我是php新手,正在try 使用按钮制作计算器.我只想在用户按=
按钮时显示结果.
代码如下:
<td><input type="text" name="calbtn0" onclick="operators('+');"
class="btn" id="add-btn" value="+"></td>
<td><input type="text" id="sub-btn" onclick="operators('-');"
class="btn" name="calbtn1" value="-"></td>
<td><input type="text" id="mult-btn" onclick="operators('*')"
class="btn" name="calbtn2" value="*"></td>
<td><input type="text" id="divid-btn" onclick="operators('/')"
class="btn" name="calbtn3" value="/"></td>
<td rowspan="4" class="equal-btn">
<input type="submit" id="equal-btn" class="btn" name="equal-btn"
value="=">
</td>
target.php
<?php
$result = 0;
$num1 = $_POST['calculator-input1'];
$num2 = $_POST['calculator-input2'];
$opr1 = $_POST['calbtn0'];
if($opr1 == '+')
{
$result = intval($num1) + intval($num2);
echo $result;
}
$opr2 = $_POST['calbtn1'];
if($opr2 == '-')
{
$result = intval($num1) - intval($num2);
echo $result;
}
$opr3 = $_POST['calbtn2'];
if($opr3 == '*')
{
$result = intval($num1) * intval($num2);
echo $result;
}
$opr4 = $_POST['calbtn3'];
if($opr4 == '/')
{
$result = intval($num1) / intval($num2);
echo $result;
}
?>
Issue