我正在尝试阅读新闻机构网站的 rss 并获取所有新闻的多个选项以保存在我的数据库中。所以我使用 php 函数作为 file_get_contents 或 cURl，但它需要大约一分钟来获取网站内容并分析它以分离我想要的新闻部分。

这是我从 rss 获取新闻数据的代码的一部分:

$rss = new DOMDocument();
$rss->load('http://isna.ir/fa/Sports/feed');
$feed = array();
foreach ($rss->getElementsByTagName('item') as $node) {
    $item = array ( 
        'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,
        'category' => $node->getElementsByTagName('category')->item(0)->nodeValue,
        'link' => $node->getElementsByTagName('link')->item(0)->nodeValue,
        'date' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue,
        );
    array_push($feed, $item);
}
$title = str_replace(' & ', ' & ', $feed[0]['title']);
    $link = $feed[0]['link'];
    $category = $feed[0]['category'];
    $date = date('l F d, Y', strtotime($feed[0]['date']));

在这部分我使用新闻链接从原始新闻页面获取照片:

$context = stream_context_create(array('http' => array('header'=>'Connection: close')));

$f = explode("news", $link);
$photo_link = $f[0]. 'photo' .$f[1];

$ff = file_get_contents($photo_link, false, $context);
$f1 = explode('<div class="news-image">', $ff);
$f2 = explode('<h1', $f1[1]);
$f3 = explode('href="', $f2[0]);
$f4 = explode('">', $f3[1]);
$image = $f4[0];

echo '<img src="' .$image. '"></img>';

大多数情况下是这样的:

Warning: file_get_contents(http://isna.ir/fa/photo/92040301515/مدافع-تیم-ملی-آلمان-از-فوتبال-خداحافظی-کرد) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in /opt/lampp/htdocs/example8/reader.php

我也使用了 cURL 函数，但并没有获得更好的结果!

最佳答案

试试这个

<?php
  $photo_link = explode( "news", $link );

  $first  = $photo_link[0];
  $last   = str_replace( basename( $photo_link[1] ), urlencode( basename( $photo_link[1] ) ), $photo_link[1] );

  $photo_link = $first."news".$last;
  print_r( file_get_contents( $photo_link, false, $context ) );
?>

所以你的完整代码应该是这样的

<?php
  $feed = array();
  $rss  = new DOMDocument();
  $rss->load( 'http://isna.ir/fa/Sports/feed' );

  foreach( $rss->getElementsByTagName( 'item' ) as $node ) {
    $feed[] = array(
      'title'     =>  str_replace( " & ", " &amp; ", $node->getElementsByTagName( 'title' )->item(0)->nodeValue ),
      'category'  =>  $node->getElementsByTagName( 'category' )->item(0)->nodeValue,
      'link'      =>  $node->getElementsByTagName( 'link' )->item(0)->nodeValue,
      'date'      =>  strtotime( $node->getElementsByTagName( 'pubDate' )->item(0)->nodeValue )
    );
  }

  $title    = $feed[0]["title"];
  $link     = $feed[0]["link"];
  $category = $feed[0]["category"];
  $date     = date( "l F d, Y", $feed[0]["date"] );

  print_r( $feed );

  $context  = stream_context_create(
    array(
      'http'  =>  array(
        'header'  =>  'Connection: close'
      )
    )
  );

  $f  = explode( "news", $link );

  /** My Code Starts **/
  $f[1] = str_replace( basename( $f[1] ), urlencode( basename( $f[1] ) ), $f[1] );
  /** My Code Ends **/

  $photo_link = $f[0]."photo".$f[1];

  $ff = file_get_contents( $photo_link, false, $context );
  $f1 = explode( '<div class="news-image">', $ff );
  $f2 = explode( '<h1', $f1[1] );
  $f3 = explode( 'href="', $f2[0] );
  $f4 = explode( '">', $f3[1] );
  $image  = $f4[0];

  echo '<img src="'.$image.'"></img>';
?>

关于PHP file_get_contents 很慢并返回 500 Internal Server Error，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17291374/