<body bgcolor=#ffffdd> 
<b>database</b>: test <b>table</b>: student, subject, regist<br> 
<form action=''> 
<textarea name=q rows=4 cols=90 wrap=off> 
select * from student join regist  
where student.sid = regist.sid 
order by regist.ryear,regist.sid 
</textarea> 
<input type=submit value=query> 
</form> 
<? 
$c = mysql_connect("127.0.0.1:3306","admin","p"); 
if (isset($_REQUEST["q"]) && strlen($_REQUEST["q"]) > 5) { 
  $q = stripslashes($_REQUEST["q"]); 
  $result = mysql_db_query("test",$q); 
} else { 
  $q = "select * from student"; 
  $result = mysql_db_query("test",$q); 
} 
while($row = mysql_fetch_array($result)) { 
 for($i=0;$i<count($row);$i++) 
   if(isset($row[$i])) echo $row[$i]."_"; 
 echo "<hr>"; 
} 
mysql_close($c); 
?> 
 
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