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https://github.com/php/presentations.git
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Chris Shiflett
28 lines
590 B
PHP
28 lines
590 B
PHP
<?
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$secret = uniqid(time());
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$fp = fopen('./secrets.txt', 'a');
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fwrite($fp, "$secret\n");
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fclose($fp);
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?>
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<form action="<? echo $PHP_SELF; ?>">
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<input type="text" name="message">
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<input type="hidden" name="secret" value="<? echo $secret; ?>">
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<input type="submit">
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</form>
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<?
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if (!empty($_GET['message']))
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{
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$secrets = file('./secrets.txt');
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$user_secret = "{$_GET['secret']}\n";
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if (in_array($user_secret, $secrets))
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{
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$fp = fopen('./safer.txt', 'a');
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$msg = $_GET['message'];
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$msg = htmlentities($msg);
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fwrite($fp, "$msg<br>");
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fclose($fp);
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}
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}
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readfile('./safer.txt');
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?>
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