如何按字母顺序对PHP中的数组进行排序？ [重复]

Question

Possible Duplicates:
How to sort a multi dimensional array in PHP alphabetically?
PHP : Sort array alphabetically

I am developing an API using Codeigniter and Phils RESTserver. In this API I access a database that contains users.

I would like to sort these users before outputting them. How can I do this? I tried the below code but that does not work.

function sort_by_lastname($a, $b)
{
    return strcmp($a['user']['basic']['lastname'], $a['user']['basic']['lastname']);
}

This is my data in JSON format.

http://pastie.org/2402372

How can I alter the above to sort this output (when in PHP array format, not JSON).

Thankful for all help!

Answer 1

Check PHP.net before asking here. A quick search would have turned up PHP's asort() function: http://php.net/asort