Wordpress如何将文章摘录长度设置为100个字符和200个字符 [英] Wordpress how to set the post excerpt length to 100 characters and 200 characters

问题描述

示例我想在两个位置使用 the_excerpt.在 functions.php 我添加

Example I want use the_excerpt in two locations. On functions.php I add

function new_excerpt_length($length) {
    return 100;
}
add_filter('excerpt_length', 'new_excerpt_length');

问题.

如何让另一个函数接受另一个 the_excerpt 将是 200 个字符?

How to make another function to accept another the_excerpt will be 200 characters?

或其他解决方案.

如何制作这样的东西..动态 the_excerpt()

How to make something like this.. Dynamic the_excerpt()

1. 选项 1 = the_excerpt() 限制为 100 个字符
2. 选项 2 = the_excerpt() 限制为 200 个字符
3. 选项 3 = the_excerpt() 限制为 300 个字符

1. Option 1 = the_excerpt() limit to 100 chars
2. Option 2 = the_excerpt() limit to 200 chars
3. Option 3 = the_excerpt() limit to 300 chars

推荐答案

你是否通读了 the_excerpt() 的 WordPress 文档

Have you read through the WordPress documentation for the_excerpt()

http://codex.wordpress.org/Function_Reference/the_excerpt

您似乎只能通过您提到的过滤器使用 new_excerpt_length() 覆盖 excerpt_length().

It appears that you can only override the the excerpt_length() with new_excerpt_length() via filters as you mentioned.

所以也许你可以修改现有的 the_excerpt 函数来接受一个参数 $length，其中默认值 = null.如果您熟悉 PHP，您就会知道不必向 the_excerpt() 传递任何参数，在这种情况下，$length 将默认为 null 并且其功能就像 $length 从未传递给它一样，这意味着 the_excerpt() 的所有当前用法将继续正常工作.如果您想以不同的长度打印摘录，请调用 the_excerpt(someOtherLength);

So perhaps you can modify existing the_excerpt function to take a parameter $length, where the default value = null. If you are familiar with PHP you know that you don't have to pass any parameters to the_excerpt(), in which case $length will default to null and function as if $length was never passed to it, which means all current usages of the_excerpt() will continue working as normal. and if you want print your excerpt at a different length then call the_excerpt(someOtherLength);

它看起来像这样.

function the_excerpt($length=null) {
     if($length != null) {
         // ignore default excerpt length with $length 
         // print the excerpt to $length 
     } else {
    // prints the excerpt to standard length specified by excerpt_length()
     }
}

如果您有任何问题，请告诉我.

Let me know if you have any problems.

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