I'm trying to use the "Allow PHP in Posts and Pages" plugin, but it only echos whatever I write in my post. I tried adding the following to my post:
echo "Hello World";
but that's exactly what I see as an output on the post (rather than just "hello world". I tried this code both in the visual editor and in HTML mode.
I also tried [php function=1] and added a the snippet:
echo "hellow world";
But it just echos '[php function=1]' in my post rather than 'hello world'.
What coule cause this weird problem?