1. Python Check For Existence Of File
2. Matlab Check For Existence Of File
3. Php Check For Exists Of Remote File
4. Check For Existence Of File In Bash
5. Oracle Check For Existence Of Table

I am having roblems with locating a PHP script to allow me to obtain the contents of a txt file on a remote server, then output to a variable. Outputting something to a variable is not the hard part. It's the picking up and reading the contents of the file that's the hard part. Anyone have any ideas?

I have trawled the forum and can only locate a method that works locally. Not ideal as the target is remote.

Check if remote file exists. If it exists i have to delete it and after this i can move the source file. But to check, if the file exists seems to be a new problem. Php code to check if a user submitted link (file or torrent) exists on remote site and get its file size,seeder and leecher count. Code will be added to an existing site and a list of sites will be provided for testing. Using remote files. Call will fail if the remote file already exists. If allow_url_fopen is disabled in php.ini you can use CURL function for check file exist. Test if a remote url exists with PHP and CURL If you have to test if a local file exists you will probably use the php file_exists function, but if check url Curl and File_get_contents get_headers regular expressions url validator.

The objective really is, how do I find out if a file exists on the remote server and output a status in html.

• With PHP 7.0 on Ubuntu 17.04 and with the option allow_url_fopen=On, file_exists() returns always false when trying to check a remote file via HTTP.
• Note that project_t4 at hotmail dot com's example above doesn't work in general, though it works on his Win2K/Apache server; as far as I can tell there is no way to check over ftp whether a directory exists.
• As we noted, you can also check for the existence of a file using WMI. The nice thing about using WMI is that the same script can run against remote computers as well as local computers; all you have to do is change the name of the computer and have at it.

Ideas?

5 Answers

Assuming your remote server is accessible by http or ftp you can use file_exists():

or

Python Check For Existence Of File

Use this:

Source: http://www.php.net/manual/en/function.file-exists.php#75064

Amal MuraliAmal Murali

You can try to use this code:

As you can see $path is the path of your file. Of course you can write anything else instead of those echo.

Alberto MiolaAlberto Miola

Accessing files on other servers can be quite tricky! If you have access to the file via ftp, you can use ftp to fetch the file, for example with ftp_fget().

Matlab Check For Existence Of File

If you do not have access to the file-system via ssh, you only can check the response the server gives when requesting the file. If the server responds with an error 404, the file is either not existent or it is not accessible via http due to the server configuration.

You can check this through curl, see this tutorial for a detailled explanation of obtaining the response code through curl.

Php Check For Exists Of Remote File

Lars EbertLars Ebert

Check For Existence Of File In Bash

I know this is an old thread, but as Lars Ebert points out, checking for the existence of a file on a remote server can be tricky, so checking the server response, using cURL, is how I have been able to do it on our big travel site. Using file_exists() threw an error every time, but checking for a '200 OK' has proved quite successful. Here is the code we are using to check for images for our hotel listings page: Epson perfection 1260 driver windows 10.

Where 'http://pathto/remote_file.png' is the remote image we seek, but we need to know whether it is really there. And 'pathto/graphics/backup_image.png' is what we display if the remote image does not exist.

By using this tool you will be able to effortlessly download, install and test utilities like Spip, WordPress, PrestaShop, Joomla!, Phorum, phpBB, and many others. Easyphp windows 10. The application also includes a series of additional tools, such as PhpMyAdmin, Xdebug, a MySQL server and an Apache server. Pros • The software can be easily deployed and configured.

I know it's awfully verbose, compared to file_exists(), but it's also more accurate, at least so far.

Not the answer you're looking for? Browse other questions tagged phphtmltext-files or ask your own question.

As long as allow_url_fopen is enabled in php.ini, you can use HTTP and FTP URLs with most of the functions that take a filename as a parameter. In addition, URLs can be used with the include, include_once, require and require_once statements (since PHP 5.2.0, allow_url_include must be enabled for these). See Supported Protocols and Wrappers for more information about the protocols supported by PHP.

For example, you can use this to open a file on a remote web server, parse the output for the data you want, and then use that data in a database query, or simply to output it in a style matching the rest of your website.

Example #1 Getting the title of a remote page

You can also write to files on an FTP server (provided that you have connected as a user with the correct access rights). You can only create new files using this method; if you try to overwrite a file that already exists, the fopen() call will fail.

Oracle Check For Existence Of Table

To connect as a user other than 'anonymous', you need to specify the username (and possibly password) within the URL, such as 'ftp://user:password@ftp.example.com/path/to/file'. (You can use the same sort of syntax to access files via HTTP when they require Basic authentication.)

Example #2 Storing data on a remote server

Note:

You might get the idea from the example above that you can use this technique to write to a remote log file. Unfortunately that would not work because the fopen() call will fail if the remote file already exists. To do distributed logging like that, you should take a look at syslog().