wp_cache_set( int|string $key, mixed $data, string $group = '', int $expire )

Saves the data to the cache.


Description Description

Differs from wp_cache_add() and wp_cache_replace() in that it will always write data.

See also See also


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Parameters Parameters

$key

(int|string) (Required) The cache key to use for retrieval later.

$data

(mixed) (Required) The contents to store in the cache.

$group

(string) (Optional) Where to group the cache contents. Enables the same key to be used across groups.

Default value: ''

$expire

(int) (Optional) When to expire the cache contents, in seconds. Default 0 (no expiration).


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Return Return

(bool) True on success, false on failure.


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Source Source

File: wp-includes/cache.php

function wp_cache_set( $key, $data, $group = '', $expire = 0 ) {
	global $wp_object_cache;

	return $wp_object_cache->set( $key, $data, $group, (int) $expire );
}


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Changelog Changelog

Changelog
Version Description
2.0.0 Introduced.

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User Contributed Notes User Contributed Notes

  1. Skip to note 1 content
    Contributed by Mayeenul Islam
    function prefix_get_post_count( $post_status = 'publish' ) {
        $cache_key = 'prefix_post_count_'. $post_status;
        $_posts = wp_cache_get( $cache_key );
        if ( false === $_posts ) {
            $_posts = $wpdb->get_var(
                        $wpdb->prepare(
                            "SELECT COUNT(*) FROM $wpdb->posts WHERE post_type = 'post' AND post_status = %s",
                            $post_status
                        ));
     
            wp_cache_set( $cache_key, $_posts );
        }
     
        return $_posts;
    }

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