我想更改通过curl嵌入代码的页面的favicon。我试着在代码之前添加favicon，然而，favicon仍然被替换。
<html>
<link rel="shortcut icon" type="image/x-icon" href="./favicon.ico"/>
<?php
$ch = curl_init();
$options = array(CURLOPT_URL => 'nicovideo.jp',
CURLOPT_HEADER => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true
);
curl_setopt_array($ch, $options);
$output = curl_exec($ch);
curl_close($ch);
echo $output;
?>
</html>
如何在没有favicon的情况下卷曲网站，或者使用DOM更改关于图标src/href的所有代码？
从远程站点获取源代码并使用DOMDocument操作内容非常简单。
<?php
$ch = curl_init();
$options = array(
CURLOPT_URL => 'nicovideo.jp',
CURLOPT_HEADER => false,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true
);
curl_setopt_array($ch, $options);
$output = curl_exec($ch);
curl_close($ch);
/* Create DOM object */
libxml_use_internal_errors( true );
$dom = new DOMDocument('1.0','utf-8');
$dom->validateOnParse=false;
$dom->standalone=true;
$dom->strictErrorChecking=false;
$dom->recover=true;
$dom->loadHTML( $output );
$parse_errs=serialize( libxml_get_last_error() );
libxml_clear_errors();
/* Get all the nodes you are interested in */
$col=$dom->getElementsByTagName('link');
foreach( $col as $node ){
/* loop through nodes to find those of interest */
if( $node->hasAttribute('rel') && $node->getAttribute('rel')=='shortcut icon' ){
/* set the new attribute value */
$node->setAttribute( 'href', 'https://'.$_SERVER['SERVER_NAME'].'/favicon.ico' );
}
}
/* show the final result */
echo $dom->saveHTML();
$dom=null;
?>