解决wordpress未能与站点联系致命错误，PHP修改被回滚-WordPress主题

摘要：很多站长在调整wordpress主题时，习惯通过外观－编辑进行源代码的调整和修改，这样调整起来比ftp上传文件方便很多，...

很多站长在调整wordpress主题时，习惯通过外观－编辑进行源代码的调整和修改，这样调整起来比ftp上传文件方便很多，但是在更新最新版的wordpress程序后，再次调整一些php代码文件，就会出现“未能与站点联系来检查致命错误，因此PHP修改已被回滚。您需要采用其他方式(如SFTP)上传您修改的PHP文件。”的提示。

解决方案

找到wp-admin/includes/file.php文件，删除492-599行的如下代码：
这个调整方法仅仅是一个临时替代方式，因为如果wordpress程序更新核心的wp-admin内的文件都会被替换掉。

if ( $is_active && 'php' === $extension ) {
 
		$scrape_key = md5( rand() );
		$transient = 'scrape_key_' . $scrape_key;
		$scrape_nonce = strval( rand() );
		set_transient( $transient, $scrape_nonce, 60 ); // It shouldn't take more than 60 seconds to make the two loopback requests.
 
		$cookies = wp_unslash( $_COOKIE );
		$scrape_params = array(
			'wp_scrape_key' => $scrape_key,
			'wp_scrape_nonce' => $scrape_nonce,
		);
		$headers = array(
			'Cache-Control' => 'no-cache',
		);
 
		// Include Basic auth in loopback requests.
		if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) {
			$headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) );
		}
 
		// Make sure PHP process doesn't die before loopback requests complete.
		@set_time_limit( 300 );
 
		// Time to wait for loopback requests to finish.
		$timeout = 100;
 
		$needle_start = "###### wp_scraping_result_start:$scrape_key ######";
		$needle_end = "###### wp_scraping_result_end:$scrape_key ######";
 
		// Attempt loopback request to editor to see if user just whitescreened themselves.
		if ( $plugin ) {
			$url = add_query_arg( compact( 'plugin', 'file' ), admin_url( 'plugin-editor.php' ) );
		} elseif ( isset( $stylesheet ) ) {
			$url = add_query_arg(
				array(
					'theme' => $stylesheet,
					'file' => $file,
				),
				admin_url( 'theme-editor.php' )
			);
		} else {
			$url = admin_url();
		}
		$url = add_query_arg( $scrape_params, $url );
		$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );
		$body = wp_remote_retrieve_body( $r );
		$scrape_result_position = strpos( $body, $needle_start );
 
		$loopback_request_failure = array(
			'code' => 'loopback_request_failed',
			'message' => __( 'Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.' ),
		);
		$json_parse_failure = array(
			'code' => 'json_parse_error',
		);
 
		$result = null;
		if ( false === $scrape_result_position ) {
			$result = $loopback_request_failure;
		} else {
			$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );
			$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );
			$result = json_decode( trim( $error_output ), true );
			if ( empty( $result ) ) {
				$result = $json_parse_failure;
			}
		}
 
		// Try making request to homepage as well to see if visitors have been whitescreened.
		if ( true === $result ) {
			$url = home_url( '/' );
			$url = add_query_arg( $scrape_params, $url );
			$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );
			$body = wp_remote_retrieve_body( $r );
			$scrape_result_position = strpos( $body, $needle_start );
 
			if ( false === $scrape_result_position ) {
				$result = $loopback_request_failure;
			} else {
				$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );
				$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );
				$result = json_decode( trim( $error_output ), true );
				if ( empty( $result ) ) {
					$result = $json_parse_failure;
				}
			}
		}
 
		delete_transient( $transient );
 
		if ( true !== $result ) {
 
			// Roll-back file change.
			file_put_contents( $real_file, $previous_content );
			if ( function_exists( 'opcache_invalidate' ) ) {
				opcache_invalidate( $real_file, true );
			}
 
			if ( ! isset( $result['message'] ) ) {
				$message = __( 'An unidentified error has occurred.' );
			} else {
				$message = $result['message'];
				unset( $result['message'] );
			}
			return new WP_Error( 'php_error', $message, $result );
		}
	}

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if ( $is_active && 'php' === $extension ) {

$scrape_key = md5( rand() );

$transient = 'scrape_key_' . $scrape_key;

$scrape_nonce = strval( rand() );

set_transient( $transient, $scrape_nonce, 60 ); // It shouldn't take more than 60 seconds to make the two loopback requests.

$cookies = wp_unslash( $_COOKIE );

$scrape_params = array(

'wp_scrape_key' => $scrape_key,

'wp_scrape_nonce' => $scrape_nonce,

);

$headers = array(

'Cache-Control' => 'no-cache',

);

// Include Basic auth in loopback requests.

if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) {

$headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) );

}

// Make sure PHP process doesn't die before loopback requests complete.

@set_time_limit( 300 );

// Time to wait for loopback requests to finish.

$timeout = 100;

$needle_start = "###### wp_scraping_result_start:$scrape_key ######";

$needle_end = "###### wp_scraping_result_end:$scrape_key ######";

// Attempt loopback request to editor to see if user just whitescreened themselves.

if ( $plugin ) {

$url = add_query_arg( compact( 'plugin', 'file' ), admin_url( 'plugin-editor.php' ) );

} elseif ( isset( $stylesheet ) ) {

$url = add_query_arg(

array(

'theme' => $stylesheet,

'file' => $file,

admin_url( 'theme-editor.php' )

);

} else {

$url = admin_url();

}

$url = add_query_arg( $scrape_params, $url );

$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );

$body = wp_remote_retrieve_body( $r );

$scrape_result_position = strpos( $body, $needle_start );

$loopback_request_failure = array(

'code' => 'loopback_request_failed',

'message' => __( 'Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.' ),

);

$json_parse_failure = array(

'code' => 'json_parse_error',

);

$result = null;

if ( false === $scrape_result_position ) {

$result = $loopback_request_failure;

} else {

$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );

$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );

$result = json_decode( trim( $error_output ), true );

if ( empty( $result ) ) {

$result = $json_parse_failure;

}

// Try making request to homepage as well to see if visitors have been whitescreened.

if ( true === $result ) {

$url = home_url( '/' );

$url = add_query_arg( $scrape_params, $url );

$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );

$body = wp_remote_retrieve_body( $r );

$scrape_result_position = strpos( $body, $needle_start );

if ( false === $scrape_result_position ) {

$result = $loopback_request_failure;

} else {

$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );

$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );

$result = json_decode( trim( $error_output ), true );

if ( empty( $result ) ) {

$result = $json_parse_failure;

}

delete_transient( $transient );

if ( true !== $result ) {

// Roll-back file change.

file_put_contents( $real_file, $previous_content );

if ( function_exists( 'opcache_invalidate' ) ) {

opcache_invalidate( $real_file, true );

}

if ( ! isset( $result['message'] ) ) {

$message = __( 'An unidentified error has occurred.' );

} else {

$message = $result['message'];

unset( $result['message'] );

}

return new WP_Error( 'php_error', $message, $result );

}

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解决wordpress未能与站点联系致命错误，PHP修改被回滚

解决方案

作者: 大挖酱

推荐文章列表

WordPress网站SEO

WordPress主题定制

WordPress仿站

WordPress建站教程

最新文章

热门文章排名

联系作者Q: 8413708 WX: zdmin7

支付宝扫一扫

微信扫一扫

WordPress
网站SEO

WordPress
主题定制

WordPress
仿站

WordPress
建站教程