コードは、大学のコースの記述式クイズです。私がやりたいことは、データベースに保存されている回答と学生の回答を一致させることです。一致する回答 (またはキーワード) はポイントとしてカウントされます。合計点数がわかりずらいです。preg_match() の結果はすでに正しいものです。コードは次のとおりです。
<?php
ini_set('display_errors',1);
error_reporting(E_ALL ^ E_NOTICE);
include("dbconn.php");
session_start();
if(isset($_POST['Submit']))
{
$id = $_SESSION['tf1_sid'];
$qno = $_POST['q_no'];
?>
<head></head>
<body>
<form id="form1" name="form1" method="post" action="">
<table width="590" border="1" cellpadding="2" align="center">
<?php
//db query to obtain i_id - to insert to RESULT table
$sql_i = "SELECT i_id FROM ins_stud WHERE s_id = '$id'";
$query_i = mysql_query($sql_i) or die("MySQL Error: " . mysql_error());
$data_i = mysql_fetch_assoc($query_i);
$ins_id = $data_i['i_id'];
//echo $ins_id;
//$correct = 0;
$total = 0;
$arr_ind = 1;
$atext = array(1);
$ans = array(1);
for($i=1;$i<=$qno;$i++){
$repStr = str_replace("1", $i, "answer_1");
//echo "Question ". $i .": ". $repStr;
$ans[] = $_POST[$repStr];
//echo $ans;
$sql_check = "SELECT q_ans FROM question WHERE q_id='$i'";
$query_ch = mysql_query($sql_check) or die("MySQL Error: " . mysql_error());
$data_ch = mysql_fetch_assoc($query_ch);
$atext[] = $data_ch['q_ans'];
// insert answer to table
//$sql_eval = "INSERT INTO eval_set (s_id, q_id, response, response_value, created) VALUES ('" . $id . "', '" . $i . "', '" . $ans . "', '" . $correct . "', CURDATE())";
//mysql_query($sql_eval) or die ("Error: " . mysql_error());
}
// insert result to table
//$sql_result = "INSERT INTO result (r_score, s_id, i_id) VALUES ('" . $total . "','" . $id . "','" . $ins_id . "')";
//mysql_query($sql_result) or die ("Error: " . mysql_error());
// db query for questions
$sql_q = "SELECT q_id, q_no, q_text, q_ans, q_help FROM question";
$query_q = mysql_query($sql_q) or die("MySQL Error: " . mysql_error());
// start loop for questions & answers
$rad = 1;
while($data_q = mysql_fetch_array($query_q, MYSQL_ASSOC)){
echo "<tr><td width='20' align='center' valign='top'><label><br><input name='q_no' size='1' type='hidden' value=". $data_q['q_no'] .">". $data_q['q_no'] ."</label></td>";
echo "<td><p align='justify'>". $data_q['q_text'] ."<br />";
if(preg_match_all("/". $ans[$arr_ind]. "/i", " . $atext[$arr_ind] . ")){
echo "Something matches";
$total = total + 1;
}
//else if (preg_match("/^$/", " . $atext[$arr_ind] . "))
//echo "Empty string";
else
echo "Wrong";
echo "<p align='justify'><b>YOUR ANSWER: </b>". $ans[$arr_ind]. "</p>";
echo "<p align='justify'><label><b>SUGGESTED ANSWER:</b> <br><input name='answer_".$rad."' type='hidden' value=''>". $atext[$arr_ind] . "</label></p>";
$rad++;
$arr_ind++;
}
mysql_free_result($query_q);
include("dbconn.php");
echo "</table>";
echo "<h2>" . $total . " questions correct. - Answer Review</h2>";
echo "</form>";
?>
</body>
</html>
<?php
}
else
{
header("Location:s_login.php");
}
// close db connection
mysql_close($dbconn);
?>