PHP/GD + RSS

Marsh Posté le 13-05-2008 à 14:37:16

Bonjour,

Je commence à m'autoformer sur les biblio GD. J'ai récupéré ce bout de code, qui permet de faire un image à partir d'un flux rss :

Code :

<?php
$url = "http://www.kerweb.fr/wp-rss.php"; //Should be a full URL, not a local reference.
$displayname = "Kerweb.fr";
$middle = "dernierement :";
$rssHeadline = 0; //Which headline to display. 0 is the latest, 1 is the 1st one before the latest, 2 is the 2nd before latest, etc
$filename = "sig.jpg"; //File name to save the image as
$minutes = 5; //How often to update the image. 0 indicates that image updates every time it is called (heavy strain on bandwidth & server)
$forcewidth = 0; //If set to 0, image will be as long as it needs to be. If set to anything else, image will be set at a forced width. Any text that doesn't fit will be cut off
//In-URL definitions. Allows you to customize the image while calling it. If you're worried that others may
//be exploiting your server to run their own image, remove the following chunk or comment it. Also note, when
//using an in-URL definition, image file will not be created and the RSS file will be querried each time. This
//should only be used wisely.
if ($_GET['url']) { $url = $_GET['url']; $minutes = 0; $save = FALSE;}
if ($_GET['displayname']) { $displayname = $_GET['displayname']; $minutes = 0; $save = FALSE;}
if ($_GET['middle']) { $middle = $_GET['middle']; $minutes = 0; $save = FALSE;}
if ($_GET['rssHeadline']) { $rssHeadline = $_GET['rssHeadline']; $minutes = 0; $save = FALSE;}
if ($_GET['forcewidth']) { $forcewidth = $_GET['forcewidth']; $minutes = 0; $save = FALSE;}
//If file's modify time is too recent, just load the image instead of creating it again
if ($minutes > 0 && is_file($filename) && ((time()-filemtime($filename)) < ($minutes * 60))) {
header("Content-type: image/jpeg" );
$im = imagecreatefromjpeg($filename);
imagejpeg($im,"",100);
die;
}
$rdfHandle = fopen($url,"r" ) ; // Open the RDF file for reading
$rdfData = fread($rdfHandle,10000) ; // Read in the RDF data.
$rdfData = chop($rdfData); // Strip any whitespace from the end of the string
$rdfData = ereg_replace("[\r,\n]", "", $rdfData); //Clear line breaks
$rdfData = strstr($rdfData,"<item" ); //Remove everything before <item>.
$rdfData = str_replace("<item>","", $rdfData); //Remove <item> itself
$rdfData = urldecode($rdfData); //Replace any silly %20-type characters with their readable replacement.
$rdfArray = explode("</item>",$rdfData); //Creates an Array from all the headlines
$title = ereg_replace("<title>","",$rdfArray[$rssHeadline]); // Remove the leading <title> tags from the selected headline
$title = str_replace(strstr($title,"</title>" ),"",$title); // Remove </title> and anything after it
$title = trim($title);
// create the image with appropriate dimensions
$width = ((strlen($title) + strlen($middle) + strlen($displayname)) * ImageFontWidth(2)) + 10;
if ($forcewidth > 0) { $width = $forcewidth;}
$im = imagecreate($width, 15);
$bg = imagecolorallocate($im, 255, 255, 255); //Color of background; currently white
$textcolor = imagecolorallocate($im, 0, 0, 0); //Color of text; currently black
$middlecolor = imagecolorallocate($im, 128, 128, 128);//Color of $middle text; currently gray
// Write the string onto the image then save it
imagestring($im, 2, $width - (strlen($title) * 6) - (strlen($middle) * 6) - 4, 1, $middle, $middlecolor);
imagestring($im, 2, $width - (strlen($title) * 6), 1, $title, $textcolor);
imagestring($im, 2, 2, 1, $displayname, $textcolor);
if ($save != FALSE) { imagejpeg($im,$filename,100); }//Save file
// output the image
header("Content-type: image/jpeg" );
imagejpeg($im,"",100);
?>

Et voilà ce que ça donne :

Est-ce que vous voyez pourquoi je n'arrive pas à récupérer ce flux rss (qui fonctionne pourtant bien chez moi) ?

Merci d'avance à ceux qui pourront m'aiguiller. :hello:

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Marsh Posté le 13-05-2008 à 14:37:16

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Marsh Posté le 14-05-2008 à 16:34:46

C'est quoi ce parsing xml :ouch:
A mon avis, avant de vouloir afficher ton feed rss dans une image, essai déjà de l'afficher simplement en texte en refaisant correctement ton parsing xml.
Pour cela tu peux te servir de ca : http://fr.php.net/manual/en/book.dom.php

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Marsh Posté le 15-05-2008 à 00:31:23

J'étais parti de la mauvaise méthode, en essayant de reprendre un code existant...

J'ai maintenant réussi à bien récupérer mon flux rss, je vais reprendre à 0 pour en faire une image clean.

Si quelqu'un aurait un site clair sur la façon de procéder je suis preneur

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