4

我正在使用 simplexml_load_file() 函数解析 xml 文件。当我遇到两个具有相同名称的节点时,我遇到了问题。我的 XML 文件结构是:

<company>
    <name>Test Co</name>
    <link href="link1" rel="self"/>
    <link href="link2" rel="www"/>
</company>

这是代码:

$parametrs = simplexml_load_file("my.xml");
foreach ($parametrs->company as $param ) {
    echo $param->name;    
}

我怎样才能从每家公司回显link2?

4

4 回答 4

3
<?php
$xml = '<?xml version="1.0" ?>
<company>
<name>Test Co</name>
<link href="link1" rel="self"/>
<link href="link2" rel="www"/>
</company>';


$parameters = new SimpleXmlElement($xml);

echo (string)$parameters->link[1]['href'];  // note you must cast here!

这将输出“link2”(周围没有引号)。

此外,您可能需要预先检查这些元素是否存在,但我将把它留给您,因为它超出了问题的范围;)

于 2012-10-16T16:23:44.960 回答
0

您可以使用 xPath:

 <?php
$sxml = simplexml_load_string('<company>
<name>Test Co</name>
<link href="link1" rel="self"/>
<link href="link2" rel="www"/>
</company>');


$link = $sxml->xPath('//link[@rel="www"]');

var_dump($link);

http://codepad.viper-7.com/C4VU9q

问候

于 2012-10-16T16:23:20.730 回答
0

<company>当您将 XML 文件加载到 SimpleXML 中时,在您的情况下,返回的对象代表 XML 根节点。

所以,你只需要获取第二个链接标签,并获取它的href.

$parametrs = simplexml_load_file("my.xml");
// you need to case here, as this is actually a SimpleXML element, not a string
echo (string)$parametrs->link[1]['href'];
于 2012-10-16T16:29:01.947 回答
-1

你可以试试我的课它使用简单的xml

这是代码

<?php
  class xml_grabber
        {
            private $xml_file       = '' ;
            private $xml_link       = '' ;
            private $xml_dom        = '' ;
            private $xml_type       = '' ;
            private $xml_content    = '' ;
            private $xml_errors     = array() ;
            public  $xml_stack      = 0  ;
            public  $only_text      = 0 ;

            private $xml_connect_count  = 0 ;

            public function __construct($link_file_com = '')
                   {
                       if(!$link_file_com)
                            {
                              $this->xml_errors['construct'] = 'No Xml In Construct' ;
                              return false;
                            }
                       elseif(!function_exists('simplexml_load_file') || !function_exists('simplexml_load_string') || !function_exists('simplexml_import_dom'))
                            {
                              $this->xml_errors['functions'] = 'simple xml function not exists' ;
                              return false;
                            }
                       else
                            {
                             $this->set_xml(trim($link_file_com)) ;
                            }
                   }

             public function only_text( $val = 0 )
                  {
                    $this->only_text = $val ;
                  }

             public function set_xml($xml)
                   {
                      if(isset($xml{3}))
                        {
                           if(file_exists($xml))
                              {
                                $this->xml_type = 1 ;
                                $this->xml_file = $xml ;
                              }
                          elseif(filter_var($xml, FILTER_VALIDATE_URL))
                              {
                                $this->xml_type = 2 ;
                                $this->xml_link = $xml ;
                              }
                          else
                              {
                                $this->xml_type = 3 ;
                                $this->xml_dom  = $xml ;
                              }
                        }
                      else
                        {
                          $this->xml_type = '' ;
                        }
                   }

             public function get_xml()
                   {
                      if($this->xml_type == '')
                            {
                              return false ;
                            }
                      elseif($this->xml_type == 1)
                            {
                              return $this->xml_file ;
                            }
                      elseif($this->xml_type == 2)
                            {
                              return $this->xml_link ;
                            }
                      elseif($this->xml_type == 3)
                            {
                              return $this->xml_dom ;
                            }
                   }

             public function set_columns($new_columns= array())
                   {
                      return $this->xml_columns = $new_columns ;
                   }
             public function get_columns()
                   {
                     return $this->xml_columns ;
                   }

