PHP array grouping and sorting program code-PHP source code

In php, you can use sort for data sorting. However, if you want to sort data by array group, you can use the array_multisort function or multiple repeated traversal functions. The following is an example. In php, you can use sort for data sorting. However, if you want to sort data by array group, you can use the array_multisort function or multiple repeated traversal functions. The following is an example.

Script ec (2); script

PHP array. The content in the array is roughly as follows:

The Code is as follows:
$ List = array ( Array (2, 3, 5 ), Array (2, 5, 24 ), Array (3, 8, 6 ), Array (3, 2, 10 ), Array (4,7, 20 ), Array (4,1, 15 ), Array (6, 4, 10 ), Array (7,9, 20 ), );

For ease of expression, I name three columns of numbers and three columns of ABC respectively.

Requirement: columns A are sorted by default. If Column A is the same, columns C are arranged in reverse order with the same elements. Column B is actually not involved in sorting, but it is useful in practical use, so I also wrote it out.

Method 1:

The Code is as follows:
$ A = $ c = array (); Foreach ($ list as $ val ){ $ A [] = $ val [0]; // column $ C [] = $ val [2]; // column c } // Install column a in ascending order, and then install Column B in descending order, similar to SQL, orderby a asc, B desc Array_multisort ($ a, SORT_ASC, $ c, SORT_DESC, $ list ); Print_r ($ list );

Method 2:

The Code is as follows:
For ($ j = 0; $ j For ($ I = count ($ list)-1; $ I> $ j; $ I --){ If ($ list [$ I] [0] = $ list [$ I-1] [0] & $ list [$ I] [2]> $ list [$ I-1] [2]) List ($ list [$ I], $ list [$ I-1]) = array ($ list [$ I-1], $ list [$ I]); } }

Example 2

For example, if the following data is found in the database, it is a two-dimensional array.
[0] => Array ([trans_lang_id] => 1 [country_id] => 1 [trans_origin_id] => 1 [page_id] => 1 [trans_content] => test1
[1] => Array ([trans_lang_id] => 2 [country_id] => 1 [trans_origin_id] => 2 [page_id] => 1 [trans_content] => test2
[2] => Array ([trans_lang_id] => 3 [country_id] => 1 [trans_origin_id] => 3 [page_id] => 1 [trans_content] => test3
[3] => Array ([trans_lang_id] => 4 [country_id] => 1 [trans_origin_id] => 4 [page_id] => 1 [trans_content] => test4
[4] => Array ([trans_lang_id] => 6 [country_id] => 2 [trans_origin_id] => 1 [page_id] => 2 [trans_content] => test5

How to group data by country_id and page_id into multiple arrays?
That is, the data with the same country_id and page_id becomes a new array. Because such data will be output to the same csv file.
For example, the file name is zh_CN_1.csv.

The Code is as follows:

Array Translates: US_en: Array ( [1] => Array ( [0] => Array ([0] => test [1] => test) [1] => Array ([0] => test [1] => test) [2] => Array ([0] => test [1] => test) [3] => Array ([0] => test [1] => test) ) ) CN_zh: Array ( [2] => Array ( [0] => Array ([0] => There are no user contributed notes for this page. [1] => this belong to another country) ) ) Foreach ($ translates as $ translate ){ $ Data [$ translate ["language_code"]. "_". $ translate ['short _ name'] [$ translate ['page _ id'] [] = array ($ translate ['content'], $ translate ['Trans _ content']); } Foreach ($ data as $ locale_key => $ item ){ Foreach ($ item as $ page_key => $ csvContent ){ $ FileName = $ locale_key. "_". $ page_key. ". csv "; $ TranslationFile-> generateCSV ($ fileName, $ csvContent ); } In this case, the output CSV is like the following structure: Zh_CN_1.csv Zh_CN_2.csv En_US_1.csv En_US_2.csv

Each csv may contain multiple pieces of data, that is, the data with the same country language and page_id is stored in the same csv.