php规则验证

function check_data($string, $type='email'){
    $return = FALSE;
    switch($type){
        case 'email'        : {$return = preg_match("/^(w+[-+.]*w+)*@(w+([-.]*w+)*.w+([-.]*w+)*)$/", $string); break;}
        case 'http'         : {$return = preg_match("/^http://[A-Za-z0-9-]+.[A-Za-z0-9]+[/=?%-&_~`@[]':+!]*([^<>"])*$/", $string); break;}
        case 'qq'           : {$return = preg_match("/^[1-9]d{4,11}$/", $string); break;}
        case 'post'         : {$return = preg_match("/^[1-9]d{5}$/", $string); break;}
        case 'idnum'        : {$return = preg_match("/^d{15}(d{2}[A-Za-z0-9])?$/", $string); break;}
        case 'china'        : {$return = preg_match("/^[".chr(0xa1)."-".chr(0xff)."]+$/", $string); break;} //GBK中文
        case 'english'      : {$return = preg_match("/^[A-Za-z]+$/", $string); break;}
        case 'mobile'       : {$return = preg_match("/^(((d{3}))|(d{3}-))?((13)|(14)|(15)|(17)|(18)){1}d{9}$/", $string); break;}
        case 'phone'        : {$return = preg_match("/^(((d{3}))|(d{3}-))?((0d{2,3})|0d{2,3}-)?[1-9]d{6,7}$/", $string); break;}
        case 'safe'         : {$return = preg_match("/^(([A-Z]*|[a-z]*|d*|[-_~!@#$%^&*.()[]{}<>?\/'"]*)|.{0,5})$|s/", $string) != 0 ? TRUE : FALSE; break;}
        case 'age'          : {$return = (preg_match("/^(-{0,1}|+{0,1})[0-9]+(.{0,1}[0-9]+)$/", $string) && intval($string) = 12) ? TRUE : FALSE; break;}
        case 'eng_num'      : {$return = preg_match("/^[A-Za-z0-9]+$/", $string); break;}
        case 'password'     : {$return = (preg_match("/^[A-Za-z0-9]+$/", $string) && strlen($string) = 6) ? TRUE : FALSE; break;}
        case 'datetime'     : {$return = preg_match('/^[d]{4}-[d]{1,2}-[d]{1,2}s[d]{1,2}:[d]{1,2}:[d]{1,2}$/', $string); break;}
        case 'datetimes'    : {$return = preg_match('/^[d]{4}-[d]{2}-[d]{2}s[d]{2}:[d]{2}:[d]{2}$/', $string); break;}
        case 'date'         : {$return = preg_match('/^[d]{4}-[d]{1,2}-[d]{1,2}$/', $string); break;}
        case 'dates'        : {$return = preg_match('/^[d]{4}-[d]{2}-[d]{2}$/', $string); break;}
        case 'time'         : {$return = preg_match('/^[d]{1,2}:[d]{1,2}:[d]{1,2}$/', $string); break;}
        case 'times'        : {$return = preg_match('/^[d]{2}:[d]{2}:[d]{2}$/', $string); break;}
        case 'ip'           : {$return = preg_match("/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/", $string); break;}
        case 'incchinese'   : {$return = preg_match('/[x{4e00}-x{9fa5}]+/u', $string); break;} //是否包含中文
        case 'plusnum'      : {$return = preg_match('/^[1-9]*[1-9][0-9]*$/', $string); break;} //是否是正整数
        case 'hostrecord'   : {$return = preg_match('/^[A-Z_a-z0-9][A-Za-z0-9-]+(.[A-Za-z0-9-_]+)*$/', $string); break;} //正确的主机记录,english
        case 'cnhostrecord' : {$return = preg_match('/^[_a-zA-Z0-9]*([x{4e00}-x{9fa5}]*[-a-zA-Z0-9.]*)+[a-zA-Z0-9_]$/iu', $string); break;} //正确的主机记录,english chinese
        case 'domain'       : {$return = preg_match('/^[A-Za-z0-9][A-Za-z0-9-]+(.[A-Za-z0-9-]+){1,3}$/', $string); break;} //是否是域名
        case 'cndomain'     : {$return = (preg_match('/[x{4e00}-x{9fa5}]+/u', $string) && preg_match('/^([-a-zA-Z0-9.]*[x{4e00}-x{9fa5}]*[-a-zA-Z0-9.]*)+.(中国|公司|网络|CN|COM|NET)$/iu', $string)) ? TRUE : FALSE; break;}  //是否中文域名
        case 'mac'          : {$return = preg_match('/^[a-fA-Fd]{2}:[a-fA-Fd]{2}:[a-fA-Fd]{2}:[a-fA-Fd]{2}:[a-fA-Fd]{2}:[a-fA-Fd]{2}$/', $string); break;}
        case 'ipv6'         : {$return = preg_match('/^s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:)))(%.+)?s*$/', $string); break;}
    }
    gettype($return) == 'integer' && $return = $return == 0 ? FALSE : TRUE;
    return $return;
}