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    <p>That's a little bit of a strange request :)</p> <p>So, what you'd want to use here is php-gd, for a start. Generally this is included when installing php on any OS with decent repo's, but just incase it isn't for you, you can get the installation instructions here;</p> <p><a href="http://www.php.net/manual/en/image.setup.php" rel="nofollow">http://www.php.net/manual/en/image.setup.php</a></p> <p>First, we'll need to figure out exactly how big the image will need to be in width; height will obviously always be one.</p> <p>So;</p> <pre><code>$str = $_GET['str']; $img_width = strlen($str); </code></pre> <p>strlen will tell us how many characters are in the $str string, and since we're giving one pixel per character, the amount of characters will give us the required width.</p> <p>For ease of access, split the string into an array - with each element for each separate pixel.</p> <pre><code>$color_array = str_split($str); </code></pre> <p>Now, let's set up a "pointer", for which pixel we're drawing to. It's php so you don't NEED to initalise this, but it's nice to be tidy.</p> <pre><code>$current_px = (int) 0; </code></pre> <p>And now you can initialise GD and start making the image;</p> <pre><code>$im = imagecreatetruecolor($img_width, 1); // Initialise colours; $black = imagecolorallocate($im, 0, 0, 0); $white = imagecolorallocate($im, 255, 255, 255); // Now, start running through the array foreach ($color_array as $y) { if ($y == 1) { imagesetpixel ( $im, $current_px , 1 , $black ); } $current_px++; // Don't need to "draw" a white pixel for 0. Just draw nothing and add to the counter. } </code></pre> <p>This will draw your image, then all you need do is display it;</p> <pre><code>header('Content-type: image/png'); imagepng($im); imagedestroy($im); </code></pre> <p>Note that the $white declaration isn't needed at all - I just left it in to give you an idea of how you declare different colours with gd.</p> <p>You'll probably need to debug this a bit before using it - it's been a long time since I've used GD. Anyway, hope this helps!</p>
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    1. POCreate 1 bit bitmap (monochrome) in php
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    1. COThank you for your reply but I'm looking for a bmp generator 1bit monochrome, possibly in pure php. Finally I found the correct way and the solution and now I can generate a correct 1bit bmp monochrome image! With this solution I can generate a barcode raster image with the lowest possible dimension ready for the print ripper.
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    2. COAh, I see. Well, I found some classes that can assist you with using GD to create BMP images; you can find these here: http://www.phpclasses.org/package/5991-PHP-Load-and-save-images-in-the-BMP-format.html I hope the rest of the info was at least useful to you :)
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    3. CO@htmlandrea: would be nice if you could share the solution...
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