Replacement variable in plugin?
 

I have found a cool little mini script, and have got it running by uploading a file to server and creating a variable replacement but I would like to turn it into a plugin,

I know how to call a template so the file upload is no longer needed but I wish to know (if its possible) how to code/call a Replacement variable within a plugin so all thats needed is to import the plugin.xml file and your done....

I want to change:
to
Thank you in advance :)

Bump :)

I cant just use alt=" as a hook as my code need to go behind

Yeah you can. If you use str_replace, it will replace the instance of alt. So, if you put the word to replace is "alt=" and the word to replace it with is "mycode=whatever alt=" then it should be how you want it.

Mmmm ok that make sense so how do I call it for all templates?
I currently only know how for 1 template