[Scanu]

Don't worry about "co-author" you do all the work i was just helping where i can
For your question
this code

PHP Code:

$find 'find';
$replace = 'replace';
$string = str_replace($find,$replace,$string); 


And this are same

PHP Code:

$string = str_replace('find','replace',$string); 


I hope you understand with this example codes because it's hard to explain with my english skills