Trim the content of system()? - php

Question

I'm trying to print out all the users in active directory using system("dsquery user"); in php, my problem is getting it trimmed down so I have an array containing all the users and nothing else, atm this is my code:
<?php
$test = system("dsquery user");
$teste = explode('CN=', $test);
print_r($teste);
$user = trim($teste[1], ",");
echo "<br \>" . $user;
?>
I can only fetch one user atm because the explode deletes everything else..
Any help is appreciated, basically what I wan't to have in the end is something like this:
$user[0] = Administrator
$user[1] = kbgrt
$user[2] = asdasd
This is the output:
"CN=Administrator,CN=Users,DC=domain,DC=local" "CN=Guest,CN=Users,DC=domain,DC=local" "CN=krbtgt,CN=Users,DC=Domain,DC=local" "CN=doctor.scripto,CN=Users,DC=domain,DC=local" –
I hope you understand otherwise comment and I'll try to explain in another way.

Answer 1

Its not always easy to parse output from commands, if they are not designad for it. However a good start is to try to simplify it as much as possible and see patterns. However hope the code bellow will work for you I try to commented it as much as possible.
I have started with your output from system("dsquery user");
$test = '"CN=Administrator,CN=Users,DC=domain,DC=local" "CN=Guest,CN=Users,DC=domain,DC=local" "CN=krbtgt,CN=Users,DC=Domain,DC=local" "CN=doctor.scripto,CN=Users,DC=domain,DC=local"';
To make it easier I remove spaces and " from the string
$test = str_replace(' ', ',', $test);
$test = str_replace('"', '', $test);
Now we are ready to split the string on , so we get an array $teste that has elements that starts with LDIF values("DC=" or "CN=" in our case)
$teste = explode(',', $test);
Since some users are unwanted I add an array to exclude them. Also create an array $users to keep the result.
$users = array();
$exclude_users = array("Users", "doctor.scripto");
Then its just to iterate over array and split each element, so we get the LDIF part in position 0 and name in position 1. Add the name, if position 0 is equal to CN and name in position 1 is not in the list of excluded users.
foreach ($teste as $value) {
$data = explode('=', $value);
if($data[0] == 'CN' && !in_array($data[1], $exclude_users)) {
$users[] = $data[1];
}
}
print_r($users);
Here is the result:
Array
(
[0] => Administrator
[1] => Guest
[2] => krbtgt
)