Base64编码,我想大家应该很熟悉了,早期的电子邮件编码,现在的网页图片编码等,都采用了base64编码来对字符串或者二进制数据流进行转码,以便于传输,在脚本模型中,分别提供了以下几个内置函数,以支持这些操作:

base64('123456',true/false); |<?base64('123456',true);'|'base64('MTIzNDU2',false);?>

<?

   $f:=Base64toFile('iVBORw0KGgoAAAANSUhEUgAAABMAAAARCAYAAAA/mJfHAAA'

   +'Cz0lEQVQ4jXVUz2sTQRh9s7M/kiba1KZSCq0HCQgteLMexINUL6KCIngQpFLBg/+'

   +'A3kTPIiheFJGi4klPKl6sF7G11Wqp1FKkbWKsSW2yTTfNZrM74+xOzKatHfKYH+R7'

   +'+77vfTOkWq1ybBo/F6cwOfoM8zNvYRWyqJSKYDUPED/CDXT3HseZSzfR2Z1qxK'

   +'yWqiCO4zTIOOf4/GEYlrmAzPc3yGemARcBSfO8vs4Rj7RgYOgu9h85F8QWijZU27'

   +'Yb7F8/DiOqE2Smn8AuFbDT0AG1TkTrswJEwRGjHibuXwb1XPQdPQ/PZSC5XC5Q'

   +'ll14j4r5DempR3DKpgzcBopQGKdKsHZFYodvjMCN7JHKGPOw9OMVUJ4FdcuIUk'

   +'3kjG3hi0wYFIpYcMIx9/g6egYfSLKVpS9QaxlU1+YRoSIvJtPZAiJBFKdqgYq1vrdn3'

   +'qG4lIVaqVRQ+j0GpZKDHhQoDArQPIj0ICZS9Ml0Rf6BR2NIT45IMtfKIOJY4uO0bm'

   +'sTGlZLcM93UhNkGgxG5LmhYjE9J8k8uwziKfKzPhjCddMZF4gINSpT0aoaUF0i0xf'

   +'OUtsRparV4LEdcKs+mbLROQ8b9sT1U6SiGBQaMUL1jjAx2QlF13VoiT5oXg060SW'

   +'UOshGaAK2Q5EUNQITPcj1YGarZbB9/VC7urrgJk+gmn+KWEtcqqj9p7/qZy2EoiN'

   +'iyDMmla1FdyO2txdqKiXvV8EcQlv6hci/LQzeDm5oDlv+BX7hmtiSoHzBaO2/gqKbF'

   +'Pl7MoV/4JuApvVaBWbqABIDp0BVJSRTRLPGTz+EWRa9ZllhANuGaLmAwq4eJK7'

   +'eEs4IhwUZYYwFgv0XI5AtLu7q69vQJ54jFmsXvdAeumwL1fk8rKIF9+QgEmcvNtp'

   +'wdCwL8mdFvCd8y5MmrpaJ9fGXILOfQMyiICTg8Q6g9yBih45B8x2tD/8tu3NvHH8'

   +'B9EZlK6ozLtkAAAAASUVORK5CYII=',

      formatdatetime('yyyyMMddhhmmsszzz".jpg"',now));

   if $f<>'' then begin

      '文件保存成功,文件名为:'$f;' <img src="'$f'">'

   end else begin

      '文件保存失败。';

   end;

?>

Base64toFile的应用场景,比如手机app端提交一张图片上来,服务端接收并保存成图片,然后返回可访问的路径,比如app中上传自定义人物头像,上传照片等,当然也可以上传其它类型的文件。关于文件上传这块,脚本模型还提供了单独的接口,请参考upfile.html这个演示。