本文实例为大家分享了PHP实现简单计算器的具体代码，供大家参考，具体内容如下
caculator.php
<html>
<head>
</head>
<body>
<?php
if (!empty($_POST)) {
$data1 = $_POST[\"data1\"];
$data2 = $_POST[\"data2\"];
$fuhao = $_POST[\"fuhao\"];
$result = \"\";
echo $data1;
echo $data2;
echo $fuhao;
echo $result;
if ($fuhao == \'+\') {
$result = $data1 + $data2;
} else if ($fuhao == \'-\') {
$result = $data1 - $data2;
} else if ($fuhao == \'*\') {
$result = $data1 * $data2;
} else if ($fuhao == \'/\') {
$result = $data1 / $data2;
}
} else {
$data1 = \"\";
$data2 = \"\";
$fuhao = \"\";
$result = \"\";
}
?>
<form action=\"caculator.php\" method=\"post\">
<input type=\"text\" name=\"data1\" value=\"<?php echo $data1; ?>\"/>
<select name=\"fuhao\">
<option value=\"+\"
<?php if ($fuhao == \"+\") {
echo \'selected=\"selected\"\';
} ?>>+
</option>
<option value=\"-\"
<?php if ($fuhao == \"-\") {
echo \'selected=\"selected\"\';
} ?>>-
</option>
<option value=\"*\"
<?php if ($fuhao == \"*\") {
echo \'selected=\"selected\"\';
} ?>>*
</option>
<option value=\"/\"
<?php if ($fuhao == \"/\") {
echo \'selected=\"selected\"\';
} ?>>/
</option>
</option>
</select>
<input type=\"text\" name=\"data2\" value=\"<?php echo $data2; ?>\"/>
<input type=\"submit\" value=\"=\"/>
<input name=\"result\" type=\"text\" value=\"<?php echo $result; ?>\"/>
<input type=\"reset\"/>
</form>
</body>
</html>
运行结果：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持自学编程网。
