Implement WordPress add_filter the_content(): A Beginner Guide

By | April 17, 2020

We can use add_filter on the_content() to control the output of wordpress post content, which is very useful if you plan to change the output of post. In this tutorial, we will introduce how to do.

Create a function to process the post content

Here is an example:

function show_content($content){

	if ( is_single() ){
		$content .= "<p>Written by tutorialexample.com</p>";
	}
	return $content;

}

where the parameter $content is the post content, we can modify it to change the output of post content.

In this example, we will add a text “<p>Written by tutorialexample.com</p>” at the end of the post content in wordpress single post page.

Add add_filter

Then we can use a add_filter on the the_content() function.

add_filter("the_content",show_content);

where show_content is the name of function above. In which we can process the content of post.

The effect is:

wordpress add_filter the_content

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