PHP gives astronomical recent email number when checks it using imap_check() function.

in mailbox I had 20 emails and 0 recent mails but function gives these values:

total email: 0
recent mails: 1035749365

I test my script about 10 times but i get theses values only 2 times. Usually function gives correct values.

I'm using webhotel system so i don't have much php settings info to give.