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<?php $text = "[spoiler]Test\ntesting[/spoiler]."; $text = preg_replace_callback("(\[spoiler\](.*?)\[\/spoiler\])is", function($match){ $lines = explode("\n", str_rot13($match[1])); /* $output = ""; foreach ($lines as $line) { $output .= "[spoiler]".$line."[/spoiler]\n"; } */ $output = "[spoiler]".implode("[/spoiler]\n[spoiler]", $lines)."[spoiler"; return $output; }, $text ); echo $text; ?>

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