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object-cache.php

<?php
defined( 'WPINC' ) || exit;
/**
 * LiteSpeed Object Cache
 *
 * @since  1.8
 */

! defined( 'LSCWP_OBJECT_CACHE' ) && define( 'LSCWP_OBJECT_CACHE', true );

// Initialize const `LSCWP_DIR` and locate LSCWP plugin foder
$lscwp_dir = ( defined( 'WP_PLUGIN_DIR' ) ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins' ) . '/litespeed-cache/';
// Use plugin as higher priority than MU plugin
if ( ! file_exists( $lscwp_dir . 'litespeed-cache.php' ) ) {
	// Check if is mu plugin or not
	$lscwp_dir = ( defined( 'WPMU_PLUGIN_DIR' ) ? WPMU_PLUGIN_DIR : WP_CONTENT_DIR . '/mu-plugins' ) . '/litespeed-cache/';
	if ( ! file_exists( $lscwp_dir . 'litespeed-cache.php' ) ) {
		$lscwp_dir = '';
	}
}

$data_file = WP_CONTENT_DIR . '/.litespeed_conf.dat';
$lib_file = $lscwp_dir . 'src/object.lib.php';

// Can't find LSCWP location, terminate object cache process
if ( ! $lscwp_dir || ! file_exists( $data_file ) || ( ! file_exists( $lib_file ) ) ) {
	if ( ! is_admin() ) { // Bypass object cache for frontend
		require_once ABSPATH . WPINC . '/cache.php';
	}
	else {
		$err = 'Can NOT find LSCWP path for object cache initialization in ' . __FILE__;
		error_log( $err );
		add_action( is_network_admin() ? 'network_admin_notices' : 'admin_notices', function() use ( &$err ) {
			echo $err;
		} );
	}
}
else {
	if ( ! LSCWP_OBJECT_CACHE ) { // Disable cache
		wp_using_ext_object_cache(false);
	}
	// Init object cache & LSCWP
	else if ( file_exists( $lib_file ) ) {
		require_once $lib_file;
	}
}

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