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 File : /home/rainic/www/oldTZh/wp-content/plugins/elementor-pro/core/integrations/actions/email/email.php
<?php

namespace ElementorPro\Core\Integrations\Actions\Email;

use ElementorPro\Core\Integrations\Actions\Action_Base;
use ElementorPro\Core\Integrations\Exceptions\Action_Failed_Exception;
use ElementorPro\Core\Integrations\Exceptions\Action_Validation_Failed_Exception;

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

class Email extends Action_Base {

	/**
	 * @param Email_Message $payload
	 *
	 * @return void
	 * @throws \Exception
	 */
	public function apply( $payload ) {
		// Set default headers.
		$headers = [
			sprintf( 'Content-Type: %s; charset=UTF-8', $payload->content_type ),
			sprintf( 'From: %s', $payload->from->format() ),
		];

		foreach ( $payload->reply_to as $recipient ) {
			$headers[] = sprintf( 'Reply-To: %s', $recipient->format() );
		}

		// Set CC headers.
		$cc_headers = [];

		foreach ( $payload->cc as $recipient ) {
			$cc_headers[] = sprintf( 'Cc: %s', $recipient->format() );
		}

		// Send email.
		$this->send_mail(
			$payload->to->format(),
			$payload->subject,
			$payload->body,
			implode( PHP_EOL, array_merge( $headers, $cc_headers ) ),
			$payload->attachments
		);

		// Send BCC emails.
		foreach ( $payload->bcc as $bcc ) {
			$this->send_mail(
				$bcc->format(),
				$payload->subject,
				$payload->body,
				implode( PHP_EOL, $headers ),
				$payload->attachments
			);
		}
	}

	/**
	 * @alias `$this->run()`
	 *
	 * @param Email_Message $payload
	 *
	 * @return void
	 *@throws \Exception
	 *
	 */
	public function send( Email_Message $payload ) {
		$this->run( $payload );
	}

	/**
	 * Validate the email message DTO.
	 *
	 * @param Email_Message $payload
	 *
	 * @throws \ElementorPro\Core\Integrations\Exceptions\Action_Validation_Failed_Exception
	 *
	 * @return void
	 */
	public function validate( $payload ) {
		$required_fields = [
			'from',
			'to',
			'subject',
			'body',
			'content_type',
		];

		foreach ( $required_fields as $field ) {
			if ( empty( $payload->{$field} ) ) {
				throw new Action_Validation_Failed_Exception(
					static::class,
					"`Email_Message::\${$field}` is required."
				);
			}
		}
	}

	/**
	 * Calls `wp_mail()`. Used for testing.
	 *
	 * @param mixed ...$args
	 *
	 * @return void
	 */
	protected function send_mail( ...$args ) {
		add_action( 'wp_mail_failed', [ $this, 'on_wp_mail_error' ] );

		wp_mail( ...$args );

		remove_action( 'wp_mail_failed', [ $this, 'on_wp_mail_error' ] );
	}

	/**
	 * Throw exception on `wp_mail()` error.
	 *
	 * @param \WP_Error $error
	 *
	 * @throws \ElementorPro\Core\Integrations\Exceptions\Action_Failed_Exception
	 *
	 * @return void
	 */
	public function on_wp_mail_error( \WP_Error $error ) {
		throw new Action_Failed_Exception( static::class, '`wp_mail()` cannot send email', $error );
	}
}

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