PHP Calculator not working as expected -
i have created php calculator when try divide 2 numbers multiplies them
link code=http://pastebin.com/raw.php?i=9qtmjmqy
<?php ?> <html> <body> <?php if(isset($_get['page'])){ $page = $_get['page']; } else{ $page = ''; } class calc{ var $number1; var $number2; function add($number1,$number2) { $result = $number1 + $number2; echo("the sum of $number1 , $number2 $result<br><br>"); echo("$number1 + $number2 = $result"); exit; } function subtract($number1,$number2) { $result = $number1 - $number2; echo("$number1 subtract $number2 $result<br><br>"); echo("$number1 - $number2 = $result"); exit; } function multiply($number1,$number2) { $result = $number1 * $number2; echo("$number1 multiplied $number2 $result<br><br>"); echo("$number1 * $number2 = $result"); exit; } function divide($number1,$number2) { $result = $number1 / $number2; echo("$number1 divided $number2 $result<br><br>"); echo("$number1 / $number2 = $result"); exit; } } $calc = new calc(); ?> <title>php object oriented calculator</title> <form name="calc" action="?page=calc" method="post"> number 1: <input type=text name=value1><br> number 2: <input type=text name=value2><br> operation: <input type=radio name=oper value="add">addition <input type=radio name=oper value="subtract">subtraction <input type=radio name=oper value="divide">division <input type=radio name=oper value="multiply">multiplication<br> <input type=submit value="calculate"> </form> <?php if($page == "calc"){ $number1 = (int)$_post['value1']; $number2 = (int)$_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 operation 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,$number2); } } ?> </body> </html>
you using assignment instead of comparison
your code (wrong!):
if ($oper = "multiply") right code (what want do):
if ($oper == "multiply") the same division.
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