PHP Undefined offset: 0 error
Posted: Wed Dec 18, 2013 3:36 am
Hello,
I got a error in my code witch I can't figure out what is wrong maybe some one could help me?
I got a error in my code witch I can't figure out what is wrong maybe some one could help me?
Code: Select all
<?php
session_start();
if (!isset($_SESSION['vragen'])) {
$_SESSION['vragen'] = array(
'n1' => array(),
'n2' => array(),
'ans' => array()
);
$_SESSION['count'] = 0;
$number1 = range(10,100);
$number2 = range(1,10);
$uitkomst= $number1 / $number2;
$nieuw= round ($uitkomst,0);
$number1= $nieuw*$number2;
$arr = array_rand($number1, 100);
foreach ($arr as $k) $_SESSION['vragen']['n1'][] = $number1[$k];
$number1 = array_diff($number1, $_SESSION['vragen']['n1']);
$arr = array_rand($number2, 10);
foreach ($arr as $k) $_SESSION['vragen']['n2'][] = $number2[$k];
}
if (isset($_POST['ans'])) {
$_SESSION['vragen']['ans'][$_SESSION['count']] = $_POST['ans'];
++$_SESSION['count'];
}
?>
<html>
<head>
<title>Delen groep 6 </title>
</head>
<body>
<form method='post' action=''>
<?php
$q = $_SESSION['count']+1;
if ($q < 11) {
echo <<<EOT
<h2>Groep 6 Delen (:)</h2>
<h5>vraag $q</h5>
{$_SESSION['vragen']['n1'][$_SESSION['count']]}
:
{$_SESSION['vragen']['n2'][$_SESSION['count']]}
<br><br>
Jou Antwoordt: <input type='text' size='3' name='ans'><br>
<br><br>
<input name='btnsubmit' type='submit' value='Volgende'>
<input name='btnreset' type='reset' value='Leegmaken'>
EOT;
}
else {
echo "<h5>Resultaat</h5>
<table border='1' cellpadding='3' style='border-collapse:collapse'>\n
<tr><td></td><td>Vraag</td><td>Antwoordt</td><td>Jou Antwoordt</td><td>Goed</td></tr>\n";
for ($i=0; $i<10; $i++) {
$qno = $i+1;
$qtext = "{$_SESSION['vragen']['n1'][$i]} : {$_SESSION['vragen']['n2'][$i]}";
$ans = $_SESSION['vragen']['n1'][$i] / $_SESSION['vragen']['n2'][$i];
$yours = $_SESSION['vragen']['ans'][$i];
$chk = $ans==$yours ? '✓' : '';
echo "<tr><td>$qno</td><td>$qtext</td><td>$ans</td><td>$yours</td><td>$chk</td></tr>\n";
}
echo "</table>\n<br><input name='btnsubmit' type='submit' value='Nieuwe Test'>";
unset($_SESSION['vragen']);
}
?>