Check if the IMAP stream is still valid

# imap_is_open

(PHP 8 >= 8.2.1)

imap_is_open — Check if the IMAP stream is still valid

### Description

imap_is_open(IMAP\Connection `$imap`): bool

Check if the IMAP stream is still valid.

### Parameters

`imap`

  An IMAP\Connection instance.

### Return Values

Returns `true` if the stream is still valid, `false` otherwise.

### Examples

Example #1 imap_is_open() example

`<?php
$mbox = imap_open("{imap.example.org:143}INBOX", "username", "password") or die(implode(", ", imap_errors()));
imap_is_open($mbox);
// ...
?>`
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