             public function load()
                   {
                     if($this->xml_type == '')
                            {
                              $this->xml_errors['loader'] = 'Unknown XML type' ;
                              return false;
                            }
                      elseif($this->xml_type == 1)
                            {
                              $xml = simplexml_load_file($this->xml_file,null, LIBXML_NOCDATA) ;
                              $this->xml_content = $xml ;
                            }
                      elseif($this->xml_type == 2)
                            {
                               $con = $this->connect($this->xml_link);
                               $this->xml_content = simplexml_load_string(trim($con),null, LIBXML_NOCDATA) ;
                            }
                      elseif($this->xml_type == 3)
                            {
                              return $this->xml_dom ;
                            }
                   }

             public function fetch($return = 'array')
                    {
                        $xml  = array() ;
                        if($this->xml_content)
                            {
                               print_r ( $this->get_attribute($this->xml_content)) ;
                            }
                    }

            public function get_attribute($object)
                    {
                       if( (is_array( $object ) || is_object( $object )) && count( $object ) > 0 )
                            {
                                  foreach( $object as $k => $val )
                                      {
                                          $count = count( $val ) ;

                                          $cou   = count( $object->$k ) ;

                                          if( $count > 0 and is_array( $val ) || is_object( $val ) )
                                              {
                                                if( $cou > 1 )
                                                     {
                                                       $result['item'][] = $this->get_attribute( $val ) ;
                                                     }
                                                else
                                                     {
                                                       $result[$k] = $this->get_attribute( $val ) ;
                                                     }
                                              }
                                          else
                                              {
                                                $attr = $val->attributes() ;

                                                if( count( $attr ) > 0 )
                                                      {
                                                        $var  ;
                                                        foreach( $attr as $kk => $vv )
                                                              {
                                                                $var[$kk] = (string) $vv ;
                                                              }
                                                        if( $cou > 1 )
                                                             {
                                                               $result[$k][] =  $var ;
                                                             }
                                                        else
                                                             {
                                                               $result[$k] =  $var ;
                                                             }
                                                      }
                                                else
                                                      {

                                                        $result[$k] =  (string) $val ;
                                                      }
                                              }
                                      }
                            }
                       else
                            {
                              $result[] =  $object ;
                            }

                       return $result ;
                    }

/*
             public function fetch($return = 'array')
                    {

                        if($this->xml_content)
                            {
                               $rss_feed = $this->xml_content ;
                               $rss_title = (string) $rss_feed->channel->title ;
                               $rss_link  = (string) $rss_feed->channel->link  ;
                               $rss_cat   = (string) $rss_feed->channel->category  ;
                               $rss_image = (string) $rss_feed->channel->image->url  ;

                               $rss_summary =
                                            array
                                            (
                                              'info' =>
                                                        array(
                                                                'title'=>$rss_title ,
                                                                'link'=>$rss_link ,
                                                                'cat'=>$rss_cat ,
                                                                'image'=>$rss_image
                                                                ) ,
                                              'item' =>  array()

                                            ) ;

                            if(is_array($rss_feed->channel) or is_object($rss_feed->channel))
                                {
                                      if(is_array($rss_feed->channel->item) or is_object($rss_feed->channel->item))
                                         {
                                             foreach($rss_feed->channel->item as $item)
                                                     {
                                                         if($item->enclosure && $item->enclosure->attributes())
                                                              {
                                                                  $image0 = $item->enclosure->attributes() ;
                                                                  $image_url = $image0 ['url'] ;
                                                              }

