怎么用PHP抓取网站HTML

http://detail.tmall.com/item.htm?spm=a230r.1.0.0.MlI5e4&id=40364502055&ad_id=&am_id=&cm_id=140105335569ed55e27b&pm_id=&abbucket=12

<?php 	$url="http://detail.tmall.com/item.htm?spm=a230r.1.0.0.MlI5e4&id=40364502055&ad_id=&am_id=&cm_id=140105335569ed55e27b&pm_id";	$content = getcurl($url);	echo $content;	    function getcurl($url){		$ch = curl_init(); 		curl_setopt($ch, CURLOPT_URL, $url);		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);		curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);		curl_setopt($ch, CURLOPT_MAXREDIRS,20);		$file_contents = curl_exec($ch);		return $file_contents;		curl_close($ch);    }?>