[php] Simplepie & Picasa Webalbums.

[zingysaturn]

Well, since google's embedding feature on picasa web albums links to their own website and i'd quite like to keep my own branding I used the simplepie php parser to use their RSS feed.

This might be really obvious and i'm probably being stupid, but I got it working so that it returns the link for each photo in an IMG tag quite happily.

<img src="https://lh4.google.com/image/MaxAWoolf/RnJQiIcFy0I/AAAAAAAAAQI/LeZIkAZlJIs/view4.jpg" alt="A Picture" width="512" height="512"/>

And I know the links work, because when you put them in the address bar it prompts you to download them, but the picture doesn't load and it just shows me the alt text!

Help me!!

[AoM_Scott]

The prompting to download part is the problem. The browser doesn't want to display them normally because they have content-disposition headers, so to get it to work you'll have to find another link for the photo.. that doesn't have this header attached to it.

Scott

[zingysaturn]

I'm getting the impression google block this intentionally. All the other links in the RSS feed prompt me to download too.

Any other work arounds?

[AoM_Scott]

Well it's them adding the header so it most likely is the reason behind it. Sorry, don't use Picasa Webalbums so not aware of any workarounds other than saving the images and uploading them to your site.. which you probably don't want to do..

Scott

[zingysaturn]

Indeed not, ah well, I might just have to upload them myself. Thanks for your help!

[AnthonySterling]

Hope this helps....

Save As DisplayPic.php

<?php
$picture = $_GET['googlepic'];
$ch = curl_init("$picture");
curl_setopt( $ch, CURLOPT_USERAGENT, "Internet Explorer" );
header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
header( 'Cache-Control: no-store, no-cache, must-revalidate' );
header( 'Cache-Control: post-check=0, pre-check=0', false );
header( 'Pragma: no-cache' );
curl_exec($ch);
curl_close($ch);
?>

USAGE:

<p>
<img border="0"
src="https://your-server/displaypic.php?googlepic=http://lh4.google.com/image/MaxAWoolf/RnJQiIcFy0I/AAAAAAAAAQI/LeZIkAZlJIs/view4.jpg" width="512" height="512">
</p>

SilverB.

Quick and dirty, but should work!!!

:shiftyninja:

[zingysaturn]

Fantastic! Thank you so much :D Worked a charm!

[AnthonySterling]

Most welcome! :cool:

[+Nik Louch Subscriber²]

I'm getting this error:

Fatal error: Call to undefined function curl_init() in C:\wamp\www\displaypic.php on line 3

Sorry - didn't enable CURL!

[AnthonySterling]

You don't have cURL installed, try this.

demo.php

<?php
require_once('class.NamespaceNulledXMLDocument.php');
$sData = @file_get_contents('localFeed.xml');
$oDocument = simplexml_import_dom( new NamespaceNulledXMLDocument( $sData ) );
echo sprintf("<h1>Album %s by %s</h1>\r\n",(String)$oDocument->name,(String)$oDocument->user);
echo "<hr />\r\n";
foreach ($oDocument->entry as $oEntry)
{
	echo sprintf("<h2>%s</h2>\r\n",(String)$oEntry->title);
	echo '<ul>';
	echo sprintf("<li>%s: %s</li>\r\n",'Height',(Integer)$oEntry->height);
	echo sprintf("<li>%s: %s</li>\r\n",'Width',(Integer)$oEntry->width);
	echo sprintf("<li>%s: %s bytes.</li>\r\n",'Size',(Integer)$oEntry->size);
	echo "</ul>\r\n";
	echo sprintf('<img src="picasaImage.php?picasaImage=%s" alt="%s" />',base64_encode((String)$oEntry->content['src']),(String)$oEntry->title);
}
?>

picasaImage.php

<?php
if( isset($_GET['picasaImage']) )
{
	$sImageURL = base64_decode( $_GET['picasaImage'] );
	if( $sImageData = @file_get_contents($sImageURL) )
	{
		header( 'Expires: Mon, 26 Jul 1997 05:00:00 GMT' );
		header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
		header( 'Content-Type: image/jpg' );
		header( 'Cache-Control: no-store, no-cache, must-revalidate' );
		header( 'Cache-Control: post-check=0, pre-check=0', false );
		header( 'Pragma: no-cache' );
		echo $sImageData;
		exit;
	}
}
exit;
?>

Place both of those on your server, it should do the trick.

SilverB.

Edited September 24, 2008 by SilverBulletUK