Issue #680: Fix ValueError for imap_ping(), when the connection is already closed

* Issue #680: Fix ValueError for `imap_ping()`, when the connection is already closed

Author: underdpt

src/PhpImap/Mailbox.php

@@ -476,7 +476,17 @@ public function getImapStream(bool $forceConnection = true)
 
     public function hasImapStream(): bool
     {
-        return (\is_resource($this->imapStream) || $this->imapStream instanceof \IMAP\Connection) && \imap_ping($this->imapStream);
+        try {
+            return (\is_resource($this->imapStream) || $this->imapStream instanceof \IMAP\Connection) && \imap_ping($this->imapStream);
+        } catch (\Error $exception) {
+            // From PHP 8.1.10 imap_ping() on a closed stream throws a ValueError. See #680.
+            $valueError = '\ValueError';
+            if (class_exists($valueError) && $exception instanceof $valueError) {
+                return false;
+            }
+
+            throw $exception;
+        }
     }
 
     /**