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刚开始因为习惯于ASP格式的写法,总是在这些方面出现问题,自己还总是找不到问题所在,这就提醒了自己,在写代码的时候一定要认真,不能粗心地老是少个“;”或者字母大小写不分,要不然很可能找半天都找不到错误。mysql ---------- php debug ----------
Server=localhost;DataBase=mysql;UserID=root;PassWord=123456
resource(5) of type (mysql result)
Output completed (1 sec consumed) - Normal Termination
<P><?php
class DBCLS
{
#----------------------------------------------------
# 数据库掌握类 DBCLS
# 作者:yms
# yms541@yahoo.com.cn
# 2005-5-30
# 2005-5-31
# php_v5.0.1
# Editplus Text Editer v2.12(76)
#----------------------------------------------------
//debug 调试开关
var $debug = true;
//debuginfo 毛病信息,调试信息
var $debuginfo = "debug informations:\r\n";
//db_server MySQL主机地址
var $db_server;
//db_name 数据库名
var $db_name;
//db_user 数据库用户名
var $db_user;
//db_passwd 暗码
var $db_passwd;
//db_links 数据库毗连
var $db_link;
//db_query_sql SQL语句
var $db_query_sql = "show tables";
//db_recordset 了局集,纪录集
var $db_recordset;
//ready 停当开关
var $conntstr_ready = false;
var $link_ready = false;
var $db_ready = false;
//set or return Connection String 前往,或设定毗连字符串
function connection_string($connstr="")
{
if("" == $connstr)
{
//假如没有参数传入,前往已有的毗连字符
return "Server=".$this->db_server.";DataBase=".$this->db_name.";UserID=".$this->db_user.";PassWord=".$this->db_passwd;
}
else
{
//不然,解析毗连字符,初始化变量
preg_match_all("|([a-zA-Z0-9]*)=([a-zA-Z0-9]*);*|", $connstr, $tmparr, PREG_PATTERN_ORDER);
$this->db_server = (strtolower($tmparr[1][0]) == "server")?$tmparr[2][0]:"";
$this->db_name = (strtolower($tmparr[1][1]) == "database")?$tmparr[2][1]:"";
$this->db_user = (strtolower($tmparr[1][2]) == "userid")?$tmparr[2][2]:"";
$this->db_passwd = (strtolower($tmparr[1][3]) == "password")?$tmparr[2][3]:"";
//var_dump($tmparr);
if("" == $this->db_server or "" == $this->db_name or "" == $this->db_user or "" == $this->db_passwd)
$this->conntstr_ready = false; //假如有个中一个以上变量被赋以空字符串"",筹办未停当
else
$this->conntstr_ready = true;
return $this->conntstr_ready;
}
}
//毗连数据库,前往毗连对象
function connect()
{
if(!$this->conntstr_ready)
{
if($this->debug){$this->debuginfo .= "毗连字符串有效!\r\n";}
return $this->link_ready;
}
if($this->db_link = @mysql_connect($this->db_server, $this->db_user, $this->db_passwd))
{
$this->link_ready = true;
return $this->link_ready;
}
}
//选择数据库
function select($db = "")
{
if(!$this->db_link)
{
if($this->debug){$this->debuginfo .= "没有可用的数据库毗连!\r\n";}
$this->db_ready = false;
}
if("" == $db)
{
if(mysql_select_db($this->db_name))
$this->db_ready = true;
}
if(mysql_select_db($this->db_name = $db))
$this->db_ready = true;
return $this->db_ready;
}
//履行查询
function execute($SQL = "")
{
if("" != $SQL)
{
$this->db_query_sql = $SQL;
//if($this->debug){$this->debuginfo .= "SQL is null!\r\n";}
//return false;
}
if("" == $this->db_query_sql)
{
if($this->debug){$this->debuginfo .= "SQL is null!\r\n";}
return false;
}
$this->db_recordset = mysql_query($this->db_query_sql);
return true;
}
}
$dbmy = new DBCLS(); //创立一个DBCLS对象
if(!$dbmy->connection_string("Server=localhost;DataBase=mysql;UserID=root;PassWord=123456"))//初始化DBCLS对象dbmy
print $dbmy->debuginfo; //初始化掉败,输入毛病信息
else
print $dbmy->connection_string(); //初始化胜利,输入毗连字符串
print "\r\n";
if(!($dbmy->connect()) or !($dbmy->select())) //假如毗连数据库,或选择数据库掉败
print $dbmy->debuginfo; //输入失足信息
//$dbmy->db_query_sql = "select * from user";
if($dbmy->execute()) //履行查询指令
{ //假如不失足
var_dump($dbmy->db_recordset);//输入前往的了局集
}
?>
输入信息:
---------- php debug ----------
Server=localhost;DataBase=mysql;UserID=root;PassWord=123456
resource(5) of type (mysql result)
Output completed (1 sec consumed) - Normal Termination
学会了生成静态网页,现在你应该接触一下XML了,恩,XML也了解了,那么AJAX你也得接触接触吧?AJAX完了....然后... |
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