私はphpでOOP計算機に取り組んでいますが、問題があります.保存してFirefoxで実行すると、次のようなコードが表示されます
スタック オーバーフローにより、さらに説明を追加する必要があるため、何とか何とか何とか何とか
私が使用しているコードは
<html>
<body>
<?php
$page = $GET['page'];
class calc{
var $number1;
var $number2;
function add($number,$number2)
{
$result = $number1 + $number2;
echo("The sum of $number1 and $number2 is $result<br><br>");
echo("$number1 + $number 2 = $result");
exit;
}
function subtract($number1,$number2)
{
$result = $number1 - $number2;
echo("$number1 subtract $number2 is $result<br><br>");
echo("$number1 - $number2 = $result");
exit;
}
function multiply($number1,$number2)
{
$result = $number1 * $number2;
echo("$number1 multiplied by $number2 is $result<br><br>");
echo("$number1 * $number2 = $result");
exit;
}
function divide($number1,$number2)
{
$result = $number1 / $number2;
echo("$number1 divided by $number2 is $result<br><br>");
echo("$number1 / $number2 = $result");
exit;
}
}
$calc = new calc();
?>
<title>php object oriented calculator</title>
<form name="calc" action="?page=calc" method="POST">
Number 1: <input type=text name=value1><br>
Number 2: <input type=text name=value2><br>
Operation: <input type=radio name=oper value="add">Addition <input type=radio name=oper value="subtract">Subtraction <input type=radio name=oper value="divide">Division <input type=radio name=oper value="multiply">Multiplication</input><br>
<input type=submit value="Calculate">
</form>
<?php
if($page == "calc"){
$number1 = $_POST['value1'];
$number2 = $_POST['value2'];
$oper = $_POST['oper'];
if(!$number1){
echo("You must enter number 1!");
exit;
}
if(!$number2){
echo("You must enter number 2!");
exit;
}
if(!$oper){
echo("You must select an operation to do with the numbers!");
exit;
}
if(!eregi("0-9", $number1)){
echo("Number 1 MUST be numbers!");
exit;
}
if(!eregi("0-9", $number2)){
echo("Number 2 MUST be numbers!");
exit;
}
if($oper == "add"){
$calc->add($number1,$number2);
}
if $oper =="subtract"){
$calc->subtract($number1,$number2);
}
if $oper = "multiply"){
$calc->multiply($number1,$number2);
}
if $oper = "divide"){
$calc->divide($number1,$number2);
}
}
?>
</body>
</html>