函数应该返回数组，但返回NULL而不是

Question

我有这个函数应该返回一个数组，但它返回NULL。我认为它可能与它生成的数组大小有关，因为它有时可以正常工作。我试图在返回之前做一个var_dump，它总是显示我需要的数组，但函数输出的var_dump只显示NULL。

function getAllUploads($videoFeed, $videos = array(), $counter = 1){ 
    foreach($videoFeed as $videoEntry){ 
     if($videoEntry->extensionElements[6]->extensionAttributes['permission']['value'] == "allowed"){ 
      $videos[] = array("videoID" => $videoEntry->getVideoId(), "uploaded" => ytToMySQLDateTime($videoEntry->getPublished()->getText())); //date('Y-m-d H:i:s', $videoEntry->getPublished()->getText()) 
     } 
     $counter++; 
    } 

    try{ 
     $videoFeed = $videoFeed->getNextFeed(); 
    }catch(Zend_Gdata_App_Exception $e){ 
     return $videos; 
    } 

    if($videoFeed){ 
     getAllUploads($videoFeed, $videos, $counter); 
    } 
} 

Answer 1

你应该返回最后if()声明

function getAllUploads($videoFeed, $videos = array(), $counter = 1){ 
    foreach($videoFeed as $videoEntry){ 
     if($videoEntry->extensionElements[6]->extensionAttributes['permission']['value'] == "allowed"){ 
      $videos[] = array("videoID" => $videoEntry->getVideoId(), "uploaded" => ytToMySQLDateTime($videoEntry->getPublished()->getText())); //date('Y-m-d H:i:s', $videoEntry->getPublished()->getText()) 
     } 
     $counter++; 
    } 

    try{ 
     $videoFeed = $videoFeed->getNextFeed(); 
    }catch(Zend_Gdata_App_Exception $e){ 
     return $videos; 
    } 

    if($videoFeed){ 
     return getAllUploads($videoFeed, $videos, $counter); 
    } 
}