jquery sortable

can’t solve it working !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

php global variables

	$GLOBALS['choice'] = array(0 => $opt1[0], 1 => $opt2[0], 2 => $opt3[0], 3 => $ans[0]);
	$GLOBALS['num'] = range(0,3);
	srand((float)microtime() * 1000000);
	shuffle($GLOBALS['num']);

	echo "<p style='color:rgb(1,255,1);'>以下那一個是錯別字：</p>";
	for ($i = 0; $i <= 3; $i++) {
		echo $i+1 . ": " . $GLOBALS['choice'][$GLOBALS['num'][$i]] . "　　";

		// to capture the answer number (for MC of four options)
		if ($GLOBALS['num'][$i] == 3) $GLOBALS['ansnum'] = $i;
	}

php mysql mc question submit answer

A little technical problem:
PHP part:

<select id="mc">
  <option value="1"><?php echo $choice[0];?></option>
  <option value="2"><?php echo $choice[1];?></option>
  <option value="3"><?php echo $choice[2];?></option>
  <option value="4"><?php echo $choice[3];?></option>
</select>

<input type="button" id="answer_btn" style="float: left;" value="選擇答案" onclick="answerbox(<?php echo $ans[0];?>)"/>

jScript part:

function answerbox(a) {

obja = document.getElementById("mc");
if (a == obja.value)
	alert ("correct !");
else
	alert ("wrong !");

}

CAN’T GET IT OUT !!!!!!!!!!!!!!!!!!!!!

php mysql generate MC question

$query = "SELECT cword FROM ww_tbl ORDER by rand() LIMIT 1";
$result = mysql_query($query);
$opt1 = mysql_fetch_row($result);
$query = "SELECT cword FROM ww_tbl ORDER by rand() LIMIT 1";
$result = mysql_query($query);
$opt2 = mysql_fetch_row($result);
$query = "SELECT cword FROM ww_tbl ORDER by rand() LIMIT 1";
$result = mysql_query($query);
$opt3 = mysql_fetch_row($result);
$query = "SELECT wword FROM ww_tbl ORDER by rand() LIMIT 1";
$result = mysql_query($query);
$ans = mysql_fetch_row($result);

$choice = array(0 => $opt1[0], 1 => $opt2[0], 2 => $opt3[0], 3 => $ans[0]);
$num = range(0,3);
srand((float)microtime() * 1000000);
shuffle($num);

echo "<p style='color:rgb(1,255,1);'>以下那一個是錯別字：</p>";
foreach ($num as $n) {
    echo $choice[$n] . "　　";
}

mysql php display random row

$query = "SELECT wword ,cword FROM ww_tbl ORDER by rand() LIMIT 1";
$result = mysql_query($query);

$row = mysql_fetch_row($result);

echo $row[0] . "的正寫應是" . $row[1] ;