[RSS+PHP(?)]RSS Feed in Signature Image...

[adickt]

This is the code that I did for the OSNN Latest News banner/sigs

it fetches the information from the RSS feed and parses it, the charData function is the place where it only gets x number of entries

If I get some time, I might polish this code up a bit

<?php
/**********************************
* OSNN VirtuaNews RDF Parser
*
* Author: StealthNinja
* eMail: coder@stealth-ninja.co.uk
*
* Written for: ElectronicPunk
*
* Description:
*  Reads the OSNN RDF backend
*  and then parses that file to
*  obtain the current headlines
*  for inclusion into an image
**********************************/

// variable definitions
// Image Vars
$image = "banner_468x60_var1_back.jpg";        // image dimensions 468x60px
$font  = "verdana.ttf";
$size  = 7;
$horiz = 185;
$vert  = 16;
$maxlen= 60;

// RDF Parsing Vars
$url   = "http://www.osnn.net/modules.php?modname=backend&action=rdf";
$temp  = "temp.xml";
$store = 0;
$count = 0;
$maxent= 4;
$array = array();

// XML parsing functions
function openTag($parser, $name, $attrs) {
    global $store;
     
    if ($name == "TITLE") {
        $store = 1;
    } else {
        $store = 0;
    }
}

function closeTag($parser, $name) {
    // w00p de doo
}

function charData($parser, $data) {
    global $store, $array;

    if ($store == 1 && $count <= $maxent) {
        $array[] = $data;
        $store = 0;
        $count++;
    }
}

function storeXML($filename, $string) {
    $string = ereg_replace('&amp;', 'and', $string);
    $string = ereg_replace('&', 'and', $string);
    $fp = fopen($filename, "w") or die ("unable to open storage file for writing<br />\nif it exists then chmod {$filename} to 666");
    $write = fwrite($fp, $string);
    fclose($fp);
    return $write;
}

// define the parser
$parser = xml_parser_create();
xml_set_element_handler($parser, "openTag", "closeTag");
xml_set_character_data_handler($parser, "charData");

if (!(storeXML($temp, file_get_contents($url)))) {
    die ("Unable to store OSNN RDF Data");
}
if (!($handle = fopen($temp, "r"))) {
    die ("Unable to open Temp store<br />\nif it exists then chmod {$temp} to 666");
}


while ($data = fread($handle, filesize($temp))) {
    if (!xml_parse($parser, $data, feof($handle))) {
        die (xml_error_string(xml_get_error_code($parser)));
    }
}

xml_parser_free($parser);

// make sure no strings are too long
foreach ($array as $key => $value) {
    if (strlen($value) > $maxlen) {
        $array[$key] = substr($value, 0, 45) . "..";
    }
}

reset($array);

// Image Creation
$imgData = getimagesize($image);
if ($imgData[2] == 1) {
    header("Content-type: image/gif");
    $im = ImageCreateFromGIF($image);
} else {
    header("Content-type: image/jpeg");
    $im = ImageCreateFromJPEG($image);
}

$textc = ImageColorAllocate($im,64,89,132);
$black = ImageColorAllocate($im,0,0,0);

ImageTTFText($im,$size,0,$horiz,$vert,$textc,$font,$array[1]);
ImageTTFText($im,$size,0,$horiz,$vert+12,$textc,$font,$array[2]);
ImageTTFText($im,$size,0,$horiz,$vert+24,$textc,$font,$array[3]);
ImageTTFText($im,$size,0,$horiz,$vert+36,$textc,$font,$array[4]);

if ($imgData[2] == 1) {
    ImageGIF($im);
} else {
    ImageJPEG($im,'',100);
}

ImageDestroy($im);
?>

Geffy.. thanks for this code, you have saved me loads of time and here is what i ended up doing for the members of my CSS clan..


http://www.clan-km.com/sig/

and with a few added bits you i got it to import images and change the text

http://www.clan-km.com/sig/?name=[KM]%20ShadowDog&img=http://www.clan-km.com/components/com_simpleboard/avatars/62.gif

ive also sorted it out to take in any rss feed as well..

http://www.clan-km.com/sig/?url=htt.../rss/newsonline_uk_edition/front_page/rss.xml

 

[kcnychief]

Nice work with the code adickt, hope you stick around for a bit

 

[Grandmaster]

BUMP!

How would I get apostrophe's to display correctly in the post titles? As you can see, every post title with an apostrophe in it gets all the characters after the apostrophe cut off.

 

[Geffy]

I'll take a look after work, see if I can't improve its character handling.

 

[Grandmaster]

Thank you sir :smoker:

 

[Geffy]

I remembered I wrote a PHP4 RSS Parser class on here a while back so think I'll use that, I think that it properly handles ' characters and such. Checking now.

