在 simplehtmldom 上使用 allow_url_fopen 的 simplexml 补丁

Question

我的托管公司已禁用 allow_url_fopen 和 allow_url_include。他们建议我改用 cURL，然后我在 simplexml 上看到了这个补丁

$calendar = simplexml_load_file($source); with
if (ini_get('allow_url_fopen')) {
$calendar =       simplexml_load_file($source); 
}   
else {    
$ch = curl_init($source);    
curl_setopt  ($ch, CURLOPT_HEADER, false); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    
$xml_raw = curl_exec($ch);    
$calendar = simplexml_load_string($xml_raw);  }

它适用于我的主机，所以我想知道是否可以在 simplehtmldom 上使用它这是我正在使用的代码

<?php
include('simple_html_dom.php');
include ('phpQuery.php');   
// Create DOM from URL
$html = file_get_html('http://www.urlhere.com/');
   ?>

我可以用这个吗？如果是，我应该进行哪些更改，谢谢您的帮助

修改了上面的代码

<?php
include('simple_html_dom.php'); 
include ('phpQuery.php'); 

if (ini_get('allow_url_fopen')) {       
$html = file_get_html('http://www.weather.bm/'); }
else{       $ch = curl_init('http://www.weather.bm/');           
curl_setopt  ($ch, CURLOPT_HEADER, false);        
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);           
$src = curl_exec($ch);           
$html = str_get_html($src, false); 
var_dump($html);  }   

?>

<div id="leftwrapper">
<div id="CurrentConditions">
<h2>Current Conditions</h2>

<div id="current-content">
<div id="elementleft">
<?php
foreach($html->find('div.obElementLeft') as $e)
echo $e->outertext;
?>
</div>
<div id="elementright"><?php 
foreach($html->find('div.obElementRight') as $e)
echo $e->outertext; 
?>
</div></div></div>
<div id="rightwrapper"> 
<div id="TodayForecast">
<h2>24-Hour Forecast</h2>
<?php 
foreach($html->find('.TodaysForecastContainer') as $e)
$doc = phpQuery::newDocumentHTML( $e );  
$containers = pq('.TodaysForecastContainerInner', $doc); 
foreach( $containers as $container ) {     
$div = pq('div', $container);      
$div->eq(1)->removeAttr('style')->addClass('thumbnail')->
html( pq( 'img', $div->eq(1))->removeAttr('height')->
removeAttr('width')->removeAttr('alt') ); 
$div->eq(0)->removeAttr('style')->addClass('day')-> 
html( pq( 'u', $div->eq(0) )->html() );           
$div->eq(2)->removeAttr('style')->addClass('description');   }  
print $doc; 
?>

</div><!--end of todayforecast--> 
<div id="bws-foot">Weather data provided in part by the Bermuda Weather
Service</div>     <img id="bws-logo" src="images/bwslogo.jpg" />
<div id="hilo">
<p>Today's Temperature:</p>
<?php
foreach($html->find('div.HiLoContainer') as $e)
$doc = phpQuery::newDocumentHTML( $e );  
$containers = pq('div.HiLoContainer', $doc); 
foreach( $containers as $container ) {     $div = pq('div', $container);        
$div->eq(0)->removeAttr('style')->addClass('hi1');  
$div->eq(1)->removeAttr('style')->addClass('lo1'); 
}  print $doc; 
?>

展望

find('.SynopsisContainer span') as $e) 回声 $e->innertext 。 '
'; ?>

4 天天气预报

foreach($html->find('.FourDayForecastContainer') as $e)

$doc = phpQuery::newDocumentHTML($e);
$containers = pq ('.FourDayForecastContainerInner', $doc); foreach( $containers as $container ) { $div = pq('span', $container);
$img = pq('img', $container);
$div->eq(0)->removeAttr('style')->addClass('day')-> html( pq( 'u', $div->eq(0) )->html() );

$img->eq(0)->removeAttr('style')->removeAttr('height')-> removeAttr('width')->removeAttr('alt')->addClass('thumbnail')-> html( pq( 'img', $img->eq(0)) );$imghtml = pq('a', $container)-> html(); pq($container)->prepend($imghtml); pq('a', $container)->remove();
$div->eq(1)->removeAttr('style')->addClass('hi');
$div->eq(3)->removeAttr('style')->addClass('lo'); $div->eq(5)->removeAttr('style')->addClass('description'); } 打印 $doc; ?>

Answer 1

您需要编辑 simple_html_dom 源代码。创建自己的功能来完成原始功能会更容易。原来的（因为allow_url_fopen不能使用）是：

function file_get_html() {
    $dom = new simple_html_dom;
    $args = func_get_args();
    @$dom->load(call_user_func_array('file_get_contents', $args), true);
    if (($error=error_get_last())!==null)
    throw new Exception($error['message']);
    return $dom;
}

你可以这样做：

if (ini_get('allow_url_fopen')) {
      $html = file_get_html('http://www.urlhere.com/');
}else{
      $ch = curl_init('http://www.urlhere.com/');    
      curl_setopt  ($ch, CURLOPT_HEADER, false); 
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    
      $src = curl_exec($ch);    
      $html = str_get_html($src, false);
}

无需修改源代码，有效地做同样的事情。

Answer 2

另一种选择是使用data:// 流包装器，它允许您使用file_get_html() 函数而无需更改它。

if (!ini_get('allow_url_fopen')) {
    $ch = curl_init($source);    
    curl_setopt($ch, CURLOPT_HEADER, false); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    
    $xml_raw = curl_exec($ch); 
    curl_close($ch);   
    $source  = 'data://text/html;base64,'.base64_encode($xml_raw);
}
$html = file_get_html($source);

此方法使用 PHP 5.2.0 及更高版本支持的 RFC 2397 数据 URL 方案。