<html>
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<head>
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<title>Converting Temperatures</title>
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<meta charset="utf-8">
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</head>
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<body>
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<form name="form1" method="POST" action="<?php echo $_SERVER["PHP_SELF"]; ?>">
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<table>
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<tr>
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<td>Enter the temperature to convert:</td>
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<td><input type="text" name="temp" id="temp" size="10"></td>
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</tr>
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<tr>
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<td>Convert to:</td>
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<td><select name="scale" id="scale" size="1">
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<option disabled>Select the scale</option>
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<option value="c">Celsius</option>
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<option value="f">Fahrenheit</option>
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</select>
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</td>
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</tr>
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<tr>
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<td><input type="submit" name="btnConvert" id="btnConvert" value="Convert"></td>
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<td><input type="reset" name="btnReset" id="btnReset" value="Reset"></td>
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</tr>
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</form>
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<?php
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function convert($value, $type){
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if($type== "f"){
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return (((9/5)*$value) +(32));
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}
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elseif ($type== "c"){
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return (($value - 32) * (5/9));
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}
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}
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if (isset($_POST['btnConvert'])) {
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$temp = $_POST['temp'];
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$scale = $_POST['scale'];
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$converted = convert($temp, $scale);
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echo "The original temperature, $temp, converted is $converted.";
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}
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?>
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</body>
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</html>
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