How to get posts by meta value in WordPress?

How to get posts by meta value in WordPress?

A more throughout example can be found in this answer. For more detailed guide regarding meta query follow this blog : http://www.codecanal.com/get-posts-meta-values/

How to get the ID of a post in WordPress?

So when you call get_the_ID function you get the ID of the current post in the loop. You can also get posts using get_posts function. The only difference between get_posts and WP_Query is that using get_posts you get an array of post objects. It is generally used for special cases like generating post navigations etc.

Do you need custom meta fields for WordPress?

If you are into developing custom themes for WordPress, you probably know how useful it can be to use custom meta fields in your posts. But only adding those fields is not enough. You need custom loops or functions to filter/get your posts using those meta values.

Where can I find the get posts function in WordPress?

You can easily grab the posts using WordPress’s built-in function called get_posts You can find more details about get_posts here https://developer.wordpress.org/reference/functions/get_posts/ Thanks for contributing an answer to WordPress Development Stack Exchange!

How to get post ID by meta value?

The first way that you can retrieve a post’s ID through it’s meta value is by using WP_Query. The only information you really need to know is the meta value for which you’re looking, although it also helps to have the post type handy.

Can you store multiple rows of post meta in WordPress?

WordPress permits you to store multiple rows of the same post meta for a single post, so you can get an array of data without needing to serialize it and store it in one key. To do this, you need to slightly change how you’re interacting with the post meta api here.

How to get posts by custom fields in WordPress?

You can download full code of the file advanced-search.php here. Each query by custom field will create a JOIN statement in SQL. So, if you have tens of custom fields, the performance of your code will decrease significantly. Therefore, if you see the query speed is too low, you optimize or cache that custom fields.

What is the purpose of the meta box in WordPress?

Its purpose is generating SQL code to query posts based on metadata. This parameter is an array of meta conditions. Each condition is an array where you need to set the meta key, meta value and the comparison. If the posts have meta values that satisfy the conditions, then they will be returned.

You need custom loops or functions to filter/get your posts using those meta values. In this post, we share with you a basic PHP code snippet for getting post id by meta value. If you need to use post id in a loop, the recommended way of using custom loops is the WP_Query method. This method doesn’t modify the default query so it is safer.

How to get posts with postmeta in PHP?

I could grab all post data in one query, then grab all relevant postmeta in another, and combine the meta with the post data in one resultset in PHP. Would that end up being quicker than an single ever-more-complex SQL query, if that’s even possible? I always think, “Give as much work as possible to the database.” Not sure on this one!

What does pre get posts do in WordPress?

In WordPress, pre_get_posts is an action that makes it possible to modify an existing WP_Query, before that query is actually run. pre_get_posts offers some solutions that are more performant than writing a custom WP_Query, and enables solutions to other problems that would be quite difficult otherwise.

Is the post meta information cached in memory?

Post meta information is automatically cached in memory for a standard WP_Query (and the main query), unless you specifically tell it not to do so by using the update_post_meta_cache parameter. Therefore, you should not be writing your own queries for this.

Are there integers in update _ post _ meta?

To go off of Johannes’ response, since it is a serialized array, if you happen to be storing something like user id’s (which was my case), you may need to handle it a little differently. So yes they are integers but through update_post_meta they were being saved as strings.

Is there way to build meta queries with arrays as a meta _ key?

Is there a way to build meta queries with arrays as a meta_key ? If the value in the database is a string and you want to feed the query several values:

How to query by Meta key in WordPress?

Step 2 You set meta_keyin your query to my_meta_key. This tells WordPress to query for posts that have that key. Step 3 Set orderbyin your query to meta_value_num. This tells WordPress to not only query posts with my_meta_key, but to also order numerically by that key. That query argument is the only place you will ever see or use meta_value_num.

Is the GET POST meta function case sensitive?

Please note that if a db collation is case insensitive (has with suffix _ci) then update_post_meta and delete_post_meta and get_posts () will update/delete/query the meta records with keys that are upper or lower case. However get_post_meta will apparently be case sensitive due to WordPress caching.

How to generate order by Meta key in WordPress?

Step 1 Assign whatever value you want to your meta key, let’s call it my_meta_key, for each post to generate whatever order you want. Step 2 You set meta_keyin your query to my_meta_key. This tells WordPress to query for posts that have that key.