使用條件設置爲True

Question

一個變量我有檢查，如果用戶有一個劇目中的權利的特權，如果用戶確實，我想它設定新的變量的函數：getprivileges = true

<?php 
    $directory = $_SESSION['cwd'];     // current directory 
    $user = $_SESSION['simple_auth']['username']; // get username 
    $repository = gatorconf::get('repository');  // get base repertory of the file manager 
    $userdir = $repository.DS.'user'.DS.$user;  // user's repertory 

function scanDirectory($userdir = '', $directory){ 
    $folders = glob($userdir . '/*' , GLOB_ONLYDIR); 
    foreach($folders as $folder){ 
     if (($folder == $directory && gator::checkPermissions('r')) || (gator::checkPermissions('ru')) || ($userdir == $directory && gator::checkPermissions('r'))) { 
      $getprivileges = true; 
      break; 
     } 
     scanDirectory($folder, $directory); 
    } 
} 

scanDirectory($userdir, $directory); 
?> 

<?php if ($getprivileges == true): ?> 
<p>Permissions granted.<p> 
<?php endif; ?> 

我相信功能return是我正在尋找，但我真的不知道如何使用它。 代碼的最後部分僅僅是我打算對變量做的一個例子。

我添加了，到目前爲止我的變量$ getprivileges沒有在我的代碼中的其他地方定義，所以也許我必須先給它一個默認值？

有人可以給我一些解釋我如何做到這一點？

非常感謝

解決方案更新從註釋：

<?php 
    $directory = $_SESSION['cwd'];     // current directory 
    $user = $_SESSION['simple_auth']['username']; // get username 
    $repository = gatorconf::get('repository');  // get base repertory of the file manager 
    $userdir = $repository.DS.'user'.DS.$user;  // user's repertory 
    $getprivileges = scanDirectory($userdir, $directory); 

function scanDirectory($userdir = '', $directory){ 
    $folders = glob($userdir . '/*' , GLOB_ONLYDIR); 
    foreach($folders as $folder){ 
     if (($folder == $directory && gator::checkPermissions('r')) || (gator::checkPermissions('ru')) || ($userdir == $directory && gator::checkPermissions('r'))) { 
      return true; 
      break; 
     } 
     scanDirectory($folder, $directory); 
    } 
} 

scanDirectory($userdir, $directory); 
?> 

<?php if ($getprivileges == true): ?> 
<p>Permissions granted.<p> 
<?php endif; ?> 

Answer 1

我這個做了一個社區維基因爲作者已經想出瞭解決方案。

---

你是對的，你需要使用return。通過使用return，您可以返回某個值作爲函數調用的值，並將該值分配給一個變量。在你的情況下，你想返回true或false。

然後你可以設置$getprivileges像這樣：

$getprivileges = scanDirectory($userdir, $directory); 

你的函數應該是這個樣子：

function scanDirectory($userdir = '', $directory){ 
    $folders = glob($userdir . '/*' , GLOB_ONLYDIR); 
    foreach($folders as $folder){ 
     if (($folder == $directory && gator::checkPermissions('r')) || (gator::checkPermissions('ru')) || ($userdir == $directory && gator::checkPermissions('r'))) { 
      // Replaced here. 
      return true; 
     } 
     scanDirectory($folder, $directory); 
    } 

    // Added here. 
    return false; 
}