Connect to Gmail with PHP & IMAP

Connect to Gmail with PHP & IMAP

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I have enabled OpenSSL and IMAP functions from my php.ini file and phpinfo() confirms it.

By using the code below i can connect to a Hotmail account but not to a Gmail account.(of course i change the $connect_to to point to Hotmail.)

$connect_to = '{imap.gmail.com:993/imap/ssl}INBOX';
$connection = imap_open($connect_to, $user, $password)
  or die("Can't connect to '$connect_to': " . imap_last_error());
imap_close($connection);

The returned error is

Warning: imap_open(): Couldn't open stream {imap.gmail.com:993/imap/ssl}INBOX in /opt/lampp/htdocs/webmail_client_practise/index.php on line 6
Can't connect to '{imap.gmail.com:993/imap/ssl}INBOX': 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

Unfortunately i cannot find a complete tutorial of how to use the IMAP functions.

Any ideas, solutions or suggestions will be helpful.


UPDATE:

After searching for my problem on the Internet, i did not found a solution that solves my problem completely. Although if

1) I use the insecure $connect_to = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX';

2)And allow gmail to be accessed by less secured apps,

solves my problem for now.

Please check this https://support.google.com/accounts/answer/6010255?hl=en

Retrieve Your Gmail Emails Using PHP and IMAP, '</div>'; } echo $output; } /* close the connection */ imap_close($inbox);. With our individual username/password settings set, we connect to Gmail  Firstly, we’ll take a look at the PHP mailer library we’re going to use. You can take this library as an alternative of mail() function in PHP. After that, we’ll discuss the process. In case you want to send emails via Gmail, you can choose a simpler way that doesn’t require any technical coding – Connect with external SMTP Service Providers


If you get blocked, this can be because google sees a login from a new device.

Go to your google account and check https://myaccount.google.com/device-activity and let them know the 'Unknown device is ok to use'.

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First check your date and time settings on your server are correct.

Alternatively try:

$connect_to = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX',

This will stop it from trying to validate certificate.

I will probably get downvotes from people telling me this is bad practice as this leaves you open to Man in the Middle attacks. Which is true.

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