 

[Geffy]

Can someone test this for me. I've not got an overlay image handy.

This version doesn't need a temp.xml file, it also does not seem to have the same issue as the previous code or my RSS_Parser class which seems to ignore text after a ' character for some reason.

Changes:
Supports PNG background images
More easily configurable text colour
Properly supports more than 4 entries into the image file
Properly trims lines longer than $text_max_chars. It will chop off characters $text_max_chars - 15 before adding the "..." string to the end. This should ensure it wont overflow the image file.

Shorter!! Now only 71 lines of code by taking advantage of the xml_parse_into_struct function.

<?php
// Image Configuration 
$image_filename     = "banner_468x60_var1_back.jpg";    // Path to background image
$image_fontfile     = "verdana.ttf";                    // Path to font file
$text_font_size     = 7;                                // Size in Points
$text_left_shift    = 185;                              // Number of pixels from the left to place the text
$text_top_shift     = 16;                               // Number of pixels from the top to place the text
$text_max_chars     = 60;                               // Maximum number of charaters to show before adding '...'

$text_colour_red    = 64;                               // Text colour red value
$text_colour_green  = 89;                               // Text colour green value
$text_colour_blue   = 132;                              // Text colour blue value

// RSS Configuration
$rss_feed_url       = "http://www.osnn.net/modules.php?modname=backend&action=rdf"; 
$number_of_entries  = 4;

// Go for code
$parser = xml_parser_create();
xml_parse_into_struct($parser, file_get_contents($rss_feed_url), $values, $tag_index);

$title_tags = array_slice($tag_index['TITLE'], 1, $number_of_entries);

// Image Creation 
$imgData = getimagesize($image_filename);
header("Content-type: {$imgData['mime']}");

switch($imgData[2]) {
    case IMAGETYPE_GIF:
        $im = ImageCreateFromGIF($image_filename);
        $imageOutputFunc = 'ImageGIF';
        break;
    case IMAGETYPE_JPEG:
        $im = ImageCreateFromJPEG($image_filename);
        $imageOutputFunc = 'ImageJPEG';
        break;
    case IMAGETYPE_PNG:
        $im = ImageCreateFromPNG($image_filename);
        $imageOutputFunc = 'ImagePNG';
        break;
    default:
        die ("Unsupported Image Type");
}

$black = ImageColorAllocate($im,0,0,0);
$text_colour = ImageColorAllocate($im, 
    $text_colour_red, $text_colour_green, $text_colour_blue); 

$vertical_offset = 0;

foreach ($title_tags as $i) {
    if (strlen($values[$i]['value']) > $text_max_chars) {
        $title = substr($values[$i]['value'], 0, $text_max_chars - 15) . "...";
    } else {
        $title = $values[$i]['value'];
    }
    
    ImageTTFText($im, $text_font_size, 0,
        $text_left_shift, $text_top_shift + $vertical_offset, 
        $text_colour, $image_fontfile, $title);
    $vertical_offset += 12;
}

if ($imgData[2] == IMAGETYPE_JPEG) { 
    $imageOutputFunc($im, '', 100);
} else { 
    $imageOutputFunc($im);  // GIF and PNG output funcs take same args
} 

ImageDestroy($im);
?>

 

[madmatt]

How did you get so dang smart with this stuff?

 

[Geffy]

How did you get so dang smart with this stuff?

Dunno, I just play with it.

 

[Grandmaster]

Awesome

The character encoding is great now. Does this support transparent PNGs? I'm giving it a transparent PNG but it outputs a non-transparent PNG.

 

[Geffy]

Awesome

The character encoding is great now. Does this support transparent PNGs? I'm giving it a transparent PNG but it outputs a non-transparent PNG.

Try this, it looks like it works.

Honestly I am slightly amazed that the definition of the "output" function within the switch/case actually works, but thats the beauty of scripting languages.

<?php 
// Image Configuration  
$image_filename     = "background.png";     // Path to background image 
$image_fontfile     = "verdana.ttf";        // Path to font file 
$text_font_size     = 10;                   // Size in Points 
$text_left_shift    = 5;                    // Number of pixels from the left to place the text 
$text_top_shift     = 60;                   // Number of pixels from the top to place the text 
$text_max_chars     = 40;                   // Maximum number of charaters to show before adding '...' 

