* Archive for Apr, 2008 *
比较和逻辑运算符
|
符 号 |
含 义 |
类 型 |
示 例 |
|
= = |
等于 |
比较 |
$x == $y |
|
!= |
不等于 |
比较 |
$x != $y |
|
< |
小于 |
比较 |
$x < $y |
|
> |
大于 |
比较 |
$x > $y |
|
<= |
小于或等于 |
比较 |
$x <= $y |
|
>= |
大于或等于 |
比较 |
$x >= $y |
|
! |
非 |
逻辑 |
!$x |
|
&& |
与 |
逻辑 |
$x && $y |
|
|| |
或 |
逻辑 |
$x || $y |
|
XOR |
异或 |
逻辑 |
$x XOR $y |
Finally, I’ve fixed the problem of language recognition.
Before, my site can not filter the posts very well in a language which is determined by the browser’s language setting to show on the homepage.
When I use the code :
<?php if ($_SERVER["HTTP_ACCEPT_LANGUAGE"] != “zh-CN”) {query_posts(’cat=57,16′);} ?>
in homepage, the posts can be filtered correctly in IE7: If your browser’s language setting is zh-CN, the homepage will show all the posts, else, the homepage will show all the posts in category ID 57/16.
But in IE6 or FireFox, it doesn’t work. Because the browser’s language setting is “zh-cn”, it’s not “zh-CN”.
So I added a condition :
<?php
$lan=&$_SERVER["HTTP_ACCEPT_LANGUAGE"];
if (($lan != “zh-CN”)&&($lan != “zh-cn”)) {query_posts(’cat=57,16′);}
?>
Maybe it is not very “beautiful”, but it works very well for me! So hope it can help you! Maybe one day, I can make it smarter!
Ps: The codition part is a general format in PHP code, but the execute part is only for Wordpress!



