Issue with RegEx contains pipe (|)

I am using some regex in my validation. Others are working well but this:

regex_match[/((?:https?:\/\/)?(?:www\.)?(?:\w\w\.)?example\.com\/)((([\w]{2,3})?)|([^\/]+\/(([\w|\d-&#?=])+\/?){1,}))$/]

Error is:
preg_match(): No ending delimiter '/' found
"/((?:https?:\\/\\/)?(?:www\\.)?(?:\\w\\w\\.)?linkedin\\.com\\/)((([\\w]{2,3})?)|([^\\/"

After searching about this issue just found that, there was an issue about it (1122) though it was solved.

"Who thinks in code"
Perfectly describes who I am
mbparvez.me

Try adding the the ending slash to it like so.

PHP Code:

|/ 


See if that will work.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Try adding the the ending slash to it like so.

PHP Code:

|/ 


See if that will work.

Adding

PHP Code:

|/ 


showing the following result:

Code:

preg_match(): Unknown modifier '('

"Who thinks in code"
Perfectly describes who I am
mbparvez.me