PHP - imap_alerts() Function

Quiz

PHP−IMAP functions helps you to access email accounts, IMAP stands for Internet Mail Access Protocol using these functions you can also work with NNTP, POP3 protocols and local mailbox access methods.

The imap_alerts()function retrieves all the error messages occurred from starting of the current page or, since the last call of this function, and returns them in the form of an array.

imap_binary() function notranslate"> imap_alerts();

Parameters

This function does not accept any parameters.

Return Values

This function returns an array containing all the occurred errors, in case of success and it returns the Boolean value false in case of failure.

PHP Version

This function was first introduced in PHP Version 4 and works in all the later versions.

Example

Following example demonstrates the usage of the imap_alerts() function −

<html>
   <body>
      <?php
         $url = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX";
         $id = "[email protected]";
         $pwd = "wrong_password";
         $mailbox = imap_open($url, $id, $pwd);
         print("<br>");
         if ( $mailbox === false ) {
            exit ("Alerts: <br>" . $alerts = imap_alerts() ."\n");
         } else {
            print("Connection established....");
         }
      ?>
   </body>
</html>

Output

This generates the following output −

Connection established....
List of mailboxes:
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX
Alerts:

Notice: Unknown: [ALREADYEXISTS] Duplicate folder name INBOX.test_mail1 (Failure) (errflg=2) in Unknown on line 0

Notice: Unknown: [ALREADYEXISTS] Duplicate folder name INBOX.test_mail2 (Failure) (errflg=2) in Unknown on line 0

Example

Following is another example of this function −

<html>
   <body>
      <?php
         $url = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX";
         $id = "[email protected]";
         $pwd = "cohondob_123";
         $mailbox = imap_open($url, $id, $pwd);
         print("Connection established....");
         print("<br>");

         //Creating mailboxes
         $newmailbox1 = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.test_mail1";
         $newmailbox2 = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.test_mail2";            
         $res = imap_createmailbox($mailbox, imap_utf7_encode($newmailbox1));
         $res = imap_createmailbox($mailbox, imap_utf7_encode($newmailbox2));

         //Retrieving the contents of mail boxes
         print("List of mailboxes: ");
         print("<br>");
         $list = imap_getmailboxes($mailbox, $url, "*");
		
         foreach ($list as $key => $val) {
            print_r($val->name);
            print("<br>");
            exit ("Alerts: <br>" . $alerts = imap_alerts() ."\n");      
         }
      ?>
   </body>
</html>

Output

This will generate the following output −

Warning: imap_open(): Couldn't open stream {imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX in C:\Apache24\htdocs\examples\demo2.html on line 7

Alerts:

Notice: Unknown: [AUTHENTICATIONFAILED] Invalid credentials (Failure) (errflg=1) in Unknown on line 0

Notice: Unknown: [AUTHENTICATIONFAILED] Invalid credentials (Failure) (errflg=1) in Unknown on line 0

Notice: Unknown: [AUTHENTICATIONFAILED] Invalid credentials (Failure) (errflg=1) in Unknown on line 0

Notice: Unknown: Too many login failures (errflg=2) in Unknown on line 0

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