PHP正则表达式过滤所有标点符号

// 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);