Question

I want to use preg_replace_callback to replace all instances of a custom tag with markup. For instance, I’m using this code to replace instances of “[tube]…[/tube]”:

preg_replace_callback('/\[tube\](.*)\[\/tube\]/', array('MyClass', 'mycallback'), $data);

The problem is it will not match this:

[tube]
http://www.somesite.com
[/tube]

How can I do this?

Note: Yes I am already familiar with the PECL bbcode extension, as well as the PEAR library. But I want to do this without them.

Answer 1

You will have to use pattern modifiers.

s (PCRE_DOTALL) If this modifier is
set, a dot metacharacter in the
pattern matches all characters,
including newlines. Without it,
newlines are excluded. This modifier
is equivalent to Perl’s /s modifier. A
negative class such as [^a] always
matches a newline character,
independent of the setting of this
modifier.

preg_replace_callback('/\[tube\](.*)\[\/tube\]/smU', array('MyClass', 'mycallback'), $data);

http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php