4
Comment puis-je trier le tableau ci-dessous par l'une des valeurs enfant (i.e: ID_poste, nom d'utilisateur, etc ...)?Trier le tableau parent par la valeur enfant
Array(
[0] => Array
(
[id] => 10
[post_id] => 398
[user_id] => 0
[view_date] => 2010-11-20 15:26:00
[views] => 4
[username] => <em>guest</em>
)
[1] => Array
(
[id] => 9
[post_id] => 397
[user_id] => 1
[view_date] => 2010-11-19 23:35:39
[views] => 1
[username] => Fire G
)
[2] => Array
(
[id] => 8
[post_id] => 398
[user_id] => 1
[view_date] => 2010-11-19 23:35:26
[views] => 4
[username] => Fire G
)
[3] => Array
(
[id] => 7
[post_id] => 396
[user_id] => 1
[view_date] => 2010-11-19 23:07:57
[views] => 3
[username] => Fire G
)
[4] => Array
(
[id] => 6
[post_id] => 396
[user_id] => 1
[view_date] => 2010-11-19 23:07:55
[views] => 3
[username] => Fire G
)
[5] => Array
(
[id] => 5
[post_id] => 396
[user_id] => 1
[view_date] => 2010-11-19 23:07:52
[views] => 3
[username] => Fire G
)
[6] => Array
(
[id] => 4
[post_id] => 13
[user_id] => 1
[view_date] => 2010-11-19 22:59:35
[views] => 1
[username] => Fire G
)
[7] => Array
(
[id] => 3
[post_id] => 3
[user_id] => 1
[view_date] => 2010-11-19 22:59:28
[views] => 1
[username] => Fire G
)
[8] => Array
(
[id] => 2
[post_id] => 398
[user_id] => 1
[view_date] => 2010-11-18 11:37:20
[views] => 4
[username] => Fire G
)
[9] => Array
(
[id] => 1
[post_id] => 398
[user_id] => 1
[view_date] => 2010-11-18 11:37:16
[views] => 4
[username] => Fire G
)
)
+1 great! Qu'en est-il de '$ a ['post_id'] - $ b ['post_id']'? – alex
Je ne sais pas ce que ça veut dire. La différence algébrique entre les ID de poste? –
@Dan Grossman Désolé je veux dire si vous retournez un moins l'autre, il donnera un négatif ou positif si elles sont différentes, ou 0 si elles sont identiques. Répondre efficacement aux exigences de rappel de tri. – alex