Hi agelonwl and thanks very much for your reply. I'm a newbie at PHP too, so I'm sorry about the level of the questions :|
I am guessing that I'd add this to the theme functions.php file and that it doesn't matter too much where I add it.
I'm guessing that the placeholder I'd put in my page/post is 'my_em_bookeddate_placeholders'?
I'm not sure, though, whether I'd put the subsequent
$replace = "<img src='..../2.png' />"; etc, eg
$replace = "<img src='..../1.png' />";
}
break;
elseif ($space ==2){
$replace = "<img src='..../2.png' />";
}
break
or after the
return $replace;
}
and I am ashamed to say that I'm not sure what the last line of code does and why it includes 1,3.
Thanks again for your time.