected function where_clause($where)
+	{
+		$where_clause = '';
+
+		if (is_array($where))
+		{
+			$where_keys = array_keys($where);
+			$where_AND = preg_grep("/^AND\s*#?$/i", $where_keys);
+			$where_OR = preg_grep("/^OR\s*#?$/i", $where_keys);
+
+			$single_condition = array_diff_key($where, array_flip(
+				array('AND', 'OR', 'GROUP', 'ORDER', 'HAVING', 'LIMIT', 'LIKE', 'MATCH')
+			));
+
+			if ($single_condition != array())
+			{
+				$condition = $this->data_implode($single_condition, '');
+
+				if ($condition != '')
+				{
+					$where_clause = ' WHERE ' . $condition;
+				}
+			}
+
+			if (!empty($where_AND))
+			{
+				$value = array_values($where_AND);
+				$where_clause = ' WHERE ' . $this->data_implode($where[ $value[ 0 ] ], ' AND');
+			}
+
+			if (!empty($where_OR))
+			{
+				$value = array_values($where_OR);
+				$where_clause = ' WHERE ' . $this->data_implode($where[ $value[ 0 ] ], ' OR');
+			}
+
+			if (isset($where[ 'MATCH' ]))
+			{
+				$MATCH = $where[ 'MATCH' ];
+
+				if (is_array($MATCH) && isset($MATCH[ 'columns' ], $MATCH[ 'keyword' ]))
+				{
+					$where_clause .= ($where_clause != '' ? ' AND ' : ' WHERE ') . ' MATCH ("' . str_replace('.', '"."', implode($MATCH[ 'columns' ], '", "')) . '") AGAINST (' . $this->quote($MATCH[ 'keyword' ]) . ')';
+				}
+			}
+
+			if (isset($where[ 'GROUP' ]))
+			{
+				$where_clause .= ' GROUP BY ' . $this->column_quote($where[ 'GROUP' ]);
+
+				if (isset($where[ 'HAVING' ]))
+				{
+					$where_clause .= ' HAVING ' . $this->data_implode($where[ 'HAVING' ], ' AND');
+				}
+			}
+
+			if (isset($where[ 'ORDER' ]))
+			{
+				$ORDER = $where[ 'ORDER' ];
+
+				if (is_array($ORDER))
+				{
+					$stack = array();
+
+					foreach ($ORDER as $column => $value)
+					{
+						if (is_array($value))
+						{
+							$stack[] = 'FIELD(' . $this->column_quote($column) . ', ' . $this->array_quote($value) . ')';
+						}
+						else if ($value === 'ASC' || $value === 'DESC')
+						{
+							$stack[] = $this->column_quote($column) . ' ' . $value;
+						}
+						else if (is_int($column))
+						{
+							$stack[] = $this->column_quote($value);
+						}
+					}
+
+					$where_clause .= ' ORDER BY ' . implode($stack, ',');
+				}
+				else
+				{
+					$where_clause .= ' ORDER BY ' . $this->column_quote($ORDER);
+				}
+			}
+
+			if (isset($where[ 'LIMIT' ]))
+			{
+				$LIMIT = $where[ 'LIMIT' ];
+
+				if (is_numeric($LIMIT))
+				{
+					$where_clause .= ' LIMIT ' . $LIMIT;
+				}
+
+				if (
+					is_array($LIMIT) &&
+					is_numeric($LIMIT[ 0 ]) &&
+					is_numeric($LIMIT[ 1 ])
+				)
+				{
+					if ($this->database_type === 'pgsql')
+					{
+						$where_clause .= ' OFFSET ' . $LIMIT[ 0 ] . ' LIMIT ' . $LIMIT[ 1 ];
+					}
+					else
+					{
+						$where_clause .= ' LIMIT ' . $LIMIT[ 0 ] . ',' . $LIMIT[ 1 ];
+					}
+				}
+			}
+		}
+		else
