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parser.php
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parser.php
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Parse Aritmético em PHP </title>
<meta charset="UTF-8">
<meta name=description content="">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Bootstrap CSS -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" media="screen">
</head>
<body>
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<!-- Bootstrap JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<div class="container">
<h1>Result</h1>
<pre>
<?php
include 'autoloader.php';
$expressionString = filter_input(INPUT_POST, 'expression', FILTER_SANITIZE_SPECIAL_CHARS);
if($expressionString){
echo "<br>Processando a expressão: '$expressionString'<br>";
try {
$calc = new ExpressionTree($expressionString);
echo "<br>Análise prefix: '{$calc->showPreFix()}'";
echo "<br>Análise postfix: '{$calc->showPostFix()}'";
echo "<br>Análise infix: '{$calc->showInFix()}'";
echo "<br><br>Resultado: '{$calc->evaluate()}'";
}catch (Exception $e){
echo "<br>{$e->getMessage()}";
}
}else{
echo "Expressão inválida";
}
?>
</pre>
<br>
<button class="btn btn-primary" onclick="voltar()">Voltar</button>
</div>
<script>
function voltar() {
window.history.back();
}
</script>
</body>
<footer>
<br>
<div class="panel panel-default">
<div class="panel-footer">
Feito por: <a href="http://www.linkedin.com/in/edermartins">Eder Jani Martins</a> or <a href="https://github.com/edermartins/SimpleArithmeticParser">github project</a>
</div>
</div>
</footer>
</html>