Как вернуть данные с помощью вызова cURL

Это возвращает токен, например: {«token»: «260e5b8adf74af6be5dfa250c5ad93c8»}

И я просто хочу получить контентную часть: 260e … Как мне кажется, я могу получить ее, используя $ getInfo [‘token’], верно?

$user="admin";
$password="Moodle15!";
$services="moodle_mobile_app";

$url = "https://localhost/moodle/login/token.php?username=".$user."&password=".$password."&service=".$services."";

$ch = curl_init($url);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURL_RETURNTRANSFER, true);

$getURL = curl_exec($ch);

$getInfo = json_decode($getURL, true);

$displayToken = $getInfo['token'];
echo $displayToken;

curl_close($ch);

И я не знаю, что происходит с CURL_RETURNTRANSFER.

И ошибка:

Notice: Use of undefined constant CURL_RETURNTRANSFER - assumed 'CURL_RETURNTRANSFER' in C:\xampp\htdocs\moodle\cURL_script.php on line 12

Warning: curl_setopt() expects parameter 2 to be long, string given in C:\xampp\htdocs\moodle\cURL_script.php on line 12
{"token":"260e5b8adf74af6be5dfa250c5ad93c8"}

Редакция:

И если бы я имел:

{"id":4,"username":"Jhon","firstname":"smith","lastname":"Reches","fullname":"Jhon smith","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/25\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/25\/user\/icon\/f1","groups":[],"roles":[{"roleid":5,"name":"","shortname":"student","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"},{"id":2,"fullname":"Grup de Recerca","shortname":"Grp. Recerca"}]}

Как я могу получить доступ к «имени пользователя»? или «полное имя», когда вы знаете, что в нем много «полного имени»?

EDITED2:

Новый код у меня сейчас:

$token = "260e5b8adf74af6be5dfa250c5ad93c8";
$funcion="core_enrol_get_enrolled_users";
$courseid="3";
$format="json";
$url= "https://localhost/moodle/webservice/rest/server.php?wstoken=".$token."&wsfunction=".$funcion."&courseid=".$courseid."&moodlewsrestformat=".$format."";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$getURL = curl_exec($ch);
$getInfo = json_decode($getURL, true);
$email = $getInfo[2]['email'];
echo $email."</br>";
curl_close($ch);

Теперь $ email содержит [email protected], но у меня много результатов. Как мне отобразить их все с помощью foreach? Потому что это многомерный массив. Увидеть ниже.

[{"id":4,"username":"jhon1.smith1","firstname":"Jhon1","lastname":"Smith1","fullname":"jhon1 smith1","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/25\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/25\/user\/icon\/f1","groups":[],"roles":[{"roleid":5,"name":"","shortname":"student","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"},{"id":2,"fullname":"Grup de Recerca","shortname":"Grp. Recerca"}]},{"id":5,"username":"jhon1.smith1","firstname":"Josep","lastname":"jhon1 ","fullname":"jhon1 smith1","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/26\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/26\/user\/icon\/f1","groups":[],"roles":[{"roleid":5,"name":"","shortname":"student","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"},{"id":2,"fullname":"Grup de Recerca","shortname":"Grp. Recerca"}]},{"id":6,"username":"jhon1.smith1","firstname":"jhon1","lastname":"smith1","fullname":"jhon1 smith1","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/32\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/32\/user\/icon\/f1","groups":[],"roles":[{"roleid":1,"name":"","shortname":"manager","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"},{"id":2,"fullname":"Grup de Recerca","shortname":"Grp. Recerca"}]},{"id":7,"username":"jhon1.jhon1","firstname":"jhon1","lastname":"jhon1","fullname":"jhon1 smith1","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/35\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/35\/user\/icon\/f1","groups":[],"roles":[{"roleid":5,"name":"","shortname":"student","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"}]},{"id":8,"username":"jhon1.smith1","firstname":"jhon","lastname":"smith1","fullname":"jhon1 smith1","email":"[email protected]","department":"","firstaccess":0,"lastaccess":0,"description":"","descriptionformat":1,"profileimageurlsmall":"http:\/\/localhost\/moodle\/pluginfile.php\/41\/user\/icon\/f2","profileimageurl":"http:\/\/localhost\/moodle\/pluginfile.php\/41\/user\/icon\/f1","groups":[],"roles":[{"roleid":3,"name":"","shortname":"editingteacher","sortorder":0}],"enrolledcourses":[{"id":3,"fullname":"Game Design","shortname":"Game Design"}]}]

и я желаю:

[email protected]
[email protected]
foo2@..