我正在做一个在线测验应用程序,当我单击下一个按钮时,我需要将所有选定的单选按钮值保留到下一页,因为我正在使用分页。在下面的代码中,当我移动到下一页时,它显示未定义的偏移错误。我得到了在这一行 />'.$optA[$i].' 中检查了另一个语法错误,例如意外检查。我需要解决这些问题,请帮助任何人,在此先感谢
<?php
session_start();
include('connection.php');
mysql_select_db('quiz_apptitude');
$sql = mysql_query("SELECT * FROM prob_on_age");
$nr = mysql_num_rows($sql);
if (isset($_GET['pn'])) {
$pn = preg_replace('#[^0-9]#i', '', $_GET['pn']);
} else {
$pn = 1;
}
$itemsPerPage = 2;
$lastPage = ceil($nr / $itemsPerPage);
if ($pn < 1) {
$pn = 1;
} else if ($pn > $lastPage) {
$pn = $lastPage;
}
$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
} else if ($pn == $lastPage) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub2 . '">' . $sub2 . '</a> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add2 . '">' . $add2 . '</a> ';
} else if ($pn > 1 && $pn < $lastPage) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
}
$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage;
$sql2 = mysql_query("SELECT * FROM prob_on_age $limit") or die('error');
//$total=mysql_num_rows($sql2) ;
$i=0;
$outputList = '';
while($row = mysql_fetch_array($sql2)){
$Question[]=$row['prob_Question'];
$optA[]=$row['prob_OptionA'];
$optB[]=$row['prob_OptionB'];
$optC[]=$row['prob_OptionC'];
$optD[]=$row['prob_OptionD'];
$ans[]=$row['prob_Answer'];
$Qid[$i]=$row['prob_Qid'];
$ans[$i]=$row['prob_Answer'];
$r=$i+1;
$outputList .= '<table><tr>
<td> '.$r.' . '.$Question[$i].'</td>
</tr>
<tr> <td><input type="hidden" name="'.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$Qid[$i].'" /></td>
</tr>
<tr>
<td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optA[$i].'" <?php echo '.$optA[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optA[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optB[$i].'" <?php echo '.$optB[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?> />
'.$optB[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optC[$i].'" <?php echo '.$optC[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optC[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optD[$i].'" <?php echo '.$optD[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optD[$i].'</td></tr>
<tr> <td><input type="hidden" name="'.$ans[$i].'" id="'.$Qid[$i].'" value="'.$ans[$i].'" /></td>
</tr></table>';
$i++;
}
$count=count($Qid);
$paginationDisplay = "";
if ($lastPage != "1"){
$paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. ' ';
if ($pn != 1) {
$previous = $pn - 1;
$paginationDisplay .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $previous . '"> Back</a> ';
}
$paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';
if ($pn != $lastPage) {
$nextPage = $pn + 1;
$paginationDisplay .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $nextPage . '">Next</a> ';
}
}
?>
<?php
session_start();
include('connection.php');
mysql_select_db('quiz_apptitude');
$sql = mysql_query("SELECT * FROM prob_on_age");
$nr = mysql_num_rows($sql);
if (isset($_GET['pn'])) {
$pn = preg_replace('#[^0-9]#i', '', $_GET['pn']);
} else {
$pn = 1;
}
$itemsPerPage = 2;
$lastPage = ceil($nr / $itemsPerPage);
if ($pn < 1) {
$pn = 1;
} else if ($pn > $lastPage) {
$pn = $lastPage;
}
$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
} else if ($pn == $lastPage) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub2 . '">' . $sub2 . '</a> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add2 . '">' . $add2 . '</a> ';
} else if ($pn > 1 && $pn < $lastPage) {
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> ';
}
$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage;
$sql2 = mysql_query("SELECT * FROM prob_on_age $limit") or die('error');
//$total=mysql_num_rows($sql2) ;
$i=0;
$outputList = '';
while($row = mysql_fetch_array($sql2)){
$Question[]=$row['prob_Question'];
$optA[]=$row['prob_OptionA'];
$optB[]=$row['prob_OptionB'];
$optC[]=$row['prob_OptionC'];
$optD[]=$row['prob_OptionD'];
$ans[]=$row['prob_Answer'];
$Qid[$i]=$row['prob_Qid'];
$ans[$i]=$row['prob_Answer'];
$r=$i+1;
$outputList .= '<table><tr>
<td> '.$r.' . '.$Question[$i].'</td>
</tr>
<tr> <td><input type="hidden" name="'.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$Qid[$i].'" /></td>
</tr>
<tr>
<td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optA[$i].'" <?php echo '.$optA[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optA[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optB[$i].'" <?php echo '.$optB[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?> />
'.$optB[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optC[$i].'" <?php echo '.$optC[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optC[$i].'</td></tr>
<tr> <td><input type="radio" name=" '.$Qid[$i].'" id="'.$Qid[$i].'" value="'.$optD[$i].'" <?php echo '.$optD[$i].' == $_POST[''.$Qid[$i].''] ? ' checked="checked"' : ''; ?>/>
'.$optD[$i].'</td></tr>
<tr> <td><input type="hidden" name="'.$ans[$i].'" id="'.$Qid[$i].'" value="'.$ans[$i].'" /></td>
</tr></table>';
$i++;
}
$count=count($Qid);
$paginationDisplay = "";
if ($lastPage != "1"){
$paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. ' ';
if ($pn != 1) {
$previous = $pn - 1;
$paginationDisplay .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $previous . '"> Back</a> ';
}
$paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';
if ($pn != $lastPage) {
$nextPage = $pn + 1;
$paginationDisplay .= ' <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $nextPage . '">Next</a> ';
}
}
?>
<html>
<head>
<title>online QiuZ</title>
</head>
<body>
<div style="margin-left:64px; margin-right:64px;">
<h2>Problem On Age</h2>
</div>
<!-- <div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php //echo $paginationDisplay; ?></div>-->
<div style="margin-left:64px; margin-right:64px;">
<form name="prob_age" id="prob_age" method="post" action="result-age.php" >
<?php print "$outputList"; ?>
<div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div>
<input type="submit" name="submit" id="submit" value="submit">
</form>
</div>
</body>
</html>