解决方法一:
打开/source/function/function_core.php
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$content = preg_replace($_G['setting']['output']['preg']['search'], $_G['setting']['output']['preg']['replace'], $content);
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在上面加入
if (preg_match("(/|#|\+|%).*(/|#|\+|%)e", $_G['setting']['output']['preg']['search']) !== FALSE) { die("request error"); }
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解决方法二: 停止使用或卸载memcache