Well, this one seems quite simple, and it is. All you have to do to download a file to your server is:
这个看起来很简单。下载文件到服务器所需要做的就是:
file_put_contents("Tmpfile.zip", file_get_contents("http://someurl/file.zip"));
Only there is one problem. What if you have a large file, like 100mb. Then, you will run out of memory, and not be able to download the file.
只有一个问题。如果您有一个大型文件，比如100mb，该怎么办?然后，您将耗尽内存，无法下载文件。
What I want is a way to write the file to the disk as I am downloading it. That way, I can download bigger files, without running into memory problems.
我想要的是在下载文件时将文件写入磁盘。这样，我可以下载更大的文件，而不会遇到内存问题。
10 个解决方案
#1
377
Since PHP 5.1.0, file_put_contents() supports writing piece-by-piece by passing a stream-handle as the $data parameter:
自从PHP 5.1.0以来，file_put_contents()通过将一个流句柄作为$data参数传递来支持逐个编写:
file_put_contents("Tmpfile.zip", fopen("http://someurl/file.zip", 'r'));
From the manual:
从手册:
If data [that is the second argument] is a stream resource, the remaining buffer of that stream will be copied to the specified file. This is similar with using
stream_copy_to_stream().如果数据[那是第二个参数]是一个流资源，那么该流的其余缓冲区将被复制到指定的文件中。这与使用stream_copy_to_stream()类似。
(Thanks Hakre.)
(谢谢Hakre。)
#2
112
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);
}
}
#3
53
Try using cURL
试着用旋度
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($ch);
I'm not sure but I believe with the CURLOPT_FILE option it writes as it pulls the data, ie. not buffered.
我不确定，但我相信它在获取数据时使用CURLOPT_FILE选项。没有缓冲。
#4
17
- Create a folder called "downloads" in destination server
- 在目标服务器中创建一个名为“downloads”的文件夹
- Save [this code] into
.phpfile and run in destination server - 将[此代码]保存到.php文件中，并在目标服务器中运行
Downloader :
<html>
<form method="post">
<input name="url" size="50" />
<input name="submit" type="submit" />
</form>
<?php
// maximum execution time in seconds
set_time_limit (24 * 60 * 60);
if (!isset($_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>
#5
14
Above there is examle (cited by prodigitalson) of code wchih not work (reason: missing fopen in CURLOPT_FILE - http://www.webdeveloper.com/forum/showthread.php?268299-RESOLVED-PHP-script-for-a-cronjob-download-file-unpzck-run-another-php-script ). I cant add comment there becose I have too low number of points so Below I give working example (it also work for "local url"):
上面有一个代码wchih不工作(原因:CURLOPT_FILE中缺少fopen的原因:http://www.webdeveloper.com/forum/showthread.php?)268299 -解决- php脚本- - -计划-下载-文件- unpzck -运行-另一个php脚本)。我不能在这里添加注释，因为我的点太少了，所以下面我给出一个工作示例(它也适用于“本地url”):
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);
}
}
#6
12
set_time_limit(0);
$file = file_get_contents('path of your file');
file_put_contents('file.ext', $file);
#7
5
I use this to download file
我用这个下载文件
function cURLcheckBasicFunctions()
{
if( !function_exists("curl_init") &&
!function_exists("curl_setopt") &&
!function_exists("curl_exec") &&
!function_exists("curl_close") ) return false;
else return true;
}
/*
* Returns string status information.
* Can be changed to int or bool return types.
*/
function cURLdownload($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()";
}
#8
5
There are 3 ways:
有三个方面:
- file_get_contents and file_put_contents
- 函数和写入
- CURL
- 旋度
- fopen
- 打开外部文件
You can find examples from here.
