I want to open a ZIP file by passing a remote URL (http://www.example.com/file.zip or http://localhost/wordpress/wp-content/uploads/file.zip) instead of a file location (C:\wamp\www\wordpress\wp-content\uploads\file.zip)
This constructor works fine for a file location but not for a remote url of a file. How does one open a file using a remote URL for this scenario?
public function __construct($file = false)
{
if ($file && is_file($file)) {
//$file="C:\wamp\www\wordpress\wp-content\uploads\file.zip" here
$this->open($file);
$this->fileName = basename($this->filePath = $file);
} else {
throw new \Exception($file . " not a regular file");
}
}
The safest way is to
download the file
This is super easy if allow_url_fopen is enabled: file_get_contents() accepts remote URLs. If that's not enabled, use cURL or a Wordpress HTTP helper to download it.
save it locally
Also super easy, with file_put_contents(). The /tmp folder is probably writable for you. On Windows, I don't know where the tmp folder lives.
open it like any other
As you would a local ZIP archive, with ZipArchive::open() or your nameless class
just use php fopen function
http://php.net/manual/en/function.fopen.php
$handle = fopen("http://www.example.com/", "r");
I have used this to get the contents of a webpage but not a zip file - not sure if that will work but it did well for me. $contents definitely worked for text.
// For PHP 5 and up
$handle = fopen("https://www.thesiteyouwant.com/the_target_file.ext", "r");
$contents = stream_get_contents($handle);
http://php.net/manual/en/function.stream-get-contents.php
Related
Actually i want to send zip file to the dropbox .But when i try to open my file using fopen then this issue comes.
fopen(www.cloud01.wptemplate.net_09_10_2015_16_1444437876.zip): failed to open stream: No such file or directory in /home/cle1296/cloud01.wptemplate.net/wp-content/plugins/wp-cloud-safe/includes/UltimateBackup.php on line 830.
My server is dreamhost.I execute the same code on another server and don't face any issue.It seems that dreamhost disabled the fopen function.So kindly give me an alternative way
function sendToDropbox() {
try {
$this->log('Sending file to DropBox');
$dbxClient = new dbx\Client($this->dropboxGeneratedAccessToken, "PHP-Example/1.0");
$f = fopen($this->backupFilename, "r+");
$dbxClient->uploadFile($this->dropboxUploadPath . $this->backupFilename, dbx\WriteMode::add(), $f);
} catch (Exception $e) {
$this->log('ERROR while uploading file to DropBox');
}
}
The path to the file obviously is not correct, either because the file does not exist or simply what you passed to fopen() is not the actual location of the backup. Use the full path to the file to be absolutely sure, for example if your backup is at:
/home/cle1296/cloud01.wptemplate.net/my_backups/backup.zip
...then make sure to pass it to your fopen() and you shouldn't have any issues.
Helping a friend with an issue he's having. His site is using a fopen function to open a file and save the changes to it but the fopen is failing with a "Permission Denied" error. The file is on a remote server and permissions seem to be correct.
The code he is using is...
if (isset($_POST['save'])) {
$filepath = "string.txt";
if (file_exists($filepath)) {
$file = fopen($filepath, "w+");
fwrite($file, $_POST['save']);
fclose($file);
}
}
I used VolkerK's code here php fopen returns false but file is readable/writable to ascertain the read/write permissions and get the following.
PHP Version: 5.4.9
Uname: Windows NT
{File} exists
{File} is readable
{File} is writable
Last error: array(4){["type']=>int(2)["message"]=>string(131 "fopen({file}):failed to open stream: Permission denied.
At first I thought it was a file permissions problem but I think if the file is being seen by PHP as writable this should not be the issue, do I read that correctly?
Tried FTP and got there. Had to properly set context options for FTP connection though.
Thanks for pointing me in the right direction.
if (isset($_POST['save'])) {
//Setup FTP connection
$ftp = "ftp://user:password#example.com/filepath/filename.txt";
//Set FTP Options
$stream_options = array('ftp' => array('overwrite' => true));
$stream_context = stream_context_create($stream_options);
//Open file and write changes
if (file_exists($ftp)) {
$file = fopen($ftp, "w", 0 , $stream_context);
fwrite($file, $_POST['save']);
fclose($file);
}
}
I have a zip file into a directory like this:
drwxr-xr-x 2 salome salome 4096 Dec 16 17:41 staff.zip
When I unzip the file with ZipArchive class, all the upzipped files are owner by nobody user. Is there a way to avoid this owner change?
I am able to use ftp if it is required (only as salome user).
This script eventually will be shared at multiple hosts, so the idea is keep it as generic as possible.
You might consider extending the zipArchive class and override the extractTo method to also perform a chown() on the files in the directory.
