<?php
/**
* Cache Helper Class
*
* @class EVF_Cache_Helper
* @version 1.0.0
* @package EverestForms/Classes
*/
defined( 'ABSPATH' ) || exit;
/**
* EVF_Cache_Helper Class.
*/
class EVF_Cache_Helper {
/**
* Hook in methods.
*/
public static function init() {
add_action( 'admin_notices', array( __CLASS__, 'notices' ) );
}
/**
* Get prefix for use with wp_cache_set. Allows all cache in a group to be invalidated at once.
*
* @param string $group Group of cache to get.
* @return string
*/
public static function get_cache_prefix( $group ) {
$prefix = wp_cache_get( 'evf_' . $group . '_cache_prefix', $group );
if ( false === $prefix ) {
$prefix = 1;
wp_cache_set( 'evf_' . $group . '_cache_prefix', $prefix, $group );
}
return 'evf_cache_' . $prefix . '_';
}
/**
* Increment group cache prefix (invalidates cache).
*
* @param string $group Group of cache to clear.
*/
public static function incr_cache_prefix( $group ) {
wp_cache_incr( 'evf_' . $group . '_cache_prefix', 1, $group );
}
/**
* Set constants to prevent caching by some plugins.
*
* @param mixed $return Value to return. Previously hooked into a filter.
* @return mixed
*/
public static function set_nocache_constants( $return = true ) {
evf_maybe_define_constant( 'DONOTCACHEPAGE', true );
evf_maybe_define_constant( 'DONOTCACHEOBJECT', true );
evf_maybe_define_constant( 'DONOTCACHEDB', true );
return $return;
}
/**
* Notices function.
*/
public static function notices() {
if ( ! function_exists( 'w3tc_pgcache_flush' ) || ! function_exists( 'w3_instance' ) ) {
return;
}
$config = w3_instance( 'W3_Config' );
$enabled = $config->get_integer( 'dbcache.enabled' );
$settings = array_map( 'trim', $config->get_array( 'dbcache.reject.sql' ) );
if ( $enabled && ! in_array( '_evf_session_', $settings, true ) ) {
?>
<div class="error">
<p>
<?php
/* translators: 1: key 2: URL */
echo wp_kses_post( sprintf( __( 'In order for <strong>database caching</strong> to work with Everest Forms you must add %1$s to the "Ignored Query Strings" option in <a href="%2$s">W3 Total Cache settings</a>.', 'everest-forms' ), '<code>_evf_session_</code>', esc_url( admin_url( 'admin.php?page=w3tc_dbcache' ) ) ) );
?>
</p>
</div>
<?php
}
}
}
EVF_Cache_Helper::init();