PHP SimplePie错误：$ item-> get_enclosure（）始终返回true

问题描述：

Am trying to build a news reader using php SimplePie Library. When i try to get image from feed using code

if ($enclosure = $item->get_enclosure()){
    $imageLink = $enclosure->get_link(); 
    echo "<img src=\"$imageLink\">";
}

When i fetch feed from an rss feed which dont have an enclosure, it echo image tag with source as follows.

src="//?#"

The above code is working fine with feeds which have enclosures.

I also tried with code:

if ($enclosure = $item->get_enclosure()){
    if($imageLink = $enclosure->get_link()){
        echo "<img src=\"$imageLink\">";
    }
}

can someone tell me what i am doin wrong in these codes?

我正在尝试使用php SimplePie Library构建新闻阅读器。当我尝试使用代码 p>

  if（$ enclosure = $ item-＆gt; get_enclosure（））{
 $ imageLink = $ enclosure-＆gt; get_link  （）;  
 echo“＆lt; img src = \”$ imageLink \“＆gt;”; 
} 
  code>  pre> 
 
 当我从没有的RSS提要中获取Feed时 一个外壳，它回显带有源的图像标签如下。 p> 
 
 
  src =“//？＃”
  code>  pre> 
 
 以上代码适用于带有附件的源。 p> 
 
 
我也试过代码： p> 
 
 
  if（$ enclosure = $  item-＆gt; get_enclosure（））{
 if（$ imageLink = $ enclosure-＆gt; get_link（））{
 echo“＆lt; img src = \”$ imageLink \“＆gt;”; 
} 
  } 
  code>  pre> 
 
 有人能告诉我这些代码中我做错了什么吗？ p> 
  div>

答

Check if $imageLink is assigned a value anywhere in your code. Most probably that could be the error. Use print_r or var_dump at each step of your code to fine where exactly is you code assigning that value to before mentioned variable

答

Seems like $imageLink value is //?#, so if you do

if($imageLink = $enclosure->get_link())

The result is true...

check the exact value if there is no enclosure, and then change the condition... I.E

$imageLink = $enclosure->get_link();
if($imageLink !== "//?#") {

You can check the exact value using

if ($enclosure = $item->get_enclosure()){
    $imageLink = $enclosure->get_link(); 
    var_dump($imageLink);
}

PHP SimplePie错误：$ item-> get_enclosure（）始终返回true

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