ImageMagick: watermark logo

composite logo.png photo.jpeg -dissolve 90% -gravity NorthEast test.jpg

To tile the watermark:

composite logo.pngphoto.jpeg -dissolve 55% -tile  test.jpg

ImageMagick: remove background color (make transparent background)

convert input.png -transparent white -fuzz 90% output.png

Replace “white” with the color you want to replace, or “rgba(0,0,0,0)” to set it to a custom value. “Fuzz” is the tolerance.

HTML5 for Webdesigners (PDF format)

Dive into HTML5 (online)

Course specification (PDF)

Cheat sheet (PDF)

To animate a set of images to GIF:

convert -resize 20% -delay 44 -loop 0 frame*.png output.gif

Example here

PHP 7 new features and – in particular – new interpreter.

Slides from a short talk.

PHP 7.0 new features (and new interpreter) from Andrea Telatin

$userAgent = getBrowser();
echo $userAgent['name'];

Excellent tutorial online introducing the “VideoStream” PHP class:
http://codesamplez.com/programming/php-html5-video-streaming-tutorial

Then use HTML5 video tag as shown in here,

<video width="100%">
 <source src="/player.php" type="video/mp4">
 Your browser does not support the video tag.
</video>