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的代碼是這樣如何使用IMG:PHP在 '說明'
$url = array("http://www.samples.com/rss"
" ............ "
" ............ ");
for($j=0;$j<count($url);++$j){
$num = $j + 1;
$xmlDoc = new DOMDocument();
$xmlDoc->load($url[$j]);
//get elements from "<channel>"
$channel=$xmlDoc->getElementsByTagName('channel')->item(0);
$channel_title = $channel->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
$channel_link = $channel->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;
$channel_desc = $channel->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;
$x=$xmlDoc->getElementsByTagName('item');
for ($i = 0 ; $i < $x->length ; ++$i){
1)標題$item_title=$x->item($i)->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
2)鏈接$item_link=$x->item($i)->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;
3)說明$item_desc=$x->item($i)->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;
$query[$j]['title'] = $item_title;
$query[$j]['field'] = "xml";
$query[$j]['id'] = $item_link;
$query[$j]['description'] = $item_desc;
}
}
我想在3)得到第一個img用於描述。也許有很多img在描述中。但我想先img。我如何獲取img或src?