Based on the use case you discussed in the comments, you also might want to consider the use of the Phar archive format. php.net/manual/en/intro.phar.php
Phar's would allow your module submitters to submit a file file of executable PHP code that you would not need to extract at all.
Ok, I have resolved the problem of nobody user. I will try to explain all my workaround.
#Mike Brant's answer
Mike suggest to me make use of chown() function overriding extractTo() method. Well, before to willing with it, I tested the chown() function standalone constantly it printed the error:
failed to create stream: Permission denied in ...
Looks like chown will not work for the major shared hostings
FTP functions
So, keeping going I though that FTP functions I made a script that works fine, at least for now xD. This is a resume what the script does for one zipped file:
Create a temp file using tmpfile().
Using ftp_fput() to put the temp file in the current directory with the zipped file.
Give write permissions using ftp_site and CHMOD 0777.
Read the zipped file content with $content = $zip->getFromName('zipped-file.txt');.
Put the content to the new file using fputs($fp, $content);.
Close connections
The code below illustrates the complete process
$zip = new ZipArchive;
$ftp_path_to_unzip = '/public_html/ejemplos/php/ftp/upload/';
$local_path_to_unzip = '/home/user/public_html/ejemplos/php/ftp/upload/';
if ($zip->open('test.zip') == TRUE) {
//connect to the ftp server
$conn_id = ftp_connect('ftp.example.com');
$login_result = ftp_login($conn_id, 'user', 'password');
//if the connection is ok, then...
if ($login_result) {
//iterate each zipped file
for ($i = 0; $i < $zip->numFiles; $i++) {
$filename = $zip->getNameIndex($i);
//create a "local" temp file in order to put it "remotely" in the same machine
$temp = tmpfile();
//create the new file with the same name from the extracted file in question
ftp_fput($conn_id, $ftp_path_to_unzip . $filename, $temp, FTP_ASCII);
//set write permissions, eventually we will put its content
ftp_site($conn_id, "CHMOD 0777 " . $ftp_path_to_unzip . $filename);
//open the new file that we have created
$fp = fopen($local_path_to_unzip . $filename, 'w');
//put the content from zipped file
$content = $zip->getFromName($filename);
fputs($fp, $content);
//close the file
fclose($fp);
//now only the owner can write the file
ftp_site($conn_id, "CHMOD 0644 " . $ftp_path_to_unzip . $filename);
}
}
// close the connection and the file handler
ftp_close($conn_id);
//close the zip file
$zip->close();
}
This is the firt step to start a more complex customization, because the code above is not able to know if the zipped file is a "directory" or "file".
We have a bunch of linuix and windows servers.
On my windows desktop I can see all the shares.
Using PHP I'm attempting to write a file to a directory on a windows share using the UNC path.
//ServerShare/directory/file.txt
Using fwrite says it successfully wrote the file but the file never exists on the server.
Using opendir function says the directory isn't accessible.
This is the source pretty simple.
$file_name = "\\SERVER2\Share\CPI\data.txt";
if (!$handle = fopen($file_name, 'w')) {
echo "Cannot open file ($file_name)";
exit;
}
// Write $somecontent to our opened file.
$somecontent = "this is a test";
if (fwrite($handle, $somecontent) === FALSE) {
echo "Cannot write to file ($filename)";
exit;
}
echo "Success, wrote ($somecontent) to file ($file_name)";
fclose($handle);
Any thoughts on what types of permissions need to be set to let a linux box write files to a windows box?
You should be mounting the fileshare to a local directory:
mount -f smbfs //user#server2/Share/CPI/Data.txt /media/share
Then access /media/share/Share/CPI/Data.txt from your PHP script.
PHP needs to authenticate to the share, even if it is public, and using fopen or opendir does not do this.
I am trying to read a video file uploaded on server using fopen and fread in php but fopen returns "unable to open file".
//test.php
<?php
$file=fopen("abc.mov","r") or exit("Unable to open file!");
?>
abc.mov exists in the same folder where test.php is located on the server i.e, at the same hierarchy.
I don't why it isn't able to read the file.
Please help.
This probably isn't a real problem with PHP or your file. This is most likely a problem with the permissions of the file. There are three things you can try here(probably more I don't know of). One, do this somewhere before the fopen in your script:
chmod("abc.mov", 0777);
Then echo fileperms(), just to check(take out after debug):
echo fileperms("abc.mov");
And lastly, before calling fopen, make sure that is_readable and file_exists return true:
if(file_exists("abc.mov") and is_readable("abc.mov")) {
$file = fopen("abc.mov","r") or exit("Unable to open file!");
}
else die("File isn't readable, or maybe doesn't even exist!");
Note: I would be using file_get_contents() and file_put_contents() rather than fopen.
Hope this helps!
Check your file access permissions to make sure you've got access to the file from PHP.