RobinNixon
47 lines
1021 B
PHP
47 lines
1021 B
PHP
<?php // convert.php
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$f = $c = '';
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if (isset($_POST['f'])) $f = sanitizeString($_POST['f']);
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if (isset($_POST['c'])) $c = sanitizeString($_POST['c']);
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if (is_numeric($f))
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{
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$c = intval((5 / 9) * ($f - 32));
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$out = "$f °f equals $c °c";
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}
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elseif(is_numeric($c))
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{
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$f = intval((9 / 5) * $c + 32);
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$out = "$c °c equals $f °f";
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}
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else $out = "";
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echo <<<_END
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<html>
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<head>
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<title>Temperature Converter</title>
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</head>
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<body>
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<pre>
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Enter either Fahrenheit or Celsius and click on Convert
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<b>$out</b>
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<form method="post" action="convert.php">
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Fahrenheit <input type="text" name="f" size="7">
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Celsius <input type="text" name="c" size="7">
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<input type="submit" value="Convert">
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</form>
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</pre>
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</body>
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</html>
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_END;
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function sanitizeString($var)
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{
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if (get_magic_quotes_gpc())
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$var = stripslashes($var);
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$var = htmlentities($var);
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$var = strip_tags($var);
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return $var;
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}
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?>
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