Create WordPress custom fields programmatically? Well, we have a complete guide that includes several additional options. WordPress is the most popular CMS in the world for many reasons. But the most relevant point is that it can be highly customized. The custom field can also customize many elements of one of the WordPress websites. WordPress has so many customizable features that you can programmatically add custom fields to your website.
What is a custom field? Custom fields are attached to posts or pages and store additional information for the site. It can also be associated with any type of post. Therefore, you can also collect information related to products, comments, or custom post types. They are stored in the database of the WordPress website under the wp_posteta table. These include meta_id, post_id, meta_key and meta_value parameters. All types of data can also be stored in custom fields. It can also be used in front-end and back-end users or other PHP scripts.
Why create custom fields in WordPress? Custom fields can be used to meet a wide range of needs. Custom fields can be useful whenever you need to add additional information related to a post. However, most developers use custom fields to add new features to the site. One of the most useful applications is to use it on the front end so that users can fill out forms. However, here are some examples of custom fields that can be used: Post \
Now that we are familiar with the importance of custom fields in WordPress, let’s take a look at how to add these fields. How do I add custom fields to WordPress? By default, you can add custom fields to posts when editing in the editor. Just activate and scroll down on the page Options tab to find the custom field meta box. To create a custom field manually, simply click add custom field and enter a name and value. However, if you are here, you may be looking for how to programmatically create word press custom fields. Let’s get started
How to programmatically create WordPress custom fields? If you have the basic skills and knowledge of programming, you can easily create custom fields in word press programmatically. However, before you begin, back up your web site, programmatically create subtopics, or use one of the subtopics plug-ins. We will modify the details on the website, and these changes may be cleared when updating the WordPress theme. However, if you use subtopics, the customization of these files will not be affected even after the WordPress theme is updated.
If you don’t like to change the theme file directly, you can also use plug-ins, such as code fragments. For all that
This tutorial will use this topic because the subthemes are easier. 1. functions. After creating an access sub topic in the PHP topic file, function. You can add code snippets to the PHP theme file to create custom fields. Navigate to shapes > Theme Editor and implement the function on the WordPress dashboard. Open the PHP file. Then add code snippets at the bottom of the editor and update the file.
This tutorial uses the divi theme. However, the display of the theme editor on the website may vary depending on the theme you use. 2. Add a code segment in the topic editor. The add_post_meta() function is the function we want to use. Three parameters are used: the ID of the post or page, the name and value of the custom field. The fourth optional parameter can be used to verify whether the custom field already exists. Therefore, adding custom fields is a function of the sub topic. Adding the following lines to a PHP file is as simple as adding them.
add_post_meta（460，“custom_field_name”，“value”，true）； This adds a custom field to the post with ID 460. This demo simply names the custom field \
Fortunately, we can further improve to obtain an acceptable solution. The publish_post () hook is useful in this case because it is triggered only when a post is posted. Add_action (\
Function add_custom_field_automatic ($post_id){
if(!wp_is_post_revision($post_ID)) {
add_post_meta（$post_ID，“meta_field”，“55”，true）；
}
}$post_id global variable, so this applies to all new posts.
If WordPress creates custom fields in WordPress in the way of custom field update programming, you can also update them to similar code snippets. You can use the update_post_meta() function to update custom fields. It can also be used when updating posts, so use the same hook as the previous script. Functions of the website. Just add the following code snippet to the PHP file: Add_action (\
Function update_custom_field_automatic ($post_id){
if(!wp_is_post_revision($post_ID)) {
update_post_meta（$post_ID，“meta_field”，20）；
}
}This changes the value of the previously created custom field from 55 to 20.
Update_post_meta() can also be used as the add_post_meta() function. If it does not exist, you can create a new custom field. The use of code blocks to delete custom fields in WordPress is not limited to creating and updating custom fields in WordPress. After you programmatically create WordPress custom fields, you may need to delete them. Allows the deletion of all custom fields with a given name (key)
The function is delete_post_meta_by_key (\
Function remove_custom_field_automatic (){
Delete_post_meta_by_key (\
}To remove custom fields for a particular post, you can use the delete_post_meta() function. It can also be used when assigning specific values in custom fields. It works in a similar way to the previous snipt. However, it provides greater flexibility to delete specific custom fields. Publish (\
Function delete_custom_field_automatic ($post_id){
if(!wp_is_post_revision($post_ID)) {
delete_post_meta（$post_ID，“meta_field”）；
}
}This script will delete the custom field named \
