Preg match question - php

Question

I'm sure someone already asked this question, but after searching for more than 1 hour on google, I decided to ask my question here.
I want to itterate over an array excisting of different strings/texts.
These texts contain strings with both ##valuetoreplace## and #valuetoreplace#
I want to make to preg_matches:
$pattern = '/^#{1}+(\w+)+#{1}$/';
if(preg_match($pattern, $value, $matches, PREG_OFFSET_CAPTURE))
{
// do something with the #values#
}
AND
$pattern = '/^#{2}+(\w+)+#{2}$/';
if(preg_match($pattern, $value, $matches, PREG_OFFSET_CAPTURE))
{
//do something with the ##value##
}
This works great.
Now my only problem is as follows:
When i have a string like
$valueToMatch = 'proceding text #value#';
My preg_match cant find my value anymore (as i used a ^ and a $).
Question: how can i find the #value# and the ##value##, without having to worry if these words are in the middle of a (multi-line) value?
*In addition:
What i want is to find patterns and replace the #value# with a db value and a ##value## with a array value.
For example:
$thingsToReplace = 'Hello #firstname# #lastname#,
How nice you joined ##namewebsite##.';
should be
'Hello John Doe,
How nice you joined example.com.'

Answer 1

Try this: /##([^#]+)##/ and /#([^#]+)#/, in that order.

Answer 2

Maybe nice to know for other visitors how i did it:
foreach($personalizeThis as $key => $value)
{
//Replace ##values##
$patternIniData = '/#{2}+(\w+)#{2}/';
$return = 'website'; //testdata
$replacedIniData[$key] = preg_replace($patternIniData, $return, $value);
//Replace #values#
$pattern = '/#{1}+(\w+)#{1}/';
$return = 'ASD'; //testdata
$replacedDbData[$key] = preg_replace($pattern, $return, $replacedIniData[$key]);
}
return $replacedDbData;