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<?php $f=$c= ""; if(isset($_POST['f'])) $f=sanitizeString($_POST['f']); if(isset($_POST['c'])) $c=sanitizeString($_POST['c']); if($f!= '') { $c=intval((5/9)*($f-32)); $out="$f degree farenheit equals $c degree celsius"; } elseif($c!= '') { $f=intval((9/5)* $c + 32); $out="$c degree celsius equals $f degree farenheit"; } else $out= ""; echo <<<_END <html><head><title>Temparature Converter</title> </head><body><pre> Enter either Fahrenheit or Celsius and click on Convert <b>$out</b> <form method="post" action="convert.php"> Fahrenheit <input type="text" name="f" size="7"/> Celsius <input type="text" name="c" size="7"/> <input type="submit" value="convert" /> </form> </pre> </body> </html> _END; function sanitizeString($var) { $var=stripslashes($var); $var=htmlentities($var); $var=strip_tags($var); return $var; } ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
<html><head><title>Temparature Converter</title> </head><body><pre> Enter either Fahrenheit or Celsius and click on Convert <b></b> <form method="post" action="convert.php"> Fahrenheit <input type="text" name="f" size="7"/> Celsius <input type="text" name="c" size="7"/> <input type="submit" value="convert" /> </form> </pre> </body> </html>
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <html><head><title>Temparature Converter</title> </head><body><pre> Enter either Fahrenheit or Celsius and click on Convert <b></b> <form method="post" action="convert.php"> Fahrenheit <input type="text" name="f" size="7"/> Celsius <input type="text" name="c" size="7"/> <input type="submit" value="convert" /> </form> </pre> </body> </html>

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