说我有一个多维数组.例如：

Array (

[0] => Array (

[animal_id] => 5494

[animal_name] => "Suzy"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

[1] => Array (

[animal_id] => 5494

[animal_name] => "Joshua"

[animal_type] => "panda"

[animal_location] => 5

[animal_awake] => 0

[animal_age] => 8 )

[2] => Array (

[animal_id] => 5494

[animal_name] => "Debra"

[animal_type] => "snake"

[animal_location] => 7

[animal_awake] => 1

[animal_age] => 3 )

[3] => Array (

[animal_id] => 5495

[animal_name] => "Caleb"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

[4] => Array (

[animal_id] => 5495

[animal_name] => "Joshua"

[animal_type] => "panda"

[animal_location] => 5

[animal_awake] => 0

[animal_age] => 8 )

[5] => Array (

[animal_id] => 5495

[animal_name] => "Debra"

[animal_type] => "snake"

[animal_location] => 7

[animal_awake] => 1

[animal_age] => 3 )

[6] => Array (

[animal_id] => 5496

[animal_name] => "Emily"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

[7] => Array (

[animal_id] => 5496

[animal_name] => "Joshua"

[animal_type] => "panda"

[animal_location] => 5

[animal_awake] => 0

[animal_age] => 8 )

[8] => Array (

[animal_id] => 5496

[animal_name] => "Debra"

[animal_type] => "snake"

[animal_location] => 7

[animal_awake] => 1

[animal_age] => 3 )

)

我想比较所有的蛇与蛇,以及所有的熊猫对抗熊猫的等(但不是对熊猫的蛇)并将独特的元素放入一个数组(所有独特的元素组成一个阵列),我将如何这样做.因为它们是数组中的元素,所以我有点难过.此外,我不会事先知道会有多少种不同的类型.例如,有一次我可以通过Panda,Bear,Snake的多维数组传递 – 下一次我可以通过Bird,Cat,Panda,Zebra传递数组.

有任何想法吗？

最终输出

Array (

[0] => Array (

[animal_id] => 5494

[animal_name] => "Suzy"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

[1] => Array (

[animal_id] => 5494

[animal_name] => "Joshua"

[animal_type] => "panda"

[animal_location] => 5

[animal_awake] => 0

[animal_age] => 8 )

[2] => Array (

[animal_id] => 5495

[animal_name] => "Caleb"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

[3] => Array (

[animal_id] => 5495

[animal_name] => "Debra"

[animal_type] => "snake"

[animal_location] => 7

[animal_awake] => 1

[animal_age] => 3 )

[4] => Array (

[animal_id] => 5496

[animal_name] => "Emily"

[animal_type] => "zebra"

[animal_location] => 0

[animal_awake] => 1

[animal_age] => 3 )

)