<?php
class MYSQL
{
var $no_rows=0, $row=array();
var $no_fields=0, $field=array();

//#-----------------------------------------------------------------
//#---- FUNCTION :: MYSQL($p_host, $p_user, $p_passwd, $p_db="mysql")
//#---- DESCRIPTION ::
//#---- Initialize class with information to access server
//#---- No connection will be made at this point.
//#---- INPUT ::
//#---- p_host : server hostname|IP address
//#---- p_user : user name to log into server
//#---- p_passwd : passwd for the user
//#---- p_db : database to be used
//#---- OUTPUT ::
//#---- none
//#-----------------------------------------------------------------
function MYSQL($p_host, $p_user, $p_passwd, $p_db="mysql")
{
$this->sql_host = $p_host;
$this->sql_user= $p_user;
$this->sql_passwd = $p_passwd;
$this->sql_db = $p_db;
} // end MYSQL

//#-----------------------------------------------------------------
//#---- FUNCTION :: RunDB($statement, $exp_result = "")
//#---- DESCRIPTION ::
//#---- Execute a MySQL statement in a non-persistant mode
//#---- INPUT ::
//#---- p_statement : statement to be executed
//#---- exp_result : is result expected?
//#---- value 1 (default): result stored in row array
//#---- value 0: result not stored in row array
//#---- OUTPUT ::
//#---- return "OK" : succesful
//#---- return err_message from mysql_connect
//#---- exp_result==1: additional result stored into array row
//#---- no_row contains no. of record retrieved
//#---- row[recno][ "field" ] contains value of recno record
//#---- field["fieldname"] contains the field list
//#-----------------------------------------------------------------
function RunDB($p_statement, $exp_result = 1)
{
//--- 连接到数据库
$link=mysql_connect($this->sql_host, $this->sql_user, $this->sql_passwd);
if (!$link)
return sprintf("error connecting to host %s, by user %s",
$this->sql_host, $this->sql_user) ;
//--- 选择数据库
if (!mysql_select_db($this->sql_db, $link))
{ $err_msg=sprintf("Error in selecting %s database",
$this->sql_db);
$err_msg .= sprintf("error:%d %s", mysql_errno($link),
mysql_error($link));
return $err_msg;
}
//--- 执行查询
if (!($this->result=mysql_query($p_statement, $link)))
{ $err_msg=sprintf("Error in selecting %s database\n",
$this->sqldb);
$err_msg .= sprintf("\terror:%d\t\nerror message %s",
mysql_errno($link), mysql_error($link));
return $err_msg;
}
//--- Organize the result
if (!preg_match("/^\s*(delete|insert|replace|update)/i", $p_statement))
{if ($exp_result == 1)
{ $this->no_rows = mysql_num_rows($this->result);
$this->GroupResult();
}}
//--- SUCCESS RETURN
return OK;
} // end function RunDB


//#-----------------------------------------------------------------
//#---- FUNCTION :: GroupResult( )
//#---- DESCRIPTION ::
//#---- To group the raw result retrieved in an associative array
//#---- A query has to be made using RunDB prior to this execution
//#---- The handle is storedin $result
//#---- INPUT :: None
//#---- OUTPUT :
//#---- return none
//#---- additional result stored into array
//#---- no_row, row[recno]["field"] = value
//#---- no_field, field["fieldname"]
//#-----------------------------------------------------------------
function GroupResult()
{
//--- Get RESULT
$is_header = FALSE;
for ( $recno = 0; $recno < $this->no_rows; $recno ++ )
{ $row = mysql_fetch_object($this->result);
//--- Get Field List
if ( ! $is_header )
{ $no_fields = 0;
$t_row = $row;
while ( $item = each($t_row) )
{ $this->field[$no_fields] = $item["key"];
$no_fields ++;
}
$this->no_fields = $no_fields;
$is_header = TRUE;
}
//---- GET DATA
while ( $item = each($row))
$this->row[$recno][$item["key"]] = $item["value"];
}
//--- END CONNECTION
mysql_free_result($this->result);
} // GroupResult

//#-----------------------------------------------------------------
//#---- FUNCTION :: ShowHTML($p_table="", $p_header = "", $p_cell = "")
//#---- DESCRIPTION ::
//#---- To return the result in HTML Table format
//#---- INPUT ::
//#---- p_table : HTML <Table> format
//#---- p_header : First row format
//#---- p_cell : Individual cell format
//#---- OUTPUT ::
//#---- "OK" : succesful
//#---- err_message from mysql_connect
//#-----------------------------------------------------------------

function ShowHTML($p_table="", $p_header="", $p_cell="" )
{
//--- DEFAULT OPTION
$p_table=($p_table=="")?"BGCOLOR=#BB9999 BORDER=1": $p_table;
$p_header=($p_header=="")? "BGCOLOR=#9999BB" : $p_header;
$p_cell=($p_cell=="")?"BGCOLOR=#99BB99":$p_cell;
//--- DISPLAY TABLE
echo "<TABLE ".$p_table.">";
//--- DISPLAY HEADER LINE
echo "<TR ".$p_header.">";
echo "<TD>recno";
for ($i = 0; $i < $this->no_fields; $i ++)
printf("<TD>%s", $this->field[$i]);
//--- DISPLAY DATA
for ( $i = 0; $i < $this->no_rows; $i ++)
{ echo "<TR $p_cell>";
printf("<TD>%-3s", $i);
for ($f = 0; $f < $this->no_fields; $f ++)
{ $f_name = $this->field[$f];
$f_value = $this->row[$i][$f_name];
if ( $f_value=="" )
$f_value="&nbsp;";
printf("<TD>%s", $f_value);
}
}
//--- THE END
echo "</TABLE>";
} // ShowHTML
function ShowXml($table,$no)
{
$sql="slect * from `$table` LIMIT 0 , $no";
RunDb($sql);
for ($i = 0; $i < $mysql->no_rows; $i ++)
{
echo "Record No: " . ($i + 1) ."<HR>";
for ($j = 0; $j < $mysql->no_fields; $j ++)
{
$field_name = $mysql->field[$j];
echo "Field: ".$field_name." ----- Value: ".
$mysql->row[$i][$field_name]."<BR>";
}
}
}

} // end class MYSQL
?&gt;

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>

<body>
<form id="form1" name="form1" method="post" action="mysqlxml.php">
<label>请选择生成XML的表
<select name="table" id="table">
<option value="教师">教师</option>
<option value="学生">学生</option>
<option value="助教">助教</option>
<option value="教师授课">教师授课</option>
<option value="课程">课程</option>
<option value="成绩">成绩</option>
<option value="选课">选课</option>
</select>
</label>
<label>
<input type="submit" name="Submit" value="提交" />
</label>
</form>
</body>
</html>

&lt;?php
$table=$_POST['table'];
include("class_mysql.php");
$mysql=new MYSQL("localhost", "pjq", "pjq", "sys");
$status = $mysql->RunDb("select * from $table");
if ($status != "OK")
{ echo "<HR>DB Error: $status.<HR>";
die;
}
header("Content-Type: text/xml");
echo"&lt;?xml version=\"1.0\" encoding=\"GB2312\"?&gt;\n";
echo"<".$table.">\n";
for($i = 0; $i < $mysql->no_rows; $i ++)
{
echo"<item>\n";
for ($j = 0; $j < $mysql->no_fields; $j ++)
{
$field_name = $mysql->field[$j];
echo "<".$field_name.">".$mysql->row[$i][$field_name]."</".$field_name.">\n";

}
echo"</item>\n";
}

echo"</".$table.">\n";

?&gt;