offset

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am receiving the following error in PHP Notice undefined offset 1: in C:\wamp\www\includes\imdbgrabber.php line 36 Here is the PHP code that causes it: What does the error mean? 回答1: If preg_match did not find a match, $matches is an empty array. So you should check if preg_match found an match before accessing $matches[0] , for example: function get_match($regex,$content) { if (preg_match($regex,$content,$matches)) { return $matches[0]; } else { return null; } } 回答2: How to reproduce this error in PHP: Create an empty array and ask for

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have some text in elastic search containing urls in various formats ( http://www , www.) what I want to do is to search for all texts containing e.g., google.com. For the current search I use something like this query: query = { "query" : { "bool" : { "must" : [{ "range" : { "cdate" : { "gt" : dfrom , "lte" : dto } } }, { "query_string" :{ "default_operator" : "AND" , "default_field" : "text" , "analyze_wildcard" : "true" , "query" : searchString } } ] } }} But a query looking like google.com never returns any result, searching

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I have come across this warning I've not seen before: Warning: PDOStatement::execute() [pdostatement.execute]: SQLSTATE[HY093]: Invalid parameter number: mixed named and positional parameters in... Referring to the following PDO query (have simplified the function for ease of reading): $offset = 0 ; $limit = 12 ; function retrieve_search_posts ( $searchfield , $offset , $limit ){ $where = array (); $words = preg_split ( '/[\s]+/' , $searchfield ); array_unshift ( $words , '' ); unset ( $words [ 0 ]); $where_string = implode ( " OR

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm looking for a piece of code that can tell me the offset of a field within a structure without allocating an instance of the structure. IE: given struct mstct { int myfield ; int myfield2 ; }; I could write: mstct thing ; printf ( "offset %lu\n" , ( unsigned long )(& thing . myfield2 - & thing )); And get "offset 4" for the output. How can I do it without that "mstct thing" declaration/allocating one? I know that & does not always point at the first byte of the first field of the structure, I can account for that later. 回答1: How

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My open-source project was working just fine, until I started to work on it after 6 month of break. Updated to latest XAMPP, and start getting tons of weird errors, one of which is as: I have Input class, with a caller method as: server("SERVER_NAME"); ?> Easy right? Well, after I updated PHP with XAMPP, it just doesn't work [edit: it works, with the Warning message] - error is: PHP Warning: Illegal string offset 'SERVER_NAME' in S:\...\kernel\input.php on line 159 line, which corresponds to line of code: return $this->$name[ $this->clean_

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have this graph in gnuplot: I want to include totals for each of the three colored line graphs. One possibility is to replace the key with this: Can I plot this with a single label that switches colors? If not then I'd have to use six labels. In that case, how do I determine the coordinates of the labels given that the widths of the strings can vary? I could use a fixed width font and do some computation based on the number of digits in each of the totals but this seems tedious. Is there a more clever way to indicate totals in a graph? 回答1

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have two operations I want to perform, one the inverse of the other. I have a UNIX timestamp at UTC, say for instance, 1425508527. From this I want to get the year, month, day etc. given a UTC offset. EG. what is the year/month/day/time in (UTC -6 hours)? The answer is March 4, 2015 at 16:35:27. Without providing an offset (or offset zero) the answer should be March 4, 2015 at 22:35:27. Now I have the date at some location, along with the UTC offset. For instance March 4, 2015 at 16:35:27 and the offset (UTC -6 hours). The UNIX UTC

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The offsets informations of the group were stored in zookeeper before. Now, in the Kafka Cluster (0.10.x), the offsets informations are stored in the topic which's name is __consumer_offsets . But how could I get the offsets information of the group which I specified？ 回答1: For active groups, invoke command below to retrieve the offsets: bin/kafka-consumer-groups.sh --bootstrap-server broker1:9092 --describe --group test-consumer-group For inactive groups, first get the target offset topic partition number by calculating Math.abs(groupId

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using the KafkaMessageListenerContainer for consuming from the kafka topic, I have an application logic to process each record which is dependent on other micro services as well. I am now manually committing the offset after each record is processed. But if I the application logic fails I need to seek to the failed offset and keep processing it until it's succeeds. For that I need to do a run time manual seek of the last offset. Is this possible with the KafkaMessageListenerContainer yet ? 回答1: See Seeking to a Specific Offset . In