How can I check value to be inserted in mysql database - php

Question

Please I'm a newbie in php and mysql I want you to help me on how to check if value to be inserted into a database is greater than or lesser than, if greater than it should insert pass, thanks.
this the code
$query="select * from ats_question";
$rs=mysql_query("select * from ats_question where test_id=$tid",$cn) or die(mysql_error());
if(!isset($_SESSION[qn]))
{
$_SESSION[qn]=0;
mysql_query("delete from ats_useranswer where sess_id='" . session_id() ."'") or die(mysql_error());
$_SESSION[trueans]=0;
}
else
{
if($submit1=='Next Question' && isset($ans))
{
mysql_data_seek($rs,$_SESSION[qn]);
$row= mysql_fetch_row($rs);
mysql_query("insert into ats_useranswer(sess_id, test_id, que_des, ans1,ans2,ans3,ans4,
true_ans,your_ans)values('".session_id()."', $tid,'$row[2]','$row[3]','$row[4]','$row[5]', '$row[6]','$row[7]','$ans')") or die(mysql_error());
if($ans==$row[7])
{
$_SESSION[trueans]=$_SESSION[trueans]+1;
}
$_SESSION[qn]=$_SESSION[qn]+1;
}
else if($submit=='Get Result' && isset($ans))
{
mysql_data_seek($rs,$_SESSION[qn]);
$row= mysql_fetch_row($rs);
mysql_query("insert into ats_useranswer(sess_id, test_id, que_des, ans1,ans2,ans3,ans4,true_ans,
your_ans) values
('".session_id()."', $tid,'$row[2]','$row[3]','$row[4]','$row[5]', '$row[6]','$row[7]','$ans')") or die(mysql_error());
if($ans==$row[7])
{
$_SESSION[trueans]=$_SESSION[trueans]+1;
}
echo "<h1 class=head1> Result</h1>";
$_SESSION[qn]=$_SESSION[qn]+1;
echo "<Table align=center><tr class=tot><td>Total Question<td> $_SESSION[qn]";
echo "<tr class=tans><td>True Answer<td>".$_SESSION[trueans];
$w=$_SESSION[qn]-$_SESSION[trueans];
echo "<tr class=fans><td>Wrong Answer<td> ". $w;
echo "</table>";
mysql_query("insert into ats_result(login,test_id,grade,score) values
('$login',$tid,grade,$_SESSION[trueans])")
or die(mysql_error());
echo "<h1 align=center><a href=ats_review.php> Review Question</a> </h1>";
unset($_SESSION[qn]);
unset($_SESSION[sid]);
unset($_SESSION[tid]);
unset($_SESSION[trueans]);
exit;
}
}
$rs=mysql_query("select * from ats_question where test_id=$tid",$cn) or die(mysql_error());
if($_SESSION[qn]>mysql_num_rows($rs)-1)
{
unset($_SESSION[qn]);
echo "<h1 class=head1>Some Error Occured</h1>";
session_destroy();
echo "Please <a href=index.php> Start Again</a>";
exit;
}
mysql_data_seek($rs,$_SESSION[qn]);
$row= mysql_fetch_row($rs);
echo "<div align=\"center\" class=\"style2\"><strong> Ats Examination </strong></div>";
echo "<div id=\"\"></div>";
echo"<p id=\"note\"></p>";
echo "<form name=myfm id=myfm1 method=post action=ats_exam.php>";
echo "<table width=100%> <tr> <td width=30> <td> <table border=0>";
$n=$_SESSION[qn]+1;
echo "<tR><td><span class=style2>Que ". $n .": $row[2]</style>";
echo "<tr><td class=style6><input type=radio name=ans value=1>$row[3]";
echo "<tr><td class=style6> <input type=radio name=ans value=2>$row[4]";
echo "<tr><td class=style6><input type=radio name=ans value=3>$row[5]";
echo "<tr><td class=style6><input type=radio name=ans value=4>$row[6]";
if($_SESSION[qn]<mysql_num_rows($rs)-1)
echo "<tr><td><input type=submit name=submit1 value='Next Question'> </form>";
echo "<tr><td><input type=submit name=submit value='Get Result'></form>";
echo "</table></table>";
?>
i want to check if the trueans is greater than 15 it should insert pass if not fail in the grade value
mysql_query("insert into ats_result(login,test_id,grade,score) values
('$login',$tid,grade,$_SESSION[trueans])")

Answer 1

Thanks I have finally get solution to my question this what my code now look like mysql_query("insert into ats_result(login,test_id,score,grade)values('$login','$tid',$_SESSION[trueans],IF($_SESSION[trueans]>=10,'Pass','Fail')"); thanks all for the response and challenges throw to me.