Uploading images from a url naming dilemma - php

Question

Let's say I have an image URL
http://website.com/content/image.png
I want to grab that image and place it in my own server, but I want to rename it beforehand so I can store the location in the database.
I am using the following code:
$url = 'http://website.com/content/image.png';
/* Extract the filename */
$filename = substr($url, strrpos($url, '/') + 1);
/* Save file wherever you want */
file_put_contents('upload/'.$filename, file_get_contents($url));
If I want to rename the file to something entirely new, but keep the extension in tact, how can I accomplish that? Also will this work if there is more content in the url?
For example instead of:
url here/content/image.png
It would be:
url here/content/stuff/images/image.png
I am basically trying to write a universal function that will take a URL to an image, upload it to my server, and rename that image to what I want while keeping the extension in tact.

Answer 1

First- You need to check if your webserver can access URL's from another server.
Second- Assuming you can:
$url = 'http://website.com/content/image.png';
$extension = end(explode(".", $url));
$filename = "the_filename_you_want.".$extension;
file_put_contents('upload/'.$filename, file_get_contents($url));

Answer 2

<?php
$url = 'http://www.bla.org/img/derp.jpg';
$extension = end(explode('.', $url));
file_put_contents('/tmp/image.'.$extension, file_get_contents($url));

Answer 3

$filename = substr($url, strrpos($url, '.'));

Answer 4

You need pathinfo:
$url = 'http://website.com/content/image.png';
$path = parse_url($url, PHP_URL_PATH);
/* Extract the filename and extension */
$filename = pathinfo($path, PATHINFO_FILENAME);
$extension = pathinfo($path, PATHINFO_EXTENSION);
/* Save file wherever you want */
file_put_contents('upload/' . $filename . '.' . $extension, file_get_contents($url));

Answer 5

You might want to look at parse_url() function to get at the various URL components.
Like:
$url_parts = parse_url($url);
$uri = $url_parts['path'];
Then use pathinfo() to break up the components of the URI into path, filename, extension, etc.
$uri_info = pathinfo($uri);
$dir_name = $uri_info['dirname'];
$file_name = $uri_info['filename'];
$file_basename = $uri_info['basename'];
$file_extension = $uri_info['extension'];