xaa*_*aav 324 php http download stream
嗯,这个看起来很简单,而且确实如此.要将文件下载到服务器,您只需:
file_put_contents("Tmpfile.zip", file_get_contents("http://someurl/file.zip"));
只有一个问题.如果您有一个大文件,如100mb,该怎么办？然后,您将耗尽内存,无法下载该文件.
我想要的是一种在我下载文件时将文件写入磁盘的方法.这样,我可以下载更大的文件,而不会遇到内存问题.
ale*_*lex 469
从PHP 5.1.0开始,file_put_contents()支持通过传递stream-handle作为$data参数逐个编写:
file_put_contents("Tmpfile.zip", fopen("http://someurl/file.zip", 'r'));
从手册:
如果数据 [即第二个参数]是流资源,则该流的剩余缓冲区将被复制到指定的文件.这与使用类似
stream_copy_to_stream().
(谢谢哈克.)
xaa*_*aav 130
private function downloadFile($url, $path)
{
$newfname = $path;
$file = fopen ($url, 'rb');
if ($file) {
$newf = fopen ($newfname, 'wb');
if ($newf) {
while(!feof($file)) {
fwrite($newf, fread($file, 1024 * 8), 1024 * 8);
}
}
}
if ($file) {
fclose($file);
}
if ($newf) {
fclose($newf);
}
}
pro*_*son 65
尝试使用cURL
set_time_limit(0); // unlimited max execution time
$options = array(
CURLOPT_FILE => '/path/to/download/the/file/to.zip',
CURLOPT_TIMEOUT => 28800, // set this to 8 hours so we dont timeout on big files
CURLOPT_URL => 'http://remoteserver.com/path/to/big/file.zip',
);
$ch = curl_init();
curl_setopt_array($ch, $options);
curl_exec($ch);
curl_close($ch);
我不确定,但我相信CURLOPT_FILE它在写入数据时所写的选项,即.没有缓冲.
Kam*_*ski 20
上面有代码(引用prodigitalson)代码wchih不起作用(原因:在CURLOPT_FILE中缺少fopen - http://www.webdeveloper.com/forum/showthread.php?268299-RESOLVED-PHP-script-for-a- cronjob-download-file-unpzck-run-another-php-script).我不能在那里添加评论因为我的点数太少所以下面我给出了工作示例(它也适用于"本地网址"):
function downloadUrlToFile($url, $outFileName)
{
if(is_file($url)) {
copy($url, $outFileName);
} else {
$options = array(
CURLOPT_FILE => fopen($outFileName, 'w'),
CURLOPT_TIMEOUT => 28800, // set this to 8 hours so we dont timeout on big files
CURLOPT_URL => $url
);
$ch = curl_init();
curl_setopt_array($ch, $options);
curl_exec($ch);
curl_close($ch);
}
}
小智 19
.php文件中并在目标服务器中运行<html>
<form method="post">
<input name="url" size="50" />
<input name="submit" type="submit" />
</form>
<?php
// maximum execution time in seconds
set_time_limit (24 * 60 * 60);
if (!isset($_POST['submit'])) die();
// folder to save downloaded files to. must end with slash
$destination_folder = 'downloads/';
$url = $_POST['url'];
$newfname = $destination_folder . basename($url);
$file = fopen ($url, "rb");
if ($file) {
$newf = fopen ($newfname, "wb");
if ($newf)
while(!feof($file)) {
fwrite($newf, fread($file, 1024 * 8 ), 1024 * 8 );
}
}
if ($file) {
fclose($file);
}
if ($newf) {
fclose($newf);
}
?>
</html>
小智 16
set_time_limit(0);
$file = file_get_contents('path of your file');
file_put_contents('file.ext', $file);
在php中使用一个简单的方法 copy()
copy($source_url, $local_path_with_file_name);
注意:如果目标文件已存在,则将覆盖该文件
特别注意:不要忘记为目标文件夹设置权限777
我用它来下载文件
function cURLcheckBasicFunctions()
{
if( !function_exists("curl_init") &&
!function_exists("curl_setopt") &&
!function_exists("curl_exec") &&
!function_exists("curl_close") ) return false;
else return true;
}
/*
* Returns string status information.
* Can be changed to int or bool return types.
*/
function cURLdownload($url, $file)
{
if( !cURLcheckBasicFunctions() ) return "UNAVAILABLE: cURL Basic Functions";
$ch = curl_init();
if($ch)
{
$fp = fopen($file, "w");
if($fp)
{
if( !curl_setopt($ch, CURLOPT_URL, $url) )
{
fclose($fp); // to match fopen()
curl_close($ch); // to match curl_init()
return "FAIL: curl_setopt(CURLOPT_URL)";
}
if ((!ini_get('open_basedir') && !ini_get('safe_mode')) || $redirects < 1) {
curl_setopt($ch, CURLOPT_USERAGENT, '"Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071204 Ubuntu/7.10 (gutsy) Firefox/2.0.0.11');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//curl_setopt($ch, CURLOPT_REFERER, 'http://domain.com/');
if( !curl_setopt($ch, CURLOPT_HEADER, $curlopt_header)) return "FAIL: curl_setopt(CURLOPT_HEADER)";
if( !curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $redirects > 0)) return "FAIL: curl_setopt(CURLOPT_FOLLOWLOCATION)";
if( !curl_setopt($ch, CURLOPT_FILE, $fp) ) return "FAIL: curl_setopt(CURLOPT_FILE)";
if( !curl_setopt($ch, CURLOPT_MAXREDIRS, $redirects) ) return "FAIL: curl_setopt(CURLOPT_MAXREDIRS)";
return curl_exec($ch);
} else {
curl_setopt($ch, CURLOPT_USERAGENT, '"Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071204 Ubuntu/7.10 (gutsy) Firefox/2.0.0.11');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//curl_setopt($ch, CURLOPT_REFERER, 'http://domain.com/');
if( !curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false)) return "FAIL: curl_setopt(CURLOPT_FOLLOWLOCATION)";
if( !curl_setopt($ch, CURLOPT_FILE, $fp) ) return "FAIL: curl_setopt(CURLOPT_FILE)";
if( !curl_setopt($ch, CURLOPT_HEADER, true)) return "FAIL: curl_setopt(CURLOPT_HEADER)";
if( !curl_setopt($ch, CURLOPT_RETURNTRANSFER, true)) return "FAIL: curl_setopt(CURLOPT_RETURNTRANSFER)";
if( !curl_setopt($ch, CURLOPT_FORBID_REUSE, false)) return "FAIL: curl_setopt(CURLOPT_FORBID_REUSE)";
curl_setopt($ch, CURLOPT_USERAGENT, '"Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071204 Ubuntu/7.10 (gutsy) Firefox/2.0.0.11');
}
// if( !curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true) ) return "FAIL: curl_setopt(CURLOPT_FOLLOWLOCATION)";
// if( !curl_setopt($ch, CURLOPT_FILE, $fp) ) return "FAIL: curl_setopt(CURLOPT_FILE)";
// if( !curl_setopt($ch, CURLOPT_HEADER, 0) ) return "FAIL: curl_setopt(CURLOPT_HEADER)";
if( !curl_exec($ch) ) return "FAIL: curl_exec()";
curl_close($ch);
fclose($fp);
return "SUCCESS: $file [$url]";
}
else return "FAIL: fopen()";
}
else return "FAIL: curl_init()";
}