1:file_get_contents
echo file_get_contents("http://www.php.com/index.php");
2:curl
function getFile($url,$save_dir='',$filename='',$type=0){
if(trim($url)==''){
return false;
}
if(trim($save_dir)==''){
$save_dir='./';
}
if(0!==strrpos($save_dir,'/')){
$save_dir.='/';
}
//创建保存目录
if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
return false;
}
//获取远程文件所采用的方法
if($type){
$ch=curl_init();
$timeout=5;
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$content=curl_exec($ch);
curl_close($ch);
}else{
ob_start();
readfile($url);
$content=ob_get_contents();
ob_end_clean();
}
$size=strlen($content);
//文件大小
$fp2=@fopen($save_dir.$filename,'a');
fwrite($fp2,$content);
fclose($fp2);
unset($content,$url);
return array('file_name'=>$filename,'save_path'=>$save_dir.$filename);
}
getFile($url,$save_dir,$filename,1)//调用
3:stream_get_contents
$readcontents=fopen("http://www.php.com/index.php","rb");
$contents=stream_get_contents($readcontents);//这个函数有两个参数stream_get_contents($readcontents,-1,-1)
fclose($readcontents);