+		{
+			if ($where != null)
+			{
+				$where_clause .= ' ' . $where;
+			}
+		}
+
+		return $where_clause;
+	}
+
+	protected function select_context($table, $join, &$columns = null, $where = null, $column_fn = null)
+	{
+		preg_match('/([a-zA-Z0-9_\-]*)\s*\(([a-zA-Z0-9_\-]*)\)/i', $table, $table_match);
+
+		if (isset($table_match[ 1 ], $table_match[ 2 ]))
+		{
+			$table = $this->table_quote($table_match[ 1 ]);
+
+			$table_query = $this->table_quote($table_match[ 1 ]) . ' AS ' . $this->table_quote($table_match[ 2 ]);
+		}
+		else
+		{
+			$table = $this->table_quote($table);
+
+			$table_query = $table;
+		}
+
+		$join_key = is_array($join) ? array_keys($join) : null;
+
+		if (
+			isset($join_key[ 0 ]) &&
+			strpos($join_key[ 0 ], '[') === 0
+		)
+		{
+			$table_join = array();
+
+			$join_array = array(
+				'>' => 'LEFT',
+				'<' => 'RIGHT',
+				'<>' => 'FULL',
+				'><' => 'INNER'
+			);
+
+			foreach($join as $sub_table => $relation)
+			{
+				preg_match('/(\[(\<|\>|\>\<|\<\>)\])?([a-zA-Z0-9_\-]*)\s?(\(([a-zA-Z0-9_\-]*)\))?/', $sub_table, $match);
+
+				if ($match[ 2 ] != '' && $match[ 3 ] != '')
+				{
+					if (is_string($relation))
+					{
+						$relation = 'USING ("' . $relation . '")';
+					}
+
+					if (is_array($relation))
+					{
+						// For ['column1', 'column2']
+						if (isset($relation[ 0 ]))
+						{
+							$relation = 'USING ("' . implode($relation, '", "') . '")';
+						}
+						else
+						{
+							$joins = array();
+
+							foreach ($relation as $key => $value)
+							{
+								$joins[] = (
+									strpos($key, '.') > 0 ?
+										// For ['tableB.column' => 'column']
+										$this->column_quote($key) :
+
+										// For ['column1' => 'column2']
+										$table . '."' . $key . '"'
+								) .
+								' = ' .
+								$this->table_quote(isset($match[ 5 ]) ? $match[ 5 ] : $match[ 3 ]) . '."' . $value . '"';
+							}
+
+							$relation = 'ON ' . implode($joins, ' AND ');
+						}
+					}
+
+					$table_name = $this->table_quote($match[ 3 ]) . ' ';
+
+					if (isset($match[ 5 ]))
+					{
+						$table_name .= 'AS ' . $this->table_quote($match[ 5 ]) . ' ';
+					}
+
+					$table_join[] = $join_array[ $match[ 2 ] ] . ' JOIN ' . $table_name . $relation;
+				}
+			}
+
+			$table_query .= ' ' . implode($table_join, ' ');
+		}
+		else
+		{
+			if (is_null($columns))
+			{
+				if (is_null($where))
+				{
+					if (
+						is_array($join) &&
+						isset($column_fn)
+					)
+					{
+						$where = $join;
+						$columns = null;
+					}
+					else
+					{
+						$where = null;
+						$columns = $join;
+					}
+				}
+				else
+				{
+					$where = $join;
+					$columns = null;
+				}
+			}
+			else
+			{
+				$where = $columns;
+				$columns = $join;
+			}
+		}
+
+		if (isset($column_fn))
+		{
+			if ($column_fn == 1)
+			{
+				$column = '1';
+
