strip_tags($str, [允許標簽])? #從字符串中去除 HTML 和 PHP 標記
htmlentities($str)函數(shù)??? #轉(zhuǎn)義html實體
html_entity_decode($str)函數(shù)??? #反轉(zhuǎn)義html實體
addcslashes($str, ‘字符’)函數(shù)???? #給某些字符加上反斜杠
stripcslashes($str)函數(shù)????????? #去掉反斜杠
addslashes ($str )函數(shù)???? ?????#單引號露氮、雙引號蟀架、反斜線與 NULL加反斜杠
stripslashes($str)函數(shù)?????????? #去掉反斜杠
htmlspecialchars()????????????? #特殊字符轉(zhuǎn)換為HTML實體
htmlspecialchars_decode()?????? #將特殊的 HTML 實體轉(zhuǎn)換回普通字符