36 lines
1.0 KiB
PHP
36 lines
1.0 KiB
PHP
<?php
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if ($_SERVER["REQUEST_METHOD"] == "POST") {
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$height = $_POST['height'];
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$weight = $_POST['weight'];
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if ($height!= "" && $weight!= "") {
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$bmi = $weight / ($height * $height);
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if ($bmi >= 18.50 && $bmi <= 23.90) {
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$result = "BMI指数正常";
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} else {
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$result = "BMI指数异常";
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}
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} else {
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$result = "请输入完整的身高和体重信息";
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}
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}
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>BMI健康指标计算器</title>
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</head>
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<body>
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<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
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身高（米）: <input type="text" id="height" name="height" placeholder="请输入身高"><br>
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体重（千克）: <input type="text" id="weight" name="weight" placeholder="请输入体重"><br>
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<input type="submit" id="ok" name="ok" value="确定">
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</form>
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<?php if (isset($result)) {?>
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<p><?php echo $result;?></p>
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<?php }?>
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</body>
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</html>
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