自定义安全过滤

function safe_replace ( $string ) { $string = str_replace ( '%20' , '' , $string ) ; $string = str_replace ( '%27' , '' , $string ) ; $string = str_replace ( '%2527' , '' , $string ) ; $string = str_replace ( '*' , '' , $string ) ; $string = str_replace ( '"' , '"' , $string ) ; $string = str_replace ( "'" , '' , $string ) ; $string = str_replace ( '"' , '' , $string ) ; $string = str_replace ( ';' , '' , $string ) ; $string = str_replace ( '<' , '<' , $string ) ; $string = str_replace ( '>' , '>' , $string ) ; $string = str_replace ( "{" , '' , $string ) ; $string = str_replace ( '}' , '' , $string ) ; $string = str_replace ( '\\' , '' , $string ) ; return $string ; }