0
我正在CakePHP框架內工作,並且有以下多維數組,我需要按值進行排序。我正在使用usort
,但無法弄清如何由[ForumPost]
的孩子進行排序。用兒童的usort對多維數組排序
這裏的數組:
Array
(
[0] => Array
(
[ForumPost] => Array
(
[id] => 174
[forum_id] => 81
[user_id] => 39
[title] => A test post
[1] => Array
(
[ForumPost] => Array
(
[id] => 64
[forum_id] => 208
[user_id] => 36
[title] => B test post
... etc
我的功能和呼叫是:
usort($array, array("ForumSearchesController", "cmp"));
function cmp($a, $b) {
return $a['ForumPost']['title'] - $b['ForumPost']['title'];
}
取代'美元[ 'ForumPost'] [ '標題'] - $ B [ 'ForumPost'] [ '標題']',它看起來像您剛纔需要'返回strcmp($ a ['ForumPost'] ['title'],$ b ['ForumPost'] ['title']);' – 2013-03-11 13:53:55
鑑於標題是一個字符串,爲什麼你使用minus來比較? – 2013-03-11 13:54:17
看看PHP的usort頁面上的例子3 http://php.net/manual/en/function.usort.php – Pitchinnate 2013-03-11 13:55:41