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<html> <head> </head> <title> </title> <body> <?php if (!$_POST['submit']) { ?> <form action="<?= $_SERVER['SELF_PHP'];?>" method="post" > Enter any Number:<input name="number" size="2"> <input type="submit" name="submit" value="OK!"> <?php } else { $number=$_POST['number']; if ($number >0) { echo 'You entered a positive number'; } elseif ($number < 0) { echo 'You entered a negative number'; } else { echo 'You entered zero'; } } ?> </body> </html>
Output for git.master, git.master_jit, rfc.property-hooks
<html> <head> </head> <title> </title> <body> Warning: Undefined array key "submit" in /in/QjBnH on line 6 <form action=" Warning: Undefined array key "SELF_PHP" in /in/QjBnH on line 8 " method="post" > Enter any Number:<input name="number" size="2"> <input type="submit" name="submit" value="OK!"> </body> </html>

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