Overlay some text on an animated gif using GD?

[gausie]

Hi there!

 

I've got a couple of gifs that I'd like to randomly pick. I got that sorted with this:

 

<?php

$classes = array ("AT", "DB", "PM", "SC", "SR", "TT");

header("Content-Type: image/gif");
@readfile("./" . $classes[rand(0,5)] . ".gif") or die("File not found.");

?>

 

However, it is now appropriate to overlay some text on each gif. So I tried this:

 

<?php

$classes = array ("AT", "DB", "PM", "SC", "SR", "TT");

$string = "Random Picture";
$chosen = "./" . $classes[rand(0,5)] . ".gif";
$im = imagecreatefromgif($chosen);
$black = imagecolorallocate($im, 0, 0, 0);
imagestring($im, 1, 0, 0, $string, $black);
imagegif($im);
imagedestroy($im);

?>

• 
   
  But that's just giving me a text version of my GIF:
   
  

GIF87a<�d����������������������HHH&&&���,,,�.....

 
So my problems here are
 

• Problem displaying the image
  
• I don't even know if it's working to overlay on every frame of the animation, since it wont display

 

gausie

• 
  
• 
  

[Barand]

As far as I know, animated gifs aren't supported.

 

You could use css to overlay text over the image.

[gausie]

No, I'm making something that will be used on other people's websites :-(

[Barand]

I just tried with one of my animated gifs

 

It overlays the text but loses the animation

 

(you forgot the content-type header, btw)

 

<?php
$string = 'ABC';
$chosen = "connection.gif";
$im = imagecreatefromgif($chosen);
$black = imagecolorallocate($im, 0, 0, 0);
imagestring($im, 1, 0, 0, $string, $black);
header("content-type: image/gif");
imagegif($im);
imagedestroy($im);

?>

[gausie]

Hmm would there be a way to dissect the gif, apply the change to each frame, and then output it with all these frames together?

 

This, on the fly?

 

gausie

[Barand]

ImageMagick supports gif animation. Might be worth a look