                                                         $result = array() ;
                                                         foreach($item as $k=>$v)
                                                                {
                                                                      $result[strtolower($k)] = strip_tags((string) $v) ;
                                                                }
                                                         if(isset($image_url{1}))
                                                            {
                                                              $result['image0'] = $image_url ;
                                                            }
                                                        $rss_summary['item'][] = $result ;
                                                     }
                                         }
                                      elseif(is_array($rss_feed->channel->entry) or is_object($rss_feed->channel->entry))
                                         {
                                             foreach($rss_feed->channel->entry as $item)
                                                     {
                                                         if($item->enclosure && $item->enclosure->attributes())
                                                              {
                                                                  $image0 = $item->enclosure->attributes() ;
                                                                  $image_url = $image0 ['url'] ;
                                                              }
                                                         $result = array() ;
                                                         foreach($item as $k=>$v)
                                                                {
                                                                      $result[strtolower($k)] = (string) $v ;
                                                                }
                                                         if(isset($image_url{1}))
                                                            {
                                                              $result['image0'] = $image_url ;
                                                            }
                                                        $rss_summary['item'][] = $result ;
                                                     }
                                         }
                              }
                            else
                              {
                                 if(is_array($rss_feed->item) or is_object($rss_feed->item))
                                         {
                                             foreach($rss_feed->item as $item)
                                                     {
                                                         if($item->enclosure && $item->enclosure->attributes())
                                                              {
                                                                  $image0 = $item->enclosure->attributes() ;
                                                                  $image_url = $image0 ['url'] ;
                                                              }
                                                         $result = array() ;
                                                         foreach($item as $k=>$v)
                                                                {
                                                                      $result[strtolower($k)] = (string) $v ;
                                                                }
                                                         if(isset($image_url{1}))
                                                            {
                                                              $result['image0'] = $image_url ;
                                                            }
                                                        $rss_summary['item'][] = $result ;
                                                     }
                                         }
                                      elseif(is_array($rss_feed->entry) or is_object($rss_feed->entry))
                                         {
                                             foreach($rss_feed->entry as $item)
                                                     {
                                                         if($item->enclosure && $item->enclosure->attributes())
                                                              {
                                                                  $image0 = $item->enclosure->attributes() ;
                                                                  $image_url = $image0 ['url'] ;
                                                              }
                                                         $result = array() ;
                                                         foreach($item as $k=>$v)
                                                                {
                                                                      $result[strtolower($k)] = (string) $v ;
                                                                }
                                                         if(isset($image_url{1}))
                                                            {
                                                              $result['image0'] = $image_url ;
                                                            }
                                                        $rss_summary['item'][] = $result ;
                                                     }
                                         }
                              }

                                if($return == 'json')
                                       {
                                         return json_encode($rss_summary) ;
                                       }
                                elseif($return == 'serialize')
                                       {
                                         return serialize($rss_summary) ;
                                       }
                                elseif($return == 'xml')
                                       {
                                         return xml_encode($rss_summary) ;
                                       }
                                else
                                       {
                                         return $rss_summary ;
                                       }

                            }
                        else
                            {
                              $this->xml_errors['fetch'] = 'No Xml Content' ;
                            }
                    }
*/

             protected function connect($link,$post='')
                    {
                      if(!filter_var($link, FILTER_VALIDATE_URL))
                              {
                                $this->xml_errors['connect'] = 'Not Vaild Link To Get data' ;
                                return false ;
                              }
                      if(function_exists('curl_init'))
                           {
                             $cu = curl_init();
                             curl_setopt($cu,CURLOPT_URL,$link);
                             curl_setopt($cu,CURLOPT_AUTOREFERER,true);

                             if($post != '')
                                {
                                    curl_setopt($cu,CURLOPT_HEADER, 1);
                                    curl_setopt($cu,CURLOPT_POST,3);
                                    curl_setopt($cu,CURLOPT_POSTFIELDS,$post);
                                }

                                 curl_setopt($cu,CURLOPT_USERAGENT,$_SERVER['HTTP_USER_AGENT']);
                                 curl_setopt($cu,CURLOPT_SSL_VERIFYPEER,false);
                                 curl_setopt($cu,CURLOPT_SSL_VERIFYHOST,false);
                                 curl_setopt($cu,CURLOPT_RETURNTRANSFER,true);

                             $co = curl_exec($cu) ;
                               if($co)
                                    {
                                        $con = $co ;
                                    }
                               else
                                    {
                                      $this->xml_errors['connect'] = 'No Result From Curl' ;
                                      $this->xml_errors['curl']  = curl_error($cu);
                                    }
                              curl_close($cu) ;
                           }

                    if(!$con and function_exists('ini_get'))
                        {

                             $url_fopen = ini_get('allow_url_fopen') ;

                             if($url_fopen == 0)
                                {
                                   if(function_exists('ini_set'))
                                        {
                                          ini_set('allow_url_fopen', 1) ;
                                        }
                                   $check_fopen = 1 ;
                                }
                             else
                                {
                                   $check_fopen = 0 ;
                                }

                             if($check_fopen == 1)
                                {
                                  $url_fopen = ini_get('allow_url_fopen') ;
                                }

                             if($url_fopen == 1)
                                {

                                  if(function_exists('file_get_contents') and !$con)
                                   {
                                        $con = @file_get_contents($link) ;
                                        if($con)
                                            {
                                              $con ;
                                            }
                                       else
                                            {
                                              $this->xml_errors['connect'] = 'No Result From file_get_contents' ;
                                            }
                                   }

