Cannot use string offset as an array – Error

Hi, I’m getting the error: “Cannot use string offset as an array” for this code, if someone has a minute to take a look at this.

[CODE] $user_details = $facebook->api_client->users_getInfo($authData[“uid”], ‘first_name,last_name,pic_square,email’);
$data[‘first_name’] = $user_details[0][‘first_name’];
$data[‘last_name’] = $user_details[0][‘last_name’];
$data[‘pic’] = $user_details[0][‘pic_square’];
$data[’email’] = $user_details[0][’email’];
$data[‘uid’] = ‘FB_’.$user_details[0][‘uid’];

easyRegister($data[‘uid’],$data[‘first_name’],$data[‘last_name’],$data[’email’]);[/CODE]

Thank you

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