<?php $a = date('YmdHis'); $b = 'secret'; $bb = sha1($b); $bc = preg_replace('#[^0-9]#u', '', $bb); $c = "{$b}|{$a}"; $d = base64_encode($c); $e = base64_decode($d); echo $a . PHP_EOL; echo $b . PHP_EOL; echo $bb . PHP_EOL; echo $bc . PHP_EOL; echo $c . PHP_EOL; echo $d . PHP_EOL; echo $e . PHP_EOL;
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