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# imap_sort

(PHP 3 >= 3.0.3, PHP 4, PHP 5)

imap_sort -- Sort an array of message headers

## Description

array imap_sort ( resource stream, int criteria, int reverse [, int options [, string search_criteria [, string charset]]] )

Returns an array of message numbers sorted by the given parameters.

Reverse is 1 for reverse-sorting.

Criteria can be one (and only one) of the following:

- `SORTDATE` - message Date

- `SORTARRIVAL` - arrival date

- `SORTFROM` - mailbox in first From address

- `SORTSUBJECT` - message subject

- `SORTTO` - mailbox in first To address

- `SORTCC` - mailbox in first cc address

- `SORTSIZE` - size of message in octets

The flags are a bitmask of one or more of the following:

- `SE_UID` - Return UIDs instead of sequence numbers

- `SE_NOPREFETCH` - Don't prefetch searched messages

Parameter charset was added in PHP 4.3.3.

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