使用 if is_page() Wordpress 条件语句
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Using if is_page() Wordpress conditional statement
提问by Amit
I'm trying to have different pictures on every one of my pages built on wordpress.
我试图在我基于 wordpress 的每一页上都有不同的图片。
So I have the following in my index.php file, archive.php file, page.php file, etc:
所以我的 index.php 文件、archive.php 文件、page.php 文件等中有以下内容：
<img src="<?php bloginfo('template_url'); ?>/images/<?php echo $toppic; ?>" alt="page1" id="mainPageImg" />
Now, in my page.php file, I have the following:
现在，在我的 page.php 文件中，我有以下内容：
<?php
// TOP PICTURE DEFINITIONS
if ( is_home() ) {
$toppic == 'page1.png';
}
if ( is_page('articles') ) {
$toppic == 'page2.png';
}
?>
How come this does not work? I tried it with one equal (=) sign...
这怎么行不通？我用一个等号 (=) 试过了...
EDIT: If I define $toppic at the top, for example, in the index.php file as follows:
编辑：如果我在顶部定义 $toppic，例如，在 index.php 文件中，如下所示：
<?php $toppic = 'page1.png'; ?>
Then it works. So therefore, it must be something that has to do with the conditional if is_page/is_home statements. Any ideas?
然后它起作用了。因此，它必须与条件 if is_page/is_home 语句有关。有任何想法吗？
Thanks! Amit
谢谢！阿米特
回答by Amit
Okay, I found the answer.
好的，我找到了答案。
This is what needs to be done. For the articles (blog) page, at the top section you need to place the following:
这是需要做的。对于文章（博客）页面，您需要在顶部放置以下内容：
<?php // TOP PICTURE DEFINITION FOR ARTICLES PAGE
if ( is_home() ) {
$toppic = 'page1.png';
}
?>
Then, in your page.php file, you can control the picture at the top for all other pages (except 404, where you'd need to put a is_404() in your 404.php. So this is what it looks like:
然后，在你的 page.php 文件中，你可以控制所有其他页面顶部的图片（除了 404，你需要在 404.php 中放置一个 is_404()。所以它是这样的：
<?php
// TOP PICTURE DEFINITIONS
if ( is_page('english') ) {
$toppic = 'page1.png';
}
if ( is_page('aboutus') ) {
$toppic = 'page1.png';
}
if ( is_page('newspaper') ) {
$toppic = 'page1.png';
}
else {
$toppic = 'page1.png';
}
?>
And finally, in order to implement this, use the following HTML/php syntax:
最后，为了实现这一点，请使用以下 HTML/php 语法：
<img src="<?php bloginfo('template_url'); ?>/images/<?php echo $toppic ?>" alt="page1" id="mainPageImg" />
That's all. Phew. Finally got it to work :) Had to do it for a client, too!
就这样。呼。终于让它工作了:) 也必须为客户做！
回答by Jesse Dhillon
The slug for your Articles page has to be defined as articles. This is set in the edit page interface, see these directions.
您的文章页面的 slug 必须定义为articles. 这是在编辑页面界面中设置的，参见这些说明。
