mysql时间函数使用从一个不错的留言本弄的mysql数据库操作类

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Libérer： 2016-07-29 08:37:07

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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:

class mysql{
    var $querynum = 0;
    function connect($dbhost, $dbuser, $dbpw, $dbname = '',$dbcharset='') {
        if(!@mysql_connect($dbhost, $dbuser, $dbpw)) {
            $this->show('Can not connect to MySQL server');
            return false;
        }
        if($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');
    echo

php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);
}
?>

以上就介绍了mysql时间函数使用从一个不错的留言本弄的mysql数据库操作类，包括了mysql时间函数使用方面的内容，希望对PHP教程有兴趣的朋友有所帮助。