# imap_search

(PHP 4, PHP 5, PHP 7)

imap_search — This function returns an array of messages matching the given search criteria

### 说明

imap_search ( resource `$imap_stream` , string `$criteria` [, int `$options` = SE_FREE [, string `$charset` = `NULL` ]] ) : array

This function performs a search on the mailbox currently opened in the given IMAP stream.

For example, to match all unanswered messages sent by Mom, you'd use: "UNANSWERED FROM mom". Searches appear to be case insensitive. This list of criteria is from a reading of the UW c-client source code and may be incomplete or inaccurate (see also » RFC2060, section 6.4.4).

### 参数

`imap_stream`

  由 imap_open() 返回的 IMAP 流。

`criteria`

  A string, delimited by spaces, in which the following keywords are allowed. Any multi-word arguments (e.g. FROM "joey smith") must be quoted. Results will match all `criteria` entries.

  - ALL - return all messages matching the rest of the criteria
  - ANSWERED - match messages with the \\ANSWERED flag set
  - BCC "string" - match messages with "string" in the Bcc: field
  - BEFORE "date" - match messages with Date: before "date"
  - BODY "string" - match messages with "string" in the body of the message
  - CC "string" - match messages with "string" in the Cc: field
  - DELETED - match deleted messages
  - FLAGGED - match messages with the \\FLAGGED (sometimes referred to as Important or Urgent) flag set
  - FROM "string" - match messages with "string" in the From: field
  - KEYWORD "string" - match messages with "string" as a keyword
  - NEW - match new messages
  - OLD - match old messages
  - ON "date" - match messages with Date: matching "date"
  - RECENT - match messages with the \\RECENT flag set
  - SEEN - match messages that have been read (the \\SEEN flag is set)
  - SINCE "date" - match messages with Date: after "date"
  - SUBJECT "string" - match messages with "string" in the Subject:
  - TEXT "string" - match messages with text "string"
  - TO "string" - match messages with "string" in the To:
  - UNANSWERED - match messages that have not been answered
  - UNDELETED - match messages that are not deleted
  - UNFLAGGED - match messages that are not flagged
  - UNKEYWORD "string" - match messages that do not have the keyword "string"
  - UNSEEN - match messages which have not been read yet
`options`

  Valid values for `options` are `SE_UID`, which causes the returned array to contain UIDs instead of messages sequence numbers.

`charset`

  MIME character set to use when searching strings.

### 返回值

Returns an array of message numbers or UIDs.

Return `FALSE` if it does not understand the search `criteria` or no messages have been found.

### 范例

Example #1 imap_search() example

    <?php
    $conn   = imap_open('{imap.example.com:993/imap/ssl}INBOX', 'foo@example.com', 'pass123', OP_READONLY);

    $some   = imap_search($conn, 'SUBJECT "HOWTO be Awesome" SINCE "8 August 2008"', SE_UID);
    $msgnos = imap_search($conn, 'ALL');
    $uids   = imap_search($conn, 'ALL', SE_UID);

    print_r($some);
    print_r($msgnos);
    print_r($uids);
    ?>

以上例程的输出类似于：

    Array
    (
        [0] => 4
        [1] => 6
        [2] => 11
    )
    Array
    (
        [0] => 1
        [1] => 2
        [2] => 3
        [3] => 4
        [4] => 5
        [5] => 6
    )
    Array
    (
        [0] => 1
        [1] => 4
        [2] => 6
        [3] => 8
        [4] => 11
        [5] => 12
    )

### 参见

- imap_listscan() - Returns the list of mailboxes that matches the given text