检查IMAP是否存在文件夹

Question

我有一个处理电子邮件并将它们移动到另一个文件夹的脚本。它现在正常工作，但我希望能够测试我执行imap_mail_move()之前是否要将邮件移动到的文件夹先存在。有没有一个快速的方法来做到这一点？

$hostname="{".$imap_details['imap_server']."}INBOX".$imap_details['imap_path']; 
$imap = imap_open($hostname, $imap_details['email'], $imap_details['imap_password']); 
$processed_folder="INBOX/Processed"; 
//*** I would like to check if the above folder exists here **** 
//And then do some processing here 
//And then move the email to the processed folder 
imap_mail_move($imap,$i,$processed_folder); 

Answer 1

$folder = 'INBOX/Processed'; 
$cstr = '{server.foo.com:993/ssl}'; 
$imap = imap_open($cstr, ...); 
$list = imap_list($imap, $cstr, "*"); 

if(array_search($cstr.$folder, $list) === false) { 
    die("no folder!"); 
} 

http://php.net/manual/en/function.imap-list.php

Answer 2

array_search（）返回元件的阵列的关键。

如果（array_search（$ CSTR。$文件夹，$名单）=== “-1”）{

die("no folder!"); 

}