cURL

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<?php
//1.初始化
$ch=curl_init();
//2.设置选项，包括URL
$url="http://static.cnbetacdn.com/newsimg/2013/1107/70_1383785654.png_w600.png";//"http://www.php.net"
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);//将curl_exec()获取的信息以文件流的形式返回，而不是直接输出
                                          //启用时会将头文件的信息作为数据流输出
curl_setopt($ch,CURLOPT_HEADER,1);
//3.执行并获取HTML文档内容
$output=curl_exec($ch);
if($output===false){ //错误检查
   echo "curl Error:".curl_error($ch);
}
$info=curl_getinfo($ch);//获取curl执行后这一请求相关信息
echo '<pre>';
print_r($info);
echo '</pre>';
echo '获取'.$info['url'].'耗时'.$info['total_time'].'秒';
file_put_contents('./test.png',$output);
$size=filesize('./test.png');
if($size!=$info['size_download']){
   echo '下载数据不完全';
}else{
   echo '下载数据完全';
}
//4.释放curl句柄
curl_close($ch);

//echo $output;

Demo

<?php$binfo =array('Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; InfoPath.2; AskTbPTV/5.17.0.25589; Alexa Toolbar)','Mozilla/5.0 (Windows NT 5.1; rv:22.0) Gecko/20100101 Firefox/22.0','Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET4.0C; Alexa Toolbar)','Mozilla/4.0(compatible; MSIE 6.0; Windows NT 5.1; SV1)',$_SERVER['HTTP_USER_AGENT']);//伪造头信息header$cip = '123.125.68.'.mt_rand(0,254);$xip = '125.90.88.'.mt_rand(0,254);$header = array( 'CLIENT-IP:'.$cip, 'X-FORWARDED-FOR:'.$xip, );function getinfo( $url,$userinfo,$header){ $ch = curl_init(); $timeout = 5; curl_setopt ($ch, CURLOPT_URL, "$url"); curl_setopt ($ch, CURLOPT_HTTPHEADER, $header); curl_setopt ($ch, CURLOPT_REFERER, "http://www.baidu.com/");  curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_USERAGENT, "$userinfo"); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);   $contents = curl_exec($ch); curl_close($ch); return $contents;}$url ='http://www.baidu.com';$u = $binfo[mt_rand(0,3)];$con = getinfo($url,$u,$header);print_r($con) ;exit;?>

PHP中的数据传输神器cURL

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