Question

我的代码需要一些帮助。我在解析html标签中的元素时遇到问题，我的html页面中有两个不同的html标签，其中有<a id="link1"和<a id="streams"。

当我尝试这个时：

$streams_url = $domdoc->getElementsByTagName('a');

foreach($streams_url as $a)
{
   $url[0] = $a->getAttribute("href");
   print_r($url);
}

我将从html标记<a id="link1"和<a id="streams"中获取完整元素。

这是输出：

Array ( [0] => http://myserverip/get-listing.php?channels=BBC One S East&id=101 ) 
Array ( [0] => rtmp://www.testserver.com/bbc1 ) 
Array ( [0] => http://myserverip/get-listing.php?channels=BBC Two&id=102) 
Array ( [0] => rtmp://www.testserver.com/bbc2 ) 
Array ( [0] => http://myserverip/get-listing.php?channels=ITV&id=103 )
Array ( [0] => rtmp://www.testserver.com/itv1 ) 
Array ( [0] => http://myserverip/get-listing.php?channels=Channel 4&id=104 ) 
Array ( [0] => rtmp://www.testserver.com/channel4 ) 
Array ( [0] => http://myserverip/get-listing.php?channels=Channel 5&id=105 ) 
Array ( [0] => rtmp://www.testserver.com/channel5 ) 
Array ( [0] => http://myserverip/get-listing.php?channels=Sky One&id=106 ) 
Array ( [0] => rtmp://www.testserver.com/skyone ) 
Array ( [0] => http://myserverip/get-listing.php?channels=Sky Living&id=107 ) 
Array ( [0] => rtmp://www.testserver.com/skyliving ) 
Array ( [0] => http://myserverip/get-listing.php?channels=Sky Atlantic&id=108 ) 
Array ( [0] => rtmp://www.testserver.com/skyatlantic )

以下是完整代码：

<?php
ini_set('max_execution_time', 300);
//error_reporting(0);
$errmsg_arr = array();
$errflag = false;

function getState($string)
{
  $ex = explode(" ",$string);
  return $ex[1];
}
$baseUrl = file_get_contents('http://myserverip/get-listing.php');

$domdoc = new DOMDocument();
$domdoc->strictErrorChecking = false;
$domdoc->recover=true;
$domdoc->loadHTML($baseUrl);

$streams_url = $domdoc->getElementsByTagName('a');

foreach($streams_url as $a)
{
   $url[0] = $a->getAttribute("href");
   print_r($url);
}
?>

我想要实现的是我想从流标签中获取元素，使其显示如下：

Array ( [0] => rtmp://www.testserver.com/bbc1 ) 
Array ( [0] => rtmp://www.testserver.com/bbc2 ) 
Array ( [0] => rtmp://www.testserver.com/itv1 ) 
Array ( [0] => rtmp://www.testserver.com/channel4 ) 
Array ( [0] => rtmp://www.testserver.com/channel5 ) 
Array ( [0] => rtmp://www.testserver.com/skyone ) 
Array ( [0] => rtmp://www.testserver.com/skyliving ) 
Array ( [0] => rtmp://www.testserver.com/skyatlantic )

你能否告诉我一个例子，我可以用什么方法来解析名为<a id="streams的标签中的元素，同时忽略其他标签中的元素？

Answer 1

如果您确定href的流始终以rtmp://开头，则可以使用此功能（如果您正在寻找快速简便的解决方案）：

foreach($streams_url as $a)
{
   $url[0] = $a->getAttribute("href");
   if($url[0][0]=='r') print_r($url);
}

从数组中的其中一个标记中解析元素

1 个答案: