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<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
function vergelijk($a, $b, $operator)
{
switch($operator)
{
case 'equal' : return $a == $b; break;
case 'identical' : return $a === $b; break;
case 'notequala' : return $a != $b; break;
case 'notequalb' : return $a <> $b; break;
case 'notidentical' : return $a !== $b; break;
case 'less' : return $a < $b; break;
case 'more' : return $a > $b; break;
case 'equalless' : return $a <= $b; break;
case 'equalmore' : return $a >= $b; break;
}
return false;
}
function create_int($var)
{
if(is_numeric($var))
{
return (int)$var;
}
return false;
}
function get_operator($operator)
{
switch($operator)
{
case 'equal' : return '==' ; break;
case 'identical' : return '===' ; break;
case 'notequala' : return '!=' ; break;
case 'notequalb' : return '<>' ; break;
case 'notidentical' : return '!==' ; break;
case 'less' : return '<' ; break;
case 'more' : return '>' ; break;
case 'equalless' : return '<=' ; break;
case 'equalmore' : return '>=' ; break;
}
}
if($_SERVER['REQUEST_METHOD'] == 'POST')
{
if(empty($_POST['a']) || empty($_POST['b']))
{
$errors[] = '<p><i>Vul beide velden in!</i></p>';
}
else
{
if(!$a = ($_POST['a-type'] == 'int') ? create_int($_POST['a']) : '"'.$_POST['a'].'"')
{
$errors[] = '<p><i>De string bij waarde 1 kan nooit een integer zijn!</i></p>';
$error = true;
}
if(!$b = ($_POST['b-type'] == 'int') ? create_int($_POST['b']) : '"'.$_POST['b'].'"')
{
$errors[] = '<p><i>De string bij waarde 2 kan nooit een integer zijn!</i></p>';
$error = true;
}
if(!isset($error))
{
$result = vergelijk($a, $b, $_POST['operator']);
$content[] = '<p><b>'.$a.'</b> '.get_operator($_POST['operator']).' <b>'.$b.'</b> geeft als uitkomtst: <b>';
$content[] = $result ? 'TRUE' : 'FALSE';
$content[] = '</b></p>';
}
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>PHPtuts.nl - PHP Scripts - Vergelijkings operators</title>
<link rel="stylesheet" href="../../styles/default.css" type="text/css" media="screen" />
<link rel="stylesheet" href="../../styles/ubb.css" type="text/css" media="screen" />
</head>
<body>
<div id="wrap">
<p class="none small align-right"><a href="/codeSnippets/"><-- Terug naar Snippets</a></p>
<h1>Vergelijkings operators</h1>
<div id="info">
<p>PHP versie: all</p>
</div>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<p>
<label class="field" for="var1">Waarde 1</label>
<input type="text" id="var1" name="a" />
<input type="radio" class="none" id="a-string" name="a-type" value="string" checked="checked"/> String
<input type="radio" class="none" id="a-int" name="a-type" value="int" /> Integer
</p>
<p>
<label class="field">Operators</label>
</p>
<p>
<input type="radio" name="operator" id="equal" value="equal" class="none" checked="checked" />
== Gelijk aan (waarde)
</p>
<p>
<input type="radio" name="operator" id="identical" value="identical" class="none" />
=== Identiek aan (waarde en type)
</p>
<p>
<input type="radio" name="operator" id="notequala" value="notequala" class="none" />
!= Niet gelijk aan (waarde)
</p>
<p>
<input type="radio" name="operator" id="notequalb" value="notequalb" class="none" />
<> Niet gelijk aan (waarde)
</p>
<p>
<input type="radio" name="operator" id="notidentical" value="notidentical" class="none" />
!== Niet identiek aan (waarde en type)
</p>
<p>
<input type="radio" name="operator" id="less" value="less" class="none" />
< Kleiner dan
</p>
<p>
<input type="radio" name="operator" id="more" value="more" class="none" />
> Groter dan
</p>
<p>
<input type="radio" name="operator" id="equalless" value="equalless" class="none" />
<= Kleiner dan of gelijk aan
</p>
<p>
<input type="radio" name="operator" id="equalmore" value="equalmore" class="none" />
>= Groter dan of gelijk aan
</p>
<p>
<label class="field" for="var2">Waarde 2</label>
<input type="text" id="var2" name="b" />
<input type="radio" class="none" id="b-string" name="b-type" value="string" checked="checked" /> String
<input type="radio" class="none" id="b-int" name="b-type" value="int" /> Integer
</p>
<p>
<input type="submit" value="Vergelijk"/>
</p>
</form>
<?php
// Weergeven van meldingen uit het phpscript.
if(isset($errors))
{
echo '<ul>';
foreach($errors as $error);
{
echo '<li>'.$error.'</li>';
}
echo '</ul>';
}
elseif(isset($content))
{
foreach($content as $line)
{
echo $line;
}
}
// Weergeven broncode
define('FILE', __FILE__);
require_once('../broncode.php');
?>
</div>
<!-- Google analytics (geen onderdeel van script) -->
<script type="text/javascript" src="/inc/ga1.js"></script>
<script type="text/javascript" src="/inc/ga2.js"></script>
</body>
</html>