<? 怎么不行

enterprise

我在html里写PHP是用<?他不认，但用<? PHP 就可以，这是为什么啊？

wubai

; Allow the <? tag.  Otherwise, only <?php and <script>; tags are recognized.  
; NOTE: Using short tags should be avoided when developing applications or
; libraries that are meant for redistribution, or deployment on PHP
; servers which are not under your control, because short tags may not
; be supported on the target server. For portable, redistributable code,
; be sure not to use short tags.

就是这个了
short_open_tag = On