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post-meta

WordPress is stripping escape backslashes from JSON strings in post_meta

Doesn’t look like there’s any way to avoid it. The update_metadata() function, which is ultimately responsible for saving the meta, explicitly runs a stripslashes_deep() on the meta value. This function will even strip slashes from array elements, if the value were an array. Theres a filter that’s run AFTER that called sanitize_meta, which you could … Read more

Categories post-meta Tags json, post-meta

How to save an array with one metakey in postmeta?

You don’t need to loop through the values. Just use update_post_meta($post_ID, {key}, {array of vals}), it should do! <?php $poddata = Array( ‘pod_id’ => $this->pod_id, ‘url’ => $this->url, ‘name’ => $this->name, ‘description’ => $this->description, ‘service’ => $this->service, ‘status’ =>$this->status, ‘price’ => $this->price ); //Update inserts a new entry if it doesn’t exist, updates otherwise update_post_meta($post_ID, … Read more

Categories post-meta Tags post-meta

How to extract data from a post meta serialized array?

Use unserialize() to convert it into an array. $mydata=”a:5:{s:9:”engine_id”;a:1:{i:0;s:9:”300000225″;}s:15:”transmission_id”;a:1:{i:0;s:6:”257691″;}s:5:”plant”;a:1:{i:0;s:23:”Oshawa, Ontario, Canada”;}s:15:”Manufactured in”;a:1:{i:0;s:6:”CANADA”;}s:22:”Production Seq. Number”;a:1:{i:0;s:6:”151411″;}}”; $mydata = unserialize($mydata); echo $mydata[‘Manufactured in’][0]; Edit– Related thought- something to keep in mind when storing meta data serialized like this is that you limit your ability to use that data in queries, if that’s a concern for you. for instance, … Read more

Categories post-meta Tags array, post-meta

Explanation of update_post_(meta/term)_cache

Object cache everywhere WordPress tries to reduce the number of database queries as much as possible. For example, anytime you get a meta field or a taxonomy field, before querying the database, WordPress looks if that that was already queried and stored in cache, and returns it from there instead of querying the database. The … Read more

Categories post-meta Tags cache, core, customization, post-meta, terms

Get posts by meta value

What you are asking for is a meta_query $args = array( ‘meta_key’ => ‘custom-meta-key’, ‘meta_query’ => array( array( ‘key’ => ‘cp_annonceur’, ‘value’ => ‘professionnel’, ‘compare’ => ‘=’, ) ) ); $query = new WP_Query($args); All of the information you need is in the Codex.

Categories post-meta Tags post-meta

Most efficient way to get posts with postmeta

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. How the meta caching works for normal queries: If the update_post_meta_cache parameter to the … Read more

Categories post-meta Tags post-meta, sql

How do I retrieve the slug of the current page?

Use the global variable $post: <?php global $post; $post_slug = $post->post_name; ?>

Categories post-meta Tags post-meta, slug
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