你可以从这里找到例子。
#9
4
A PHP 4 & 5 Solution:
PHP 4和5解决方案:
readfile() will not present any memory issues, even when sending large files, on its own. A URL can be used as a filename with this function if the fopen wrappers have been enabled.
readfile()本身不会出现任何内存问题，即使在发送大型文件时也是如此。如果启用了fopen包装器，那么可以使用URL作为这个函数的文件名。
http://php.net/manual/en/function.readfile.php
http://php.net/manual/en/function.readfile.php
#10
3
Use a simple method in php copy()
在php copy()中使用一个简单的方法
copy($source_url, $local_path_with_file_name);
Note: if the destination file already exists, it will be overwritten
注意:如果目标文件已经存在，它将被覆盖
PHP副本()函数
Special Note: Don't forget to set permission 777 for the destination folder
特别注意:不要忘记为目标文件夹设置权限为777。
#1
377
Since PHP 5.1.0, file_put_contents() supports writing piece-by-piece by passing a stream-handle as the $data parameter:
自从PHP 5.1.0以来，file_put_contents()通过将一个流句柄作为$data参数传递来支持逐个编写:
file_put_contents("Tmpfile.zip", fopen("http://someurl/file.zip", 'r'));
From the manual:
从手册:
If data [that is the second argument] is a stream resource, the remaining buffer of that stream will be copied to the specified file. This is similar with using
stream_copy_to_stream().如果数据[那是第二个参数]是一个流资源，那么该流的其余缓冲区将被复制到指定的文件中。这与使用stream_copy_to_stream()类似。
(Thanks Hakre.)
(谢谢Hakre。)
#2
112
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);
}
}
#3
53
Try using cURL
试着用旋度
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($ch);
I'm not sure but I believe with the CURLOPT_FILE option it writes as it pulls the data, ie. not buffered.
我不确定，但我相信它在获取数据时使用CURLOPT_FILE选项。没有缓冲。
#4
17
- Create a folder called "downloads" in destination server
- 在目标服务器中创建一个名为“downloads”的文件夹
- Save [this code] into
.phpfile and run in destination server - 将[此代码]保存到.php文件中，并在目标服务器中运行
Downloader :
<html>
<form method="post">
<input name="url" size="50" />
<input name="submit" type="submit" />
</form>
<?php
// maximum execution time in seconds
set_time_limit (24 * 60 * 60);
if (!isset($_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>
#5
14
Above there is examle (cited by prodigitalson) of code wchih not work (reason: missing fopen in CURLOPT_FILE - http://www.webdeveloper.com/forum/showthread.php?268299-RESOLVED-PHP-script-for-a-cronjob-download-file-unpzck-run-another-php-script ). I cant add comment there becose I have too low number of points so Below I give working example (it also work for "local url"):
上面有一个代码wchih不工作(原因:CURLOPT_FILE中缺少fopen的原因:http://www.webdeveloper.com/forum/showthread.php?)268299 -解决- php脚本- - -计划-下载-文件- unpzck -运行-另一个php脚本)。我不能在这里添加注释，因为我的点太少了，所以下面我给出一个工作示例(它也适用于“本地url”):
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);
}
}
#6
12
set_time_limit(0);
$file = file_get_contents('path of your file');
file_put_contents('file.ext', $file);
#7
5
I use this to download file
我用这个下载文件
function cURLcheckBasicFunctions()
{
if( !function_exists("curl_init") &&
!function_exists("curl_setopt") &&
!function_exists("curl_exec") &&
!function_exists("curl_close") ) return false;
else return true;
}
/*
* Returns string status information.
* Can be changed to int or bool return types.
*/
function cURLdownload($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()";
}
#8
5
There are 3 ways:
有三个方面:
- file_get_contents and file_put_contents
- 函数和写入
- CURL
- 旋度
- fopen
- 打开外部文件
You can find examples from here.
你可以从这里找到例子。
#9
4
A PHP 4 & 5 Solution:
PHP 4和5解决方案:
readfile() will not present any memory issues, even when sending large files, on its own. A URL can be used as a filename with this function if the fopen wrappers have been enabled.
readfile()本身不会出现任何内存问题，即使在发送大型文件时也是如此。如果启用了fopen包装器，那么可以使用URL作为这个函数的文件名。
http://php.net/manual/en/function.readfile.php
http://php.net/manual/en/function.readfile.php
#10
3
Use a simple method in php copy()
在php copy()中使用一个简单的方法
copy($source_url, $local_path_with_file_name);
Note: if the destination file already exists, it will be overwritten
注意:如果目标文件已经存在，它将被覆盖
PHP副本()函数
Special Note: Don't forget to set permission 777 for the destination folder
特别注意:不要忘记为目标文件夹设置权限为777。