PHP ʖ²ἯTH º󍋼/A LVII. Mimetype Functions ½鉜 The functions in this module try to guess the content type and encoding of a file by looking for certain magic byte sequences at specific positions within the file. While this is not a bullet proof approach the heuristics used do a very good job. This extension is derivated from Apache mod_mime_magic, which is itself based on the file command maintaind by Ian F. Darwin. See the source code for further historic and copyright information. Шdz ΞШ͢²¿¿⎄¼þ¾ͿɒԼӈ뱾)չģ¿鵄֧³֡£ °²װ You must compile PHP with the configure switch --enable-mime-magic to get support for mime-type functions. The extension needs a copy of the magic.mime as distributed with the file command. This file also part of most recent Linux distributions and usually stored in the /usr/share/misc directory. ԋАʱŤփ բЩº¯ʽµĐЎªʜµ½ȫ¾ּA HREF="configuration.html#configuration.file" Ťփ΄¼þ php.ini µē°Ϭ¡£ Name Default Changeable mime_magic.magicfile "/usr/share/misc/magic.mime" PHP_INI_SYSTEM ׊Դ Ѝ ¸À©չģ¿鎴¶¨ҥȎºΗʔ´ Ѝ¡£ Ԥ¶¨ҥ³£ Ŀ¼ mime_content_type -- Detect MIME Content-type for a file º󍋼/A ưµ㼯A mhash ɏһ¼¶ mime_content_type