+				if (is_null($where))
+				{
+					$where = $columns;
+				}
+			}
+			else
+			{
+				if (empty($columns))
+				{
+					$columns = '*';
+					$where = $join;
+				}
+
+				$column = $column_fn . '(' . $this->column_push($columns) . ')';
+			}
+		}
+		else
+		{
+			$column = $this->column_push($columns);
+		}
+
+		return 'SELECT ' . $column . ' FROM ' . $table_query . $this->where_clause($where);
+	}
+
+	protected function data_map($index, $key, $value, $data, &$stack)
+	{
+		if (is_array($value))
+		{
+			$sub_stack = array();
+
+			foreach ($value as $sub_key => $sub_value)
+			{
+				if (is_array($sub_value))
+				{
+					$current_stack = $stack[ $index ][ $key ];
+
+					$this->data_map(false, $sub_key, $sub_value, $data, $current_stack);
+
+					$stack[ $index ][ $key ][ $sub_key ] = $current_stack[ 0 ][ $sub_key ];
+				}
+				else
+				{
+					$this->data_map(false, preg_replace('/^[\w]*\./i', "", $sub_value), $sub_key, $data, $sub_stack);
+
+					$stack[ $index ][ $key ] = $sub_stack;
+				}
+			}
+		}
+		else
+		{
+			if ($index !== false)
+			{
+				$stack[ $index ][ $value ] = $data[ $value ];
+			}
+			else
+			{
+				if (preg_match('/[a-zA-Z0-9_\-\.]*\s*\(([a-zA-Z0-9_\-]*)\)/i', $key, $key_match))
+				{
+					$key = $key_match[ 1 ];
+				}
+
+				$stack[ $key ] = $data[ $key ];
+			}
+		}
+	}
+
+	public function select($table, $join, $columns = null, $where = null)
+	{
+		$column = $where == null ? $join : $columns;
+
+		$is_single_column = (is_string($column) && $column !== '*');
+		
+		$query = $this->query($this->select_context($table, $join, $columns, $where));
+
+		$stack = array();
+
+		$index = 0;
+
+		if (!$query)
+		{
+			return false;
+		}
+
+		if ($columns === '*')
+		{
+			return $query->fetchAll(PDO::FETCH_ASSOC);
+		}
+
+		if ($is_single_column)
+		{
+			return $query->fetchAll(PDO::FETCH_COLUMN);
+		}
+
+		while ($row = $query->fetch(PDO::FETCH_ASSOC))
+		{
+			foreach ($columns as $key => $value)
+			{
+				if (is_array($value))
+				{
+					$this->data_map($index, $key, $value, $row, $stack);
+				}
+				else
+				{
+					$this->data_map($index, $key, preg_replace('/^[\w]*\./i', "", $value), $row, $stack);
+				}
+			}
+
+			$index++;
+		}
+
+		return $stack;
+	}
+
+	public function insert($table, $datas)
+	{
+		$lastId = array();
+
+		// Check indexed or associative array
+		if (!isset($datas[ 0 ]))
+		{
+			$datas = array($datas);
+		}
+
+		foreach ($datas as $data)
+		{
+			$values = array();
+			$columns = array();
+
+			foreach ($data as $key => $value)
+			{
+				$columns[] = $this->column_quote(preg_replace("/^(\(JSON\)\s*|#)/i", "", $key));
+
+				switch (gettype($value))
+				{
+					case 'NULL':
+						$values[] = 'NULL';
+						break;
+
+					case 'array':
+						preg_match("/\(JSON\)\s*([\w]+)/i", $key, $column_match);
+
+						$values[] = isset($column_match[ 0 ]) ?
