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<? print base64_encode("логин"); print '<br>'; print base64_encode("пароль"); ?>
Output for 5.4.34 - 7.2.0
0LvQvtCz0LjQvQ==<br>0L/QsNGA0L7Qu9GM
Output for 4.3.0 - 5.4.32
<? print base64_encode("логин"); print '<br>'; print base64_encode("пароль"); ?>