How Make PHP as Plugin?

[Nuss]

i need to trasnform a PHP to Vb plugin

For example if i have

PHP Code:

<?
if(some condition){
echo 'hello world';
}else{
echo 'Good bye';
}
?>

(This is only example, my php is much more complicated)

So i need to trasform it to Plugin and call it in some Template with $my_php_plugin

How can do it??

Tanks in advance ppl!!

[Opserty]

PHP Code:

if(some condition)
{
    $var = 'hellow world';
}
else
{
    $var = 'Good Bye';
} 


Hook Location: global_start

Use [minicode]$var[/minicode] in a template for example the header template.

Calling custom templates:

PHP Code:

eval('$var = "'. fetch_template('sometemplate') .'";');