README

Given a background image and RSS feed titles from the RSS feed will be overlaid on the background image.

This code is in the Public Domain.

Originally developed at http://forum.osnn.net/showthread.php?t=52418

gistfile2.php

<?php
// Code is in the Public Domain.
// Author: Geoff Garside
// URL: http://gist.github.com/4222

// 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);
?>