[Resolved] preg_replace() problem

[micmac]

Hi all,
Can anyone lend some assistance in regards to the following preg_replace()?
If i pass the follwing string:

$knowledge_category_parent = "admin_knowledgebase.php?new_category=true&knowledge_category_id=5"

how do i get it to display everything after the "=", in this case 5 but it could be any value.
This is what i have so far but it stops after the "?".

$knowledge_category_parent = preg_replace('|admin_knowledgebase.php?new_category=true&knowledge_category_id=|i', '', $knowledge_category_parent);

Is there even a better way to do this?
Cheers,
micmac

[bubblenut]

preg_match('/=(.*)$/U',$knowledge_category_parent,$matches);
$knowledge_category_parent=$matches[1];

HTH
Bubble

[micmac]

Thanks for the reply bubblenut,

I should have clarified better, i meant the last "=". I only want it to display the "5" in the example string.

Any more ideas?

Cheers,
micmac

[bubblenut]

That's what the regex does. The $ matches the end of the string and the U modifies the regex to ungreedt, so the = before the .* will match the last = in the string.
HTH
Bubble

[micmac]

The result i get for $matches[1] is:

true&knowledge_category_id=5

I only only want the 5
I don't know much about regex, sorry if i am missing something.

Cheers,
micmac

[bubblenut]

Oh sorry, that's my mistake then. Try it without the U modifier. It may be that greedyness works differently from right to left.

[micmac]

No cigar just yet,

i tried it without the U modifier:

preg_match('/=(.*)$/',$knowledge_category_parent,$matches);

but still got

true&knowledge_category_id=5

[bubblenut]

Right, I'm clutching at straws now,
'/^.=(.?)$/' and do aprint_r($matches) after the regex
Bubble

[micmac]

Well you must have clutched the right straw...🙂
Works a treat!

Thanks for your time bubble.