求个php原始增删改查的代码，要有简单的html代码

去除html标签 function strip_tags($string, $replace_with_space = true) { if ($replace_with_space) { return preg_replace('!<[^>]*?>!', ' ', $string); } else { return strip_tags($string); } } 截取字符函数（匹配各种编码） function truncate($string, $length = 80, $etc = '...', $break_words = false, $middle = false){ if ($length == 0) return ''; if (is_callable('mb_strlen')) { if (mb_detect_encoding($string, 'UTF-8, ISO-8859-1') === 'UTF-8') { // $string has utf-8 encoding if (mb_strlen($string) > $length) { $length -= min($length, mb_strlen($etc)); if (!$break_words && !$middle) { $string = preg_replace('/\s+?(\S+)?$/u', '', mb_substr($string, 0, $length + 1)); } if (!$middle) { return mb_substr($string, 0, $length) . $etc; } else { return mb_substr($string, 0, $length / 2) . $etc . mb_substr($string, - $length / 2); } } else { return $string; } } } // $string has no utf-8 encoding if (strlen($string) > $length) { $length -= min($length, strlen($etc)); if (!$break_words && !$middle) { $string = preg_replace('/\s+?(\S+)?$/', '', substr($string, 0, $length + 1)); } if (!$middle) { return substr($string, 0, $length) . $etc; } else { return substr($string, 0, $length / 2) . $etc . substr($string, - $length / 2); } } else { return $string; } } 综合就是 $arc=strip_tags($arc); $arc=truncate($arc,200)

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