php header 图片 格式,PHP输出图片的header格式 header中Content-type 的种类

PHP在输出图片格式时，需要加上header("content-type:image/jpeg");

Content-type:image/jpeg 的意思是告诉浏览器这个文件是个图片不是html,不能再定义为html文件的Title 所以不能直接在地址栏输入地址去访问该页，如果不加这段，IE下或许可以正常显示，但其他浏览器均显示乱码。 如果要有title, 就写html文件,在程序输出头header("Content-type:text/html");默认这个是可以不用写的。

Content-type 的说明：

‘hqx’ -> ‘application/mac-binhex40′,

‘cpt’ -> ‘application/mac-compactpro’,

‘doc’ -> ‘application/msword’,

‘bin’ -> ‘application/octet-stream’,

‘dms’ -> ‘application/octet-stream’,

‘lha’ -> ‘application/octet-stream’,

‘lzh’ -> ‘application/octet-stream’,

‘exe’ -> ‘application/octet-stream’,

‘class’ -> ‘application/octet-stream’,

‘so’ -> ‘application/octet-stream’,

‘dll’ -> ‘application/octet-stream’,

‘oda’ -> ‘application/oda’,

‘pdf’ -> ‘application/pdf’,

‘ai’ ->