晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : /home/rainic/www/oldTZh/wp-content/plugins/elementor/modules/atomic-widgets/cache-validity.php
<?php

namespace Elementor\Modules\AtomicWidgets;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}


class Cache_Validity {
	const CACHE_KEY_PREFIX = 'elementor_atomic_cache_validity-';

	public function is_valid( array $keys ): bool {
		$root = array_shift( $keys );

		$state_item = get_option( self::CACHE_KEY_PREFIX . $root, null );

		if ( ! empty( $keys ) ) {
			if ( ! $state_item ) {
				return false;
			}

			$state_item = $this->get_nested_item( $state_item, $keys );
		}

		return $state_item ? $state_item['state'] : false;
	}

	public function get_meta( array $keys ) {
		$root = array_shift( $keys );

		$state_item = get_option( self::CACHE_KEY_PREFIX . $root, null );

		if ( ! $state_item ) {
			return null;
		}

		$state_item = $this->get_nested_item( $state_item, $keys );

		return isset( $state_item['meta'] ) ? $state_item['meta'] : null;
	}

	public function invalidate( array $keys ): void {
		$root = array_shift( $keys );

		$state_item = get_option( self::CACHE_KEY_PREFIX . $root, [
			'state' => false,
			'meta' => null,
			'children' => [],
		] );

		$current_item = &$state_item;

		if ( ! empty( $keys ) ) {
			$current_item = &$this->get_nested_item( $current_item, $keys );
		}

		$current_item['state'] = false;
		$current_item['meta'] = null;

		$this->invalidate_nested_items( $current_item );

		update_option( self::CACHE_KEY_PREFIX . $root, $state_item );
	}

	public function validate( array $keys, $meta = null ): void {
		$root = array_shift( $keys );

		$state_item = get_option( self::CACHE_KEY_PREFIX . $root, [
			'state' => false,
			'children' => [],
		] );

		$current_item = &$state_item;

		if ( ! empty( $keys ) ) {
			$current_item = &$this->get_nested_item( $current_item, $keys );
		}

		$current_item['state'] = true;
		$current_item['meta'] = $meta;

		update_option( self::CACHE_KEY_PREFIX . $root, $state_item );
	}


	/**
	 * @param array{state: boolean, meta: array<string, mixed> | null, children: array<string, self>} $root_item
	 * @param array<string> $keys
	 * @return array{state: boolean, meta: array<string, mixed> | null, children: array<string, self>}
	 */
	private function &get_nested_item( array &$root_item, array $keys ): array {
		$current_item = &$root_item;

		while ( ! empty( $keys ) ) {
			$key = array_shift( $keys );

			if ( ! isset( $current_item['children'][ $key ] ) ) {
				$current_item['children'][ $key ] = [
					'state' => false,
					'meta' => null,
					'children' => [],
				];
			}

			$current_item = &$current_item['children'][ $key ];
		}

		return $current_item;
	}

	private function invalidate_nested_items( array &$root_item ): void {
		foreach ( $root_item['children'] as &$child_item ) {
			$child_item['state'] = false;
			$child_item['meta'] = null;

			$this->invalidate_nested_items( $child_item );
		}
	}
}

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