php 过滤标点
// Filter 英文标点符号
$word = preg_replace("/[[:punct:]]/i"," ",$word);
// Filter 中文标点符号
mb_regex_encoding('utf-8');
$char = "。、!?:;﹑•"…‘’“”〝〞∕¦‖— 〈〉﹞﹝「」‹›〖〗】【»«』『〕〔》《﹐¸﹕︰﹔!¡?¿﹖﹌﹏﹋'´ˊˋ―﹫︳︴¯_ ̄﹢﹦﹤‐˜﹟﹩﹠﹪﹡﹨﹍﹉﹎﹊ˇ︵︶︷︸︹︿﹀︺︽︾ˉ﹁﹂﹃﹄︻︼()";
$word = mb_ereg_replace("[".$char."]"," ",$word,"UTF-8");
// Filter 连续空格
$word = preg_replace("/\s+/"," ",$word);