/**
* Delete the CRP cache.
*
* @param array $meta_keys
*/
function crp_cache_delete($meta_keys = array())
{
$default_meta_keys = crp_cache_get_keys();
if (!empty($meta_keys)) {
$meta_keys = array_intersect($default_meta_keys, (array) $meta_keys);
} else {
$meta_keys = $default_meta_keys;
}
foreach ($meta_keys as $meta_key) {
delete_post_meta_by_key($meta_key);
}
}
/**
* Function to clear the CRP Cache with Ajax.
*
* @since 1.8.10
*/
function crp_ajax_clearcache()
{
global $wpdb;
$meta_keys = crp_cache_get_keys();
$error = false;
foreach ($meta_keys as $meta_key) {
$count = $wpdb->query($wpdb->prepare("\n\t\t\tDELETE FROM {$wpdb->postmeta}\n\t\t\tWHERE meta_key = %s\n\t\t", $meta_key));
if (false === $count) {
$error = true;
} else {
$counter[] = $count;
}
}
/**** Did an error occur? ****/
if ($error) {
exit(json_encode(array('success' => 0, 'message' => __('An error occurred clearing the cache. Please contact your site administrator.\\n\\nError message:\\n', 'contextual-related-posts') . $wpdb->print_error())));
} else {
// No error, return the number of
exit(json_encode(array('success' => 1, 'message' => array_sum($counter) . __(' cached row(s) cleared', 'contextual-related-posts'))));
}
}