+							$this->quote(json_encode($value)) :
+							$this->quote(serialize($value));
+						break;
+
+					case 'boolean':
+						$values[] = ($value ? '1' : '0');
+						break;
+
+					case 'integer':
+					case 'double':
+					case 'string':
+						$values[] = $this->fn_quote($key, $value);
+						break;
+				}
+			}
+
+			$this->exec('INSERT INTO ' . $this->table_quote($table) . ' (' . implode(', ', $columns) . ') VALUES (' . implode($values, ', ') . ')');
+
+			$lastId[] = $this->pdo->lastInsertId();
+		}
+
+		return count($lastId) > 1 ? $lastId : $lastId[ 0 ];
+	}
+
+	public function update($table, $data, $where = null)
+	{
+		$fields = array();
+
+		foreach ($data as $key => $value)
+		{
+			preg_match('/([\w]+)(\[(\+|\-|\*|\/)\])?/i', $key, $match);
+
+			if (isset($match[ 3 ]))
+			{
+				if (is_numeric($value))
+				{
+					$fields[] = $this->column_quote($match[ 1 ]) . ' = ' . $this->column_quote($match[ 1 ]) . ' ' . $match[ 3 ] . ' ' . $value;
+				}
+			}
+			else
+			{
+				$column = $this->column_quote(preg_replace("/^(\(JSON\)\s*|#)/i", "", $key));
+
+				switch (gettype($value))
+				{
+					case 'NULL':
+						$fields[] = $column . ' = NULL';
+						break;
+
+					case 'array':
+						preg_match("/\(JSON\)\s*([\w]+)/i", $key, $column_match);
+
+						$fields[] = $column . ' = ' . $this->quote(
+								isset($column_match[ 0 ]) ? json_encode($value) : serialize($value)
+							);
+						break;
+
+					case 'boolean':
+						$fields[] = $column . ' = ' . ($value ? '1' : '0');
+						break;
+
+					case 'integer':
+					case 'double':
+					case 'string':
+						$fields[] = $column . ' = ' . $this->fn_quote($key, $value);
+						break;
+				}
+			}
+		}
+
+		return $this->exec('UPDATE ' . $this->table_quote($table) . ' SET ' . implode(', ', $fields) . $this->where_clause($where));
+	}
+
+	public function delete($table, $where)
+	{
+		return $this->exec('DELETE FROM ' . $this->table_quote($table) . $this->where_clause($where));
+	}
+
+	public function replace($table, $columns, $search = null, $replace = null, $where = null)
+	{
+		if (is_array($columns))
+		{
+			$replace_query = array();
+
+			foreach ($columns as $column => $replacements)
+			{
+				foreach ($replacements as $replace_search => $replace_replacement)
+				{
+					$replace_query[] = $column . ' = REPLACE(' . $this->column_quote($column) . ', ' . $this->quote($replace_search) . ', ' . $this->quote($replace_replacement) . ')';
+				}
+			}
+
+			$replace_query = implode(', ', $replace_query);
+			$where = $search;
+		}
+		else
+		{
+			if (is_array($search))
+			{
+				$replace_query = array();
+
+				foreach ($search as $replace_search => $replace_replacement)
+				{
+					$replace_query[] = $columns . ' = REPLACE(' . $this->column_quote($columns) . ', ' . $this->quote($replace_search) . ', ' . $this->quote($replace_replacement) . ')';
+				}
+
+				$replace_query = implode(', ', $replace_query);
+				$where = $replace;
+			}
+			else
+			{
+				$replace_query = $columns . ' = REPLACE(' . $this->column_quote($columns) . ', ' . $this->quote($search) . ', ' . $this->quote($replace) . ')';
+			}
+		}
+
+		return $this->exec('UPDATE ' . $this->table_quote($table) . ' SET ' . $replace_query . $this->where_clause($where));
+	}
+
+	public function get($table, $join = null, $columns = null, $where = null)
+	{
+		$column = $where == null ? $join : $columns;
+
+		$is_single_column = (is_string($column) && $column !== '*');
+
+		$query = $this->query($this->select_context($table, $join, $columns, $where) . ' LIMIT 1');
+
+		if ($query)
+		{
+			$data = $query->fetchAll(PDO::FETCH_ASSOC);
+
+			if (isset($data[ 0 ]))
+			{
+				if ($is_single_column)
+				{
+					return $data[ 0 ][ preg_replace('/^[\w]*\./i', "", $column) ];
+				}
+				
+				if ($column === '*')
+				{
+					return $data[ 0 ];
+				}
+
+				$stack = array();
+
+				foreach ($columns as $key => $value)
+				{
+					if (is_array($value))
+					{
+						$this->data_map(0, $key, $value, $data[ 0 ], $stack);
+					}
+					else
+					{
