php如何下载动态图片保存到本地？

php 远程下载文件

function httpcopy($url, $file="", $timeout=60) {

$file = empty($file) ? pathinfo($url,PATHINFO_BASENAME) : $file;

$dir = pathinfo($file,PATHINFO_DIRNAME);

!is_dir($dir) && @mkdir($dir,0755,true);

$url = str_replace(" ","%20",$url);

if(function_exists('curl_init')) {

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

$temp = curl_exec($ch);

if(@file_put_contents($file, $temp) && !curl_error($ch)) {

return $file;

} else {

return false;

}

} else {

$opts = array(

"http"=>array(

"method"=>"GET",

"header"=>"",

"timeout"=>$timeout)

);

$context = stream_context_create($opts);

if(@copy($url, $file, $context)) {

//$http_response_header

return $file;

} else {

return false;

}

}

}