Question

having another short regex problem.

Basically I have a string like such:

cn=WSG-AP-LO-COMMON-SITE-APPS,ou=ZFD,ou=SVC,ou=IGH

I’m trying to get just the WSG-AP-LO-COMMON-SITE-APPS from that string.

I’m trying something like this:

preg_match('/[cn=.]+.*[^,.*]+$/', $info[0]['groupmembership'][0], $matches);

print_r($matches);
Which returns:

Array
(
    [0] => cn=WSG-AP-LO-COMMON-SITE-APPS,ou=ZFD,ou=SVC,ou=IGH,ou=WM,ou=SWQ,o=HEALTH
)

Answer 1

As with any simply delimited string, this is most easily done by splitting on the delimiters: first commas, then on the =:

$parts = explode(",", "cn=WSG-AP-LO-COMMON-SITE-APPS,ou=ZFD,ou=SVC,ou=IGH");
$cn = $parts[0];
list($component, $value) = explode($cn);
echo $value;

And if you really will only want the first part, you can shorten it with another list():

list($cn) = explode(",", "cn=WSG-AP-LO-COMMON-SITE-APPS,ou=ZFD,ou=SVC,ou=IGH");
list($component, $value) = explode("=", $cn);
echo $value;

But if you really wish to do it with a regular expression, it should work as:

preg_match('/cn=([^,]+)/',  "cn=WSG-AP-LO-COMMON-SITE-APPS,ou=ZFD,ou=SVC,ou=IGH", $matches);
var_dump($matches);

array(2) {
  [0]=>
  string(29) "cn=WSG-AP-LO-COMMON-SITE-APPS"
  [1]=>
  string(26) "WSG-AP-LO-COMMON-SITE-APPS"
}

([^,]+) matches everything up to the next , following cn=.