从一个不错的留言本弄的mysql数据库操作类,初学php的朋友可以参考下复制代码代码如下:php
show('Can not connect to MySQL server');return false;}if($dbname) {$this->select_db($dbname);}if($this->version() > '4.1' && $dbcharset) {$this->query("SET NAMES '".$dbcharset."'");}return true;}function select_db($dbname) {return mysql_select_db($dbname);}function fetch_array($query, $result_type = MYSQL_ASSOC) {return @mysql_fetch_array($query, $result_type);}function query($sql, $type = '') {if(!($query = mysql_query($sql))) $this->show('MySQL Query Error', $sql);$this->querynum++;return $query;}function affected_rows() {return mysql_affected_rows();}function result($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($query);}function insert_id() {return mysql_insert_id();}function fetch_row($query) {return mysql_fetch_row($query);}function version() {return mysql_get_server_info();}function close() {return mysql_close();}function error() {return mysql_error();}function show($message = '', $sql = '') {if(!$sql) echo $message;else echo $message.''.$sql.''.$this->error();}}class page extends mysql{function pagination($sql,$maxnum,$page,$maxpages,$pagepre,$ext=''){global $sum,$stail,$link,$lmid,$ltail,$curpage;//$ext='&class=3'$SELF = $_SERVER['PHP_SELF'];$query = $this->query($sql);$rows = $this->fetch_array($query,MYSQL_NUM);$totalrows = $rows[0];$totalpages = ceil($totalrows/$maxnum);$startnum = ($page - 1)*$maxnum;$string = $sum.$totalrows.$stail.$sum.$page."/".$totalpages.$stail;if($page != 1){$string .= $link.$SELF."?page=1".$ext.$lmid."|‹".$ltail;$string .= $link.$SELF.'?page='.($page - 1).$ext.$lmid."‹‹".$ltail;}if($maxpages>=$totalpages){$pgstart = 1;$pgend = $totalpages;}elseif(($page-$pagepre-1+$maxpages)>$totalpages){$pgstart = $totalpages - $maxpages + 1;$pgend = $totalpages;}else{$pgstart=(($page $pgend=(($pgstart==1)?$maxpages:($pgstart+$maxpages-1));}for($pg=$pgstart;$pg if($pg == $page){$string .= $curpage.$SELF."?page=".$pg.$ext.$lmid.$pg.$ltail;}else $string .= $link.$SELF."?page=".$pg.$ext.$lmid.$pg.$ltail;}if($page != $totalpages){$string .= $link.$SELF.'?page='.($page + 1).$ext.$lmid."››".$ltail;$string .= $link.$SELF.'?page='.$totalpages.$ext.$lmid."›|".$ltail;}return $string;}}function html($str,$allowhtml=0){$str = get_magic_quotes_gpc()?$str:addslashes($str);if(!$allowhtml){$str = htmlspecialchars($str);}return $str;}function dehtml($str,$allowhtml=0){$str = stripslashes($str);if(!$allowhtml){$str = nl2br($str);}return $str;}function deip($str){$arr = explode('.',$str);$str = $arr[0].'.'.$arr[1].'.'.$arr[2].'.*';return $str;}function setting($login=false){global $db,$mydbpre;if($login) $sql = "select * from {$mydbpre}setting";else $sql = "select * from {$mydbpre}setting where keyword != 'username' and keyword != 'password'";$query = $db->query($sql);while($row = $db->fetch_array($query)){$arr[$row['keyword']] = $row['val'];if($row['keyword'] == 'name') $arr['title'] = $row['val'].' - Powered by PHPfans';}return $arr;}function checkcontent($content){global $db,$mydbpre,$mearr;$arrword = $arrip = array();$sql = "select * from {$mydbpre}ban where b_type != 0";$query = $db->query($sql);while($row = $db->fetch_array($query)){if($row['b_type'] == 1) $arrword[] = $row['b_val'];elseif($row['b_type'] == 2) $arrip[] = $row['b_reval'];}foreach($arrip as $value){$value = preg_quote($value,'/');$value = str_replace('\*','\d{1,3}',$value);if(preg_match('/^('.$value.')$/',$_SERVER['REMOTE_ADDR'])){showmessage($mearr[8],'index.php');}}foreach($arrword as $val){$val = preg_quote($val,'/');if(preg_match('/'.$val.'/',$content)){showmessage($mearr[7],'index.php');}}}function replaceword($content){global $db,$mydbpre;$sql = "select * from {$mydbpre}ban where b_type = 0";$query = $db->query($sql);while($row = $db->fetch_array($query)){$content = str_replace($row['b_val'],$row['b_reval'],$content);}return $content;}function showadmin($message,$referer=''){$str = '';if($referer != '') $str .= '';$str .= '信息提示'.$message;if($referer != '') $str .= '如果你的页面没有跳转,请点这里';$str .= '';echo $str;exit;}function showmessage($message,$referer=''){global $setting,$db;$start = gettime();echo nbsp;HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">php爱好者留言簿_提示信息EOT;if($referer != '') echo '';echo EOT;require_once('header.html');echophp爱好者留言簿 提示信息{$message}EOT;if($referer != ''){echo如果您的浏览器没有自动跳转,请点击这里EOT;}require_once('footer.html');echo EOT;exit;}function gettime(){$t = explode(" ",microtime());return $t[1] + $t[0];}function checklogin($exit=true){if(!isset($_COOKIE['islogin']) || $_COOKIE['islogin'] != 1){if($exit) {echo "请先登陆,谢谢。";exit;}}else setcookie('islogin',1,time()+60*20);}?>http://www.bkjia.com/PHPjc/318435.html www.bkjia.com true http://www.bkjia.com/PHPjc/318435.html TechArticle从一个不错的留言本弄的mysql数据库操作类,初学php的朋友可以参考下 复制代码 代码如下: ?php classmysql{ var$querynum=0; functionconnect($dbhost,$dbu...
