今天在测试站点发现一个问题，网站头满屏的：
Warning: preg_replace(): Compilation failed: invalid range in character class at offset 4 in /www/wwwroot/www.attx.org/wp-content/plugins/crayon-syntax-highlighter/crayon_langs.class.php on line 340 Warning: preg_replace(): Compilation failed: invalid range in character class at offset 4 in /www/wwwroot/www.attx.org/wp-content/plugins/crayon-syntax-highlighter/crayon_langs.class.php on line 340 Warning: preg_replace(): Compilation failed: invalid range in character class at offset 4 in /www/wwwroot/www.attx.org/wp-content/plugins/crayon-syntax-highlighter/crayon_langs.class.php on line 340
有点奇怪，主站就没事，找到/www/wwwroot/www.attx.org/wp-content/plugins/crayon-syntax-highlighter/crayon_langs.class.php这个文件查看：
// Override
function clean_id($id) {
$id = CrayonUtil::space_to_hyphen( strtolower(trim($id)) );
return preg_replace('/[^\w-+#]/msi', '', $id);
}
找到报错的这一行，将return preg_replace('/[^\w-+#]/msi', '', $id);改为return preg_replace('/\[^\w-+#]/msi', '', $id);
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