$text_colour_red    = 64;                   // Text colour red value 
$text_colour_green  = 89;                   // Text colour green value 
$text_colour_blue   = 132;                  // Text colour blue value 

// RSS Configuration 
$rss_feed_url       = "http://domain.com/feed.xml";  
$number_of_entries  = 6;

// Go for code
$parser = xml_parser_create();
xml_parse_into_struct($parser,
    file_get_contents($rss_feed_url), $values, $tag_index); 

$title_tags = array_slice($tag_index['TITLE'], 1, $number_of_entries); 

// Image Creation  
$imgData = getimagesize($image_filename); 
header("Content-type: {$imgData['mime']}"); 

switch($imgData[2]) { 
    case IMAGETYPE_GIF: 
        $im = ImageCreateFromGIF($image_filename);
        
        function output($im) {
            ImageGIF($im);
        }
        
        break; 
    case IMAGETYPE_JPEG: 
        $im = ImageCreateFromJPEG($image_filename);
        
        function output($im) {
            ImageJPEG($im, '', 100);
        }
        
        break; 
    case IMAGETYPE_PNG: 
        $im = ImageCreateFromPNG($image_filename);
        ImageAlphaBlending($im, false);
        
        function output($im) {
            ImageSaveAlpha($im, true);
            ImagePNG($im);
        }
        
        break; 
    default: 
        die ("Unsupported Image Type"); 
} 

$black = ImageColorAllocate($im,0,0,0); 
$text_colour = ImageColorAllocate($im,  
    $text_colour_red, $text_colour_green, $text_colour_blue);  

$vertical_offset = 0; 

foreach ($title_tags as $i) { 
    if (strlen($values[$i]['value']) > $text_max_chars) { 
        $title = substr($values[$i]['value'], 0, $text_max_chars - 5) . "..."; 
    } else { 
        $title = $values[$i]['value']; 
    } 
     
    ImageTTFText($im, $text_font_size, 0, 
        $text_left_shift, $text_top_shift + $vertical_offset,  
        $text_colour, $image_fontfile, $title); 
    $vertical_offset += 12; 
} 

output($im);

ImageDestroy($im);
?>

 

[X-Istence]

defining a function within a switch/case statement. Just wait till the next version of PHP (6) screws that up when they properly implement scopes.

 

[Grandmaster]

Thanks again mate.

Looks like I'm going to learn PHP

 

[Geffy]

This version uses the create_function method which means it should still work in PHP 6

<?php  
// Image Configuration   
$image_filename     = "background.png";     // Path to background image  
$image_fontfile     = "verdana.ttf";        // Path to font file  
$text_font_size     = 10;                   // Size in Points  
$text_left_shift    = 5;                    // Number of pixels from the left to place the text  
$text_top_shift     = 60;                   // Number of pixels from the top to place the text  
$text_max_chars     = 40;                   // Maximum number of charaters to show before adding '...'  

$text_colour_red    = 64;                   // Text colour red value  
$text_colour_green  = 89;                   // Text colour green value  
$text_colour_blue   = 132;                  // Text colour blue value  

// RSS Configuration  
$rss_feed_url       = "http://domain.com/feed.xml";   
$number_of_entries  = 6; 

// Go for code 
$parser = xml_parser_create(); 
xml_parse_into_struct($parser, 
    file_get_contents($rss_feed_url), $values, $tag_index);  

$title_tags = array_slice($tag_index['TITLE'], 1, $number_of_entries);  

// Image Creation   
$imgData = getimagesize($image_filename);  
header("Content-type: {$imgData['mime']}");  

$output = '';
switch($imgData[2]) { 
    case IMAGETYPE_GIF: 
        $im = ImageCreateFromGIF($image_filename);
        $output = create_function('$im', 'ImageGIF($im);');
        break; 
    case IMAGETYPE_JPEG: 
        $im = ImageCreateFromJPEG($image_filename);
        $output = create_function('$im', 'ImageJPEG($im, "", 100);');
        break; 
    case IMAGETYPE_PNG: 
        $im = ImageCreateFromPNG($image_filename);
              ImageAlphaBlending($im, false);
        $output = create_function('$im', 'ImageSaveAlpha($im, true); ImagePNG($im);');
        break; 
    default: 
        die ("Unsupported Image Type"); 
}

$black = ImageColorAllocate($im,0,0,0);  
$text_colour = ImageColorAllocate($im,   
    $text_colour_red, $text_colour_green, $text_colour_blue);   

$vertical_offset = 0;  

foreach ($title_tags as $i) {  
    if (strlen($values[$i]['value']) > $text_max_chars) {  
        $title = substr($values[$i]['value'], 0, $text_max_chars - 5) . "...";  
    } else {  
        $title = $values[$i]['value'];  
    }  
      
    ImageTTFText($im, $text_font_size, 0,  
        $text_left_shift, $text_top_shift + $vertical_offset,   
        $text_colour, $image_fontfile, $title);  
    $vertical_offset += 12;  
}  

$output($im); 

ImageDestroy($im);
?>

 

[madmatt]

Stop showing off. But have a cookie anyway.

 

[Geffy]

w00 cookies