php to download an image onto server!

anotherF · 3 May 2006 at 14:06

I need to use php to grap a picture and store it on my server in a directory.

So if i feed it site.com/pic.jpg it will download it.

Beansprout · 3 May 2006 at 14:10

You can try fopen but your host might have allow_url_fopen turned off.

anotherF · 3 May 2006 at 14:24

just checked it's turned on, Cheers

robmiller · 3 May 2006 at 14:26

http://snoopy.sourceforge.net/

Code:

require_once 'snoopy.php';

$snoopy = new snoopy();

$snoopy->fetch('http://site.com/image.png');
$image = $snoopy->results;

$fh = fopen('image.png', 'w');
fwrite($fh, $image);
fclose($fh);

Writes site.com/image.png to ./image.png.

Edit: nevermind. With allow_url_fopen on:

PHP5:

Code:

file_put_contents('image.png', file_get_contents('http://site.com/image.png'));

PHP4:

Code:

$fh = fopen('image.png', 'w');
fwrite($fh, file_get_contents('http://site.com/image.png'));
fclose($fh);

Moredhel · 3 May 2006 at 14:30

This code will take a URL via the query string, download it and write it to a file called "imagefile".

If you want to change the image at all, you'll need to use the GD functions. You can also use them to verify it really is an image, and not a renamed file of some other kind.

[edit] Rob replied before me, this is essentially the same code but with error checking.

Code:

<?php
    if (isset($_GET['url']) && eregi("^(http://)?(([0-9a-z_!~*'().&=+$%-]+:)?[0-9a-z_!~*'().&=+$%-]+@)?((([12]?[0-9]{1,2}\.){3}[12]?[0-9]{1,2})|(([0-9a-z_!~*'()-]+\.)*([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.(com|net|org|edu|mil|gov|int|aero|coop|museum|name|info|biz|pro|[a-z]{2})))(:[1-6]?[0-9]{1,4})?((/?)|(/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+(\.jpg|\.gif|\.png|\.jpeg)$", $_GET['url'])) {
        $image = file_get_contents($_GET['url']);
        if (!$image) {
            die("Unable to fetch URL");
        }
        $f = fopen("imagefile", "w");
        if (!$f) {
            die("Unable to open file for writing");
        }
        fwrite($f, $image);
        fclose($f);
    } else {
        die("Invalid Image URL");
    }
?>

Beansprout · 3 May 2006 at 14:47

Why not just preg_match() (or ereg-whatever) the characters after the last full stop (ie the extension), rather than try and regex the whole URL....that one currently cuts out a whole bunch of the intarweb (.co.uk, .whatever.uk, and lottttttts of others)

Pine · 3 May 2006 at 15:35

Beansprout said:
Why not just preg_match() (or ereg-whatever) the characters after the last full stop (ie the extension), rather than try and regex the whole URL....that one currently cuts out a whole bunch of the intarweb (.co.uk, .whatever.uk, and lottttttts of others)

No it don't:

Code:

...(com|net|org|edu|mil|gov|int|aero|coop|museum|name|info|biz|pro|[b][a-z]{2}[/b])...

But I totally agree that it does seem a bit OTT.

EDIT: Actually, I think I'm being a right tit, Beansprout probably is right.

<--- Needs more sleep...

Beansprout · 3 May 2006 at 16:10

I got a bit lost in that huuuge regexp so I could be wrong. Either way I'd just do something like this...

Code:

preg_match("/\.(jp(e?)g|gif|png|(w?)bmp)$/i",$url);

Regular expressions are totally my antichrist though

All this is probably academic since the image could be dynamic, and you should use something like getimagesize() to get the image's mime type, too.