PHP数组分组排序程序代码
php中数据排序可以用sort但如果要做到数组分组排序的话我们可以使用ar(HdhCmsTestphpfensi测试数据)ray_multisort函数或者使用多重复遍历来做,下面看一个例子.
PHP的数组,数组中的内容大致如下:
$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), );为了方便表达,我把3列数字分别称为,ABC三列.
需求:默认以A列排序为主,如果A列相同则以C列倒序排列相同的元素,B列其实没有参与排序,但是在实际运用中有用,所以我也写出来了.
方法一, 代码如下:
$a = $c = array (); foreach ( $list as $val ){ $a [] = $val [0]; //a列 $c [] = $val [2]; //c列 } //安装a列升序,然后安装b列降序 , 类似sql，orderby a asc,b desc array_multisort ( $a ,SORT_ASC , $c , SORT_DESC, $list ); print_r( $list );方法二,代码如下:
for ( $j =0; $j < count ( $list ); $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 ]); } }例子2,例如有下面的数据,从数据库里查出来的,是一个二维数组.
[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 (HdhCmsTestphpfensi测试数据)[trans_origin_id] => 1 [page_id] => 2 [trans_content] => test5怎样按照country_id 和page_id分组,将里面的数据查分成多个数组？
也就是country_id和page_id相同的数据成为一个新数组,因为这样的数据会输出到同一个csv文件,比如文件名为 zh_CN_1.csv,代码如下:
Array Translates: US_en:Array ( [1] => Array ( [0] => Array ( [0] => test [1] => 测试) [1] => Array ( [0] => test [1] => 测试) [2] => Array ( [0] => test [1] => 测试) [3] => Array ( [0] => test [1] => 测试 ) ) ) 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 ); }这样的话输出的CSV就像下面的结构:
zh_CN_1.csv zh_CN_2.csv en_US_1.csv en_US_2.csv每个csv里面可能有多条数据,就是那些国家语言以及page_id都相同的数据就放在同一个csv里.
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