                              elseif(function_exists('readfile') and !$con)
                                   {
                                        $con = @readfile($link);
                                        if($con)
                                            {
                                              $con ;
                                            }
                                       else
                                            {
                                              $this->xml_errors['connect'] = 'No Result From readfile' ;
                                            }
                                   }

                              elseif(function_exists('file') and !$con)
                                   {
                                        $con = @file($link)  ;
                                        if($con)
                                            {
                                               $con ;
                                            }
                                       else
                                            {
                                              $this->xml_errors['connect'] = 'No Result From file' ;
                                            }
                                   }

                                }
                        }

                      if(!$con)
                           {
                             $this->xml_errors['connect'] = 'Curl And Allow Url Fopen Disabled On Server' ;
                             return false ;
                           }
                      elseif(stripos($con,'DDoS protection by CloudFlare') and $this->xml_connect_count < 1)
                           {

                                echo '<h2> Curl Answer No : '.$this->xml_connect_count.' </h2>'.$con.'<br />';
                                preg_match('/'.preg_quote('.val(').'(.*?)'.preg_quote(');').'/is', $con, $match);
                $matc = str_replace('+', " + ", $match[1]) ;
                $matc = str_replace('*', " * ", $matc) ;
                $post = eval ("return $matc ;") ;
                $html=new DOMDocument();
                $html->loadHTML($con) ;
                $xpath = new DOMXPath($html);
                $tags = $xpath->query('//input[@type="hidden"]');
                $fields = array();
                foreach ($tags as $tag) {
                  $fields[trim($tag->getAttribute('name'))] = trim($tag->getAttribute('value')) ;
                }
                $post_data = 'act=jschl&jschl_vc='.$fields['jschl_vc'].'&jschl_answer='.$post ;
                 echo '<h2> I will post this info to curl </h2>'.$post_data.'<br /> ' ;
                $this->xml_connect_count = $this->xml_connect_count + 1 ;
                sleep(5) ;
                $con = $this->connect($link , $post_data) ;
                echo '<h2> Curl Answer No : 1 </h2>'. $con.'<br />' ;
                preg_match('/^Set-Cookie: (.*?);/m', $con, $m);
                echo '<h2> Cookie from Result </h2>' ;var_dump(parse_url($m[1]));
                           }
                      else
                           {
                             return $con ;
                           }
                    }

             public function get_error()
                    {
                       return $this->xml_errors ;
                    }

        }

?>

这是如何使用它

<?php
    $rss = new xml_grabber('xml.xml') ;
         $rss -> load() ;
    $x = $rss -> fetch() ;

    print_r ( $x ) ;   
?>

例子

<?xml version="1.0" encoding="Windows-1256"?>
  <rss version="2.0">
    <channel>
           <info name="xml_reader" vesrion="1.0" author="sec.php"></info>
           <title> Xml By sec.php </title>
           <company>
              <name>Test Co</name>
              <link href="link1" rel="self"/>
              <link href="link2" rel="www"/>
           </company>
           <company>
              <name>Test Co</name>
              <link href="link1" rel="self"/>
              <link href="link2" rel="www"/>
           </company>
           <company>
              <name>Test Co</name>
              <link href="link1" rel="self"/>
              <link href="link2" rel="www"/>
           </company>
    </channel>
  </rss>

结果数组([频道] => 数组([信息] => 数组([名称] => xml_reader [vesrion] => 1.0 [作者] => sec.php)

        [title] =>  Xml By sec.php 
        [item] => Array
            (
                [0] => Array
                    (
                        [name] => Test Co
                        [link] => Array
                            (
                                [0] => Array
                                    (
                                        [href] => link1
                                        [rel] => self
                                    )

                                [1] => Array
                                    (
                                        [href] => link2
                                        [rel] => www
                                    )

                            )

                    )

                [1] => Array
                    (
                        [name] => Test Co
                        [link] => Array
                            (
                                [0] => Array
                                    (
                                        [href] => link1
                                        [rel] => self
                                    )

                                [1] => Array
                                    (
                                        [href] => link2
                                        [rel] => www
                                    )

                            )

                    )

                [2] => Array
                    (
                        [name] => Test Co
                        [link] => Array
                            (
                                [0] => Array
                                    (
                                        [href] => link1
                                        [rel] => self
                                    )

                                [1] => Array
                                    (
                                        [href] => link2
                                        [rel] => www
                                    )

                            )

                    )

            )

    )

)

于 2012-10-16T16:28:59.113 回答