to make imap work on my linux local host and ipage and godaddy

to make imap work on my linux local host and ipage and godaddy

i get a lot of error when i try to make imap function work on my localhost . so if someone use imap php before please contact me.
on my localhost i get this errors
Warning: imap_open(): Couldn't open stream {imap.gmail.com:993/imap/ssl}INBOX in /opt/lampp/htdocs/test/index.php on line 8
Certificate failure for imap.gmail.com: unable to get local issuer certificate: /C=US/O=GeoTrust Inc./CN=GeoTrust Global CA
Notice: Unknown: Certificate failure for imap.gmail.com: unable to get local issuer certificate: /C=US/O=GeoTrust Inc./CN=GeoTrust Global CA (errflg=2) in Unknown on line 0

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Requirements

i get a lot of error when i try to make imap function work on my localhost . so if someone use imap php before please contact me.

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Skills Required

Imap Php