PHP - imap_unsubscribe() 函式

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PHP−IMAP 函式可幫助您訪問電子郵件帳戶，IMAP 代表 **I**nternet **M**ail **A**ccess **P**rotocol，使用這些函式，您還可以使用 NNTP、POP3 協議和本地郵箱訪問方法。

**imap_unsubscribe()** 函式接受表示 IMAP 流的資源值和表示郵箱中訊息的整數值作為引數，並取消訂閱給定的郵箱。

語法

imap_unsubscribe($imap_stream, $mailbox);

引數

序號 引數及描述
1

imap_stream (必填)

這是一個字串值，表示 IMAP 流，是 **imap_open()** 函式的返回值。
2

mailbox(必填)

這是一個字串值，表示郵箱的名稱/URL。它包含伺服器名稱和郵箱路徑。

返回值

此函式返回一個布林值，成功時為 TRUE，失敗時為 FALSE。

PHP 版本

此函式首次引入於 PHP 4 版本，並在所有後續版本中均有效。

示例

以下示例演示了 **imap_unsubscribe()** 函式的使用 −

<html>
   <body>
      <?php
         //Establishing connection
         $url = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX";
         $id = "tutorialspoint.test@gmail.com";
         $pwd = "cohondob_123";
         $imap = imap_open($url, $id, $pwd);
         print("Connection established...."."<br>");
		    
         //Subscribing to the mailbox
         $res = imap_subscribe($imap, $url);
         print("subscribed to a mailbox"."<br>");	
		 
         print("List of subscribed mailboxes"."<br>");	
         print_r(imap_lsub($imap, $url, "*" ));
         print("<br>");
		  		 
         //Unsubscribing to the mailbox
         print("Unsubscribed to the mailboxes: "."<br>");
         imap_unsubscribe($imap, $url);		 
		 
         //Retrieving the list of subscribed mailboxes
         print("List of subscribed mailboxes: "."<br>");
         $list = imap_lsub($imap, $url, "*" );	
         print_r($list);		 

         //Closing the connection
         imap_close($imap);   
      ?>
   </body>
</html>

輸出

這將生成以下輸出 −

Connection established....
subscribed to a mailbox
List of subscribed mailboxes
Array ( [0] => {imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX )
Unsubscribed to the mailboxes:
List of subscribed mailboxes:

示例

這是上述函式的另一個示例 −

<html>
   <body>
      <?php
         //Establishing connection
         $url = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX";
         $id = "tutorialspoint.test@gmail.com";
         $pwd = "cohondob_123";
         $imap = imap_open($url, $id, $pwd);
         print("Connection established...."."<br>");
		 
         //Creating a mailbox
         $newmailbox1 = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_1";
         $newmailbox2 = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_2";
         $newmailbox3 = "{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_3";
         imap_createmailbox($imap, imap_utf7_encode($newmailbox1));
         imap_createmailbox($imap, imap_utf7_encode($newmailbox2));
         imap_createmailbox($imap, imap_utf7_encode($newmailbox3));
         print("Mailboxes Created . . . . "."<br>");
		 		 
         //Subscribing to the mailbox
         $res = imap_subscribe($imap, $newmailbox1);
         $res = imap_subscribe($imap, $newmailbox2);
         $res = imap_subscribe($imap, $newmailbox3);
         print("Subscribed to the created mailboxes . . . . "."<br>");


         //List of subscribed mailboxes
         print("List of subscribed mailboxes: "."<br>");
         $list = imap_listsubscribed($imap, $url, "*" );		 
         foreach($list as $ele){
            print($ele."<br>");
         }
		 		 
         //Unsubscribing to mailboxes
         imap_unsubscribe($imap, $newmailbox3);		 

         //List of subscribed mailboxes
         print("List of subscribed mailboxes after unsubscribing : "."<br>");
         $list = imap_listsubscribed($imap, $url, "*" );		 
         foreach($list as $ele){
            print($ele."<br>");
         }	 

         //Closing the connection
         imap_close($imap);   
      ?>
   </body>
</html>

輸出

這將生成以下輸出 −

Connection established....
Mailboxes Created . . . .
Subscribed to the created mailboxes . . . .
List of subscribed mailboxes:
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_1
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_2
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_3
List of subscribed mailboxes after unsubscribing :
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_1
{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX.mbox_2
php_function_reference.htm
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