php Wordpress 向 the_content() 添加过滤器
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Wordpress add filter to the_content()
提问by CyberJunkie
I'm trying to add a code to the_content()function. I tried the following
我正在尝试添加代码以the_content()发挥作用。我尝试了以下
function add_something($content) {
echo "test";
}
add_filter( 'the_content', 'add_something', 6);
After adding the filter my posts return just the echo testwithout the content. How can I execute my custom code without omitting the content?
添加过滤器后，我的帖子只返回test没有内容的回声。如何在不忽略内容的情况下执行我的自定义代码？
回答by mario
I would surmise you need something like that (if it's indeed a filter callback):
我猜你需要这样的东西（如果它确实是一个过滤器回调）：
function add_something($content) {
return "test" . $content;
}
Seems what the docs say: http://wordpress.org/support/topic/add-something-to-the_content
似乎文档说的是：http: //wordpress.org/support/topic/add-something-to-the_content
回答by Friso Kluitenberg
you omitted the return statement.
你省略了 return 语句。
function add_something($content) {
echo "test";
... change $content ......
return $content;
}
Be advised that if you want to modify the content, you must append it to the variable. Using echo will output 'test' at the time the script is called. It will not append or prepend it to the_content()
请注意，如果要修改内容，必须将其附加到变量中。使用 echo 将在调用脚本时输出 'test'。它不会将其附加或添加到 the_content()
