February 12, 2011 
Definition:
function wp_count_posts( $type = 'post', $perm = '' ) {}
Count number of posts of a post type and is user has permissions to view.
This function provides an efficient method of finding the amount of post’s type a blog has. Another method is to count the amount of items in get_posts(), but that method has a lot of overhead with doing so. Therefore, when developing for 2.5+, use this function instead.
Parameters
- string $type: Optional. Post type to retrieve count
- string $perm: Optional. ‘readable’ or empty.
Return values
returns:of posts for each status
Source code
function wp_count_posts( $type = 'post', $perm = '' ) {
global $wpdb;
$user = wp_get_current_user();
$cache_key = $type;
$query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s";
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