+						$this->data_map(0, $key, preg_replace('/^[\w]*\./i', "", $value), $data[ 0 ], $stack);
+					}
+				}
+
+				return $stack[ 0 ];
+			}
+			else
+			{
+				return false;
+			}
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public function has($table, $join, $where = null)
+	{
+		$column = null;
+
+		$query = $this->query('SELECT EXISTS(' . $this->select_context($table, $join, $column, $where, 1) . ')');
+
+		if ($query)
+		{
+			return $query->fetchColumn() === '1';
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public function count($table, $join = null, $column = null, $where = null)
+	{
+		$query = $this->query($this->select_context($table, $join, $column, $where, 'COUNT'));
+
+		return $query ? 0 + $query->fetchColumn() : false;
+	}
+
+	public function max($table, $join, $column = null, $where = null)
+	{
+		$query = $this->query($this->select_context($table, $join, $column, $where, 'MAX'));
+
+		if ($query)
+		{
+			$max = $query->fetchColumn();
+
+			return is_numeric($max) ? $max + 0 : $max;
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public function min($table, $join, $column = null, $where = null)
+	{
+		$query = $this->query($this->select_context($table, $join, $column, $where, 'MIN'));
+
+		if ($query)
+		{
+			$min = $query->fetchColumn();
+
+			return is_numeric($min) ? $min + 0 : $min;
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public function avg($table, $join, $column = null, $where = null)
+	{
+		$query = $this->query($this->select_context($table, $join, $column, $where, 'AVG'));
+
+		return $query ? 0 + $query->fetchColumn() : false;
+	}
+
+	public function sum($table, $join, $column = null, $where = null)
+	{
+		$query = $this->query($this->select_context($table, $join, $column, $where, 'SUM'));
+
+		return $query ? 0 + $query->fetchColumn() : false;
+	}
+
+	public function action($actions)
+	{
+		if (is_callable($actions))
+		{
+			$this->pdo->beginTransaction();
+
+			$result = $actions($this);
+
+			if ($result === false)
+			{
+				$this->pdo->rollBack();
+			}
+			else
+			{
+				$this->pdo->commit();
+			}
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	public function debug()
+	{
+		$this->debug_mode = true;
+
+		return $this;
+	}
+
+	public function error()
+	{
+		return $this->pdo->errorInfo();
+	}
+
+	public function last_query()
+	{
+		return end($this->logs);
+	}
+
+	public function log()
+	{
+		return $this->logs;
+	}
+
+	public function info()
+	{
+		$output = array(
+			'server' => 'SERVER_INFO',
+			'driver' => 'DRIVER_NAME',
+			'client' => 'CLIENT_VERSION',
+			'version' => 'SERVER_VERSION',
+			'connection' => 'CONNECTION_STATUS'
+		);
+
+		foreach ($output as $key => $value)
+		{
+			$output[ $key ] = $this->pdo->getAttribute(constant('PDO::ATTR_' . $value));
+		}
+
+		return $output;
+	}
+}
+?>
\ No newline at end of file
diff --git a/upload.php b/upload.php
index 618b041..ed7b566 100644
--- a/upload.php
+++ b/upload.php
@@ -89,6 +89,7 @@
 			    $re_data = array("linkurl" => $img_url,width => $img_width,"height" => $img_height,"status" => 'ok');
 			    //返回json格式
 			    echo json_encode($re_data);
+			    recordImageInfo($img_name , $dir_name, $img_url);// 记录文件原始名称，文件路径和文件url
 			    exit;
 		    }
 		    //没有上传成功
@@ -115,4 +116,20 @@
 			return $udir;
 		}
 	}
+
+	// 记录图片信息并初始化数据库（如果不存在）
+	function recordImageInfo($rawname, $path, $url) {
+		global $config;
+		include_once("./medoo.php");
+		$db = new medoo([
+			'database_type' => 'sqlite',
+			'database_file' => $config['dbfile']
+		]);
+		$ret = $db->query("SELECT count(*) FROM sqlite_master WHERE type='table' AND name='pictures'")->fetchAll();
+		if ($ret[0][0] == 0) {
+			$db->exec("CREATE TABLE [pictures] ([id] INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, [raw] VARCHAR, [path] VARCHAR, [url] TEXT)");
+			$db->exec("CREATE INDEX [url] ON [pictures] ([url])");
+		}
+		$db->exec("insert into pictures (raw, path, url) values (".$db->pdo->quote($rawname).",\"$path\",\"$url\")");
+	}
 ?>
\ No newline at end of file