priemgetallen.php
Code (php)
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<?php
set_time_limit(0); // Om timeouts te vermijden bij grote getallen
// Loadtime bepalen
$starttime = microtime();
$startarray = explode(" ", $starttime);
$starttime = $startarray[1] + $startarray[0];
?>
<html>
<head>
<style type="text/css">
body {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
table tr td {
font-size: 12px;
padding: 5px;
}
fieldset {
border: 1px solid #555;
width: 400px;
margin: 5px;
display: inline-block;
vertical-align: top;
}
legend {
padding: 5px;
}
input {
border: 1px solid #CCC;
padding: 2px;
}
hr {
background: #EEE;
border: 0;
height: 1px;
}
</style>
<title>Priemgetallen</title>
</head>
<body>
<form action="" method="post">
<fieldset>
<legend>Check Priemgetal</legend>
<table>
<tr>
<td>Getal</td>
<td><input type="text" size="4" name="number" /></td>
<td><input type="submit" name="check" value="Controleer Getal" /></td>
</tr>
</table>
<?php
if($_SERVER['REQUEST_METHOD'] == "POST") {
$number = $_POST['number'];
if(isset($_POST['check']) && !empty($number) && is_numeric($number)) {
$gevondenDelers = 0;
for($i = 1; $i <= $number; $i++) {
$result = $number / $i;
if(is_int($result)) {
$gevondenDelers++;
}
}
if($gevondenDelers == 2) { // Precies 2 delers, 1 en zichzelf
echo '<span style="background: #DFFFE3; padding: 2px;">Het getal <b>' . $number . '</b> is een priemgetal.</span>';
}
else {
echo '<span style="background: #FFDFE3; padding: 2px;">Het getal <b>' . $number . '</b> is geen priemgetal.</span>';
}
}
}
?>
</fieldset>
<fieldset>
<legend>Lijsten Priemgetallen</legend>
<table>
<tr>
<td>Van</td>
<td><input type="text" size="4" name="number1" /></td>
<td>Tot</td>
<td><input type="text" size="4" name="number2" /></td>
<td><input type="submit" name="lijst" value="Maak Lijst" /></td>
</tr>
</table>
<?php
if($_SERVER['REQUEST_METHOD'] == "POST") {
$number1 = $_POST['number1'];
$number2 = $_POST['number2'];
$columns = 10;
if(isset($_POST['lijst']) && !empty($number1) && !empty($number2) && is_numeric($number1) && is_numeric($number2)) {
$i = $number1;
$totalNumbers = $number2 - $number1 + 1;
$tableDesignCount = 1;
$priemgetal = 0;
echo '<table style="width: 100%;">';
while($i <= $number2) {
if($tableDesignCount == 1) {
echo '<tr>';
}
$gevondenDelers = 0;
for($i2 = 1; $i2 <= $i; $i2++) {
$result = $i / $i2;
if(is_int($result)) {
$gevondenDelers++;
}
}
echo '<td><span style="padding: 2px; background: #';
if($gevondenDelers == 2) {
echo 'DFFFE3';
$priemgetal++;
}
else {
echo 'FFDFE3';
}
echo '">' . $i++ . '</span></td>';
if($tableDesignCount == $columns) {
echo '</tr>';
$tableDesignCount = 0;
}
$tableDesignCount++;
}
echo '</table>';
echo '<p>Er zijn ' . $priemgetal . ' getallen van de ' . $totalNumbers . ' (' . round(($priemgetal/$totalNumbers)*100) . '%) getallen priem.</p>';
}
}
?>
</fieldset>
</form>
<?php
$endtime = microtime();
$endarray = explode(" ", $endtime);
$endtime = $endarray[1] + $endarray[0];
$totaltime = $endtime - $starttime;
$totaltime = round($totaltime, 3);
echo "<center>Loadtime: " . $totaltime . " seconds.";
?>
</body>
</html>
set_time_limit(0); // Om timeouts te vermijden bij grote getallen
// Loadtime bepalen
$starttime = microtime();
$startarray = explode(" ", $starttime);
$starttime = $startarray[1] + $startarray[0];
?>
<html>
<head>
<style type="text/css">
body {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
table tr td {
font-size: 12px;
padding: 5px;
}
fieldset {
border: 1px solid #555;
width: 400px;
margin: 5px;
display: inline-block;
vertical-align: top;
}
legend {
padding: 5px;
}
input {
border: 1px solid #CCC;
padding: 2px;
}
hr {
background: #EEE;
border: 0;
height: 1px;
}
</style>
<title>Priemgetallen</title>
</head>
<body>
<form action="" method="post">
<fieldset>
<legend>Check Priemgetal</legend>
<table>
<tr>
<td>Getal</td>
<td><input type="text" size="4" name="number" /></td>
<td><input type="submit" name="check" value="Controleer Getal" /></td>
</tr>
</table>
<?php
if($_SERVER['REQUEST_METHOD'] == "POST") {
$number = $_POST['number'];
if(isset($_POST['check']) && !empty($number) && is_numeric($number)) {
$gevondenDelers = 0;
for($i = 1; $i <= $number; $i++) {
$result = $number / $i;
if(is_int($result)) {
$gevondenDelers++;
}
}
if($gevondenDelers == 2) { // Precies 2 delers, 1 en zichzelf
echo '<span style="background: #DFFFE3; padding: 2px;">Het getal <b>' . $number . '</b> is een priemgetal.</span>';
}
else {
echo '<span style="background: #FFDFE3; padding: 2px;">Het getal <b>' . $number . '</b> is geen priemgetal.</span>';
}
}
}
?>
</fieldset>
<fieldset>
<legend>Lijsten Priemgetallen</legend>
<table>
<tr>
<td>Van</td>
<td><input type="text" size="4" name="number1" /></td>
<td>Tot</td>
<td><input type="text" size="4" name="number2" /></td>
<td><input type="submit" name="lijst" value="Maak Lijst" /></td>
</tr>
</table>
<?php
if($_SERVER['REQUEST_METHOD'] == "POST") {
$number1 = $_POST['number1'];
$number2 = $_POST['number2'];
$columns = 10;
if(isset($_POST['lijst']) && !empty($number1) && !empty($number2) && is_numeric($number1) && is_numeric($number2)) {
$i = $number1;
$totalNumbers = $number2 - $number1 + 1;
$tableDesignCount = 1;
$priemgetal = 0;
echo '<table style="width: 100%;">';
while($i <= $number2) {
if($tableDesignCount == 1) {
echo '<tr>';
}
$gevondenDelers = 0;
for($i2 = 1; $i2 <= $i; $i2++) {
$result = $i / $i2;
if(is_int($result)) {
$gevondenDelers++;
}
}
echo '<td><span style="padding: 2px; background: #';
if($gevondenDelers == 2) {
echo 'DFFFE3';
$priemgetal++;
}
else {
echo 'FFDFE3';
}
echo '">' . $i++ . '</span></td>';
if($tableDesignCount == $columns) {
echo '</tr>';
$tableDesignCount = 0;
}
$tableDesignCount++;
}
echo '</table>';
echo '<p>Er zijn ' . $priemgetal . ' getallen van de ' . $totalNumbers . ' (' . round(($priemgetal/$totalNumbers)*100) . '%) getallen priem.</p>';
}
}
?>
</fieldset>
</form>
<?php
$endtime = microtime();
$endarray = explode(" ", $endtime);
$endtime = $endarray[1] + $endarray[0];
$totaltime = $endtime - $starttime;
$totaltime = round($totaltime, 3);
echo "<center>Loadtime: " . $totaltime . " seconds.";